Abstract: A switch arrangement comprises a plurality of MEMS switches arranged on a substrate about a central point, each MEMS switch being disposed on a common imaginary circle centered on the central point. Additionally, and each MEMS switch is preferably spaced equidistantly along the circumference of the imaginary circle. Connections are provided for connecting a RF port of each one of the MEMS switches with the central point.

Abstract: A 1-by-N switch matrix (10) includes at least two ranks of switches (12-1, 12-2-1, 12-2-2, 12-3-1, . . . , 12-3-4, 12-4-1, . . . , 12-4-8, and 12-5-1, . . . , 12-5-16; 112-1, 112-2-1, 112-2-2, 112-3-1, . . . , 112-3-4, 112-4-1, . . . , 112-4-8, and 112-5-1, . . . , 112-5-8). Each switch has first, second and third terminals (1, 2, 3). A first state of each switch couples the first terminal (1) to the second terminal (2) and a second state of each switch couples the first terminal (1) to the third terminal (3). The second (2) and third (3) terminals of each switch (12-1, 12-2-1, 12-2-2, 12-3-1, . . . 1., 2-3-4; 112-1, 112-2-1, 112-3-3 and 112-3-4) of each rank (-1-, -2-, -3-) above the next to lowest rank (-4- or -3-) are coupled to first terminals (1) of respective switches (12-4-1, . . . , 12-4-8 and 112-3-1, 112-3-2, 112-4-5, 112-4-8) in the next lower rank (-2-, -3-, -4-). The second (2) and third (3) terminals of each switch (12-4-1, 12-4-8 and 112-3-1, 112-3-2, 112-4-5,. . .

Abstract: A micromachine switch for use in a millimeter wave circuit and a microwave circuit is simpler in structure than conventional micromachine switches. The micromachine switch has first and second high-frequency signal lines (1b, 1a), cantilever (11) fixed to an end of the first high-frequency signal line (1b) and extending to a position above second high-frequency signal line (1a), first insulating means (15) disposed on second high-frequency signal line (1a), second insulating means (14) disposed in an area where cantilever (11) and second high-frequency signal line (1a) confront each other, and first control signal line (2) connected between an end of second high-frequency signal line (1a) and first insulating means (15), for applying a control signal.

Abstract: A microelectro-mechanical device which includes a fixed electrode formed on a substrate, the fixed electrode including a transparent, high resistance layer, and a moveable electrode formed with an anisotropic stress in a predetermined direction and disposed adjacent the fixed electrode. The device includes first and second electrically conductive regions which are isolated from one another by the fixed electrode. The moveable electrode moves to cover the fixed electrode and to electrically couple to the second conductive region, thus electrically coupling the first and second conductive regions, in response to a potential being applied across the fixed and moveable electrodes. The fixed electrode is transparent to electromagnetic signals or waves and the moveable electrode impedes or allows transmission of electromagnetic signals or waves.

Abstract: A micro electromechanical system (MEMS) transfer switch for simultaneously connecting two radio frequency (RF) input transmission lines among two RF output transmission lines. The MEMS transfer switch includes a plurality of series MEMS switching units operatively arranged with the input and output transmission lines to selectively connect a first input to a first output and a second input to a second output, or the second input to the first output and the first input to the second output.

Abstract: A micro-electro-mechanical switch includes a transmission line having a gap disposed along it. The switch also includes at least one ground plane located proximal to the transmission line. A first bridge is configured to close the gap along the transmission line, and a second bridge is configured to connect the transmission line to the ground plane. A method of manufacturing a micro-electro-mechanical switch includes forming, on a first substrate, a transmission line and at least one ground plane, wherein the transmission line includes a gap along it. The method also includes forming, on a second substrate, a first bridge configured to close the gap disposed along the transmission line, and a second bridge configured to connect the transmission line to the ground plane. Then transferring the first and second bridges to the first substrate.

Abstract: Miniature double-throw electromagnetic microwave switches are disclosed in this invention. In one embodiment a switch comprising an input transmission line, a first movable cantilever with a first permanent magnetic film and connecting to a first output transmission line, a second movable cantilever with a second permanent magnetic film and connecting to a second output transmission line is provided. In another embodiment, a latching function is provided to a miniature double-throw electromagnetic microwave switch by adding a permanent magnetic film to said input transmission line. In yet another embodiment, a third non-movable cantilever with a permanent magnetic film on top is added to said miniature double-throw microwave latching switch to enhance the latching mechanism.

Abstract: A switch assembly has a housing and a plurality of controllable switches. The housing has a plurality of input ports and an output port and the plurality of individually controllable switches is arranged within the housing. Each switch has an open position and a closed position and is coupled to one of a plurality of input ports of the housing and a common summing junction within the housing. Each input port receives a coherent radio frequency (RF) signal. The output port is coupled to the common summing junction and outputs a sum signal that includes at least one of the RF signals received at the common summing junction when a switch is in the closed position. The switch assembly may further include impedance matching lines that transform a reference impedance value to a higher value prior to switching and an impedance transformation line that provides for the reference impedance value at a distal end of the impedance transformation line.

Abstract: An RF power combiner. A plurality of RF inputs connect to a power combiner switch assembly. RF switches connect each input to a common node. A single stub matching circuit connects between the common node and an output node such that an open-ended transmission line stub extends from the output node. An RF output connector feeds an RF output connection from the output node. The stub of the L-match circuit has fixed length or variable length configurations. As a consequence, the impedances at the common and output nodes are more closely matched.

Abstract: A MEM relay device includes a flexible multi-point contact system with a self-aligning structure. The inventive relay includes a first signal contact electrically connected to a first set of flexible electrically conductive signal teeth and a second signal contact electrically connected to a second set of flexible electrically conductive signal teeth. An actuator, selectively moves a shorting contact between an open and closed position. In the closed position, two sets of flexible electrically conductive shorting teeth mesh with a first set of flexible electrically conductive signal teeth and the second set of flexible electrically conductive signal teeth creating a conductive path between the two signal contacts. The contact structure facilitates fabrication using a deep reactive ion etch (DRIE) process and brings signal and actuator contacts to an edge of each die.

Abstract: A microstrip single pole double throw switch incorporating multiple MEMS contacts. A first pair of contacts is located adjacent to the junction of input and output lines for optimization of performance bandwidth. The MEMS contacts that are not located adjacent to the junction are spaced along the output lines to further optimize the bandwidth and isolation in the off state, while minimizing insertion loss in the on state.

Abstract: Method and apparatus for providing uninterrupted, attenuated RF signal and AC power to downstream multiple port taps, while an upstream multiple port tap is being serviced. A multiple port tap includes a tap housing, an assembly for receiving a main signal from an upstream element and an assembly for outputting the main signal to a downstream element. The tap also includes circuitry that couples the signal receiving assembly to the signal outputting assembly. The tap circuitry used in the tap includes a signal attenuator for maintaining a level predetermined RF signal and AC power level across the tap. A housing cover plate is positioned on the housing for covering the main opening to the housing. The cover plate includes at least one subscriber connection port operatively coupled to the circuitry for delivering a signal to a subscriber. The tap further includes a signal and power bypass having a variable attenuator for coupling to the signal receiving means and signal outputting means.

Abstract: A micro-electrical-mechanical system (MEMS) switch. The switch includes a compliant spring that supports a contact shuttle for movement in a lateral direction generally parallel to the substrate and biases the contact shuttle to a normally open switch state position. A plurality of moving electrodes are coupled to the contact shuttle. A plurality of fixed electrodes are interleaved with the moving electrodes. The moving electrodes and the fixed electrodes have generally planar major surfaces perpendicular to the plane of the substrate. Electrostatic forces developed between the fixed and moving electrodes cause the contact shuttle to move to a closed switch state position in response to the application of an actuation voltage. The moving direction of the moving electrodes and the contact shuttle is along a longitudinal axis parallel to the substrate and perpendicular to the planar major surfaces of the electrodes.

Abstract: A microelectromechanical (MEMS) switch is described. The switch comprises a cantilever beam having a proximal end and a distal end. The cantilever beam is supported by its proximal end above a substrate by a raised anchor. An intermediate actuation electrode is placed beneath the cantilever beam and is separated from the bottom of the cantilever beam by a narrow gap. Finally, a contact pad or transmission line is placed beneath the cantilever beam and separated from the bottom of the cantilever beam by a larger gap.

Abstract: Miniature double-throw electromagnetic microwave switches are disclosed in this invention. In one embodiment a switch comprising an input transmission line, a first movable cantilever with a first permanent magnetic film and connecting to a first output transmission line, a second movable cantilever with a second permanent magnetic film and connecting to a second output transmission line is provided. In another embodiment, a latching function is provided to a miniature double-throw electromagnetic microwave switch by adding a permanent magnetic film to said input transmission line. In yet another embodiment, a third non-movable cantilever with a permanent magnetic film on top is added to said miniature double-throw microwave latching switch to enhance the latching mechanism.

Abstract: A microelectromechanical (MEMS) switch is described. The switch comprises a cantilever beam having a proximal end and a distal end. The cantilever beam is supported by its proximal end above a substrate by a raised anchor. An intermediate actuation electrode is placed beneath the cantilever beam and is separated from the bottom of the cantilever beam by a narrow gap. Finally, a contact pad or transmission line is placed beneath the cantilever beam and separated from the bottom of the cantilever beam by a larger gap.

Abstract: A micro-mechanical actuator is disclosed for actuating an object in a micro-electro-mechanical system. One end of the object is flexibly connected a substrate, and another end is flexibly connected to an auxiliary lever which is further connected to an actuating force generator. The auxiliary lever receives an actuating force generated from the actuating force generator to perform a levering operation about a fulcrum. The position of the fulcrum allows an portion of the auxiliary lever connected to the object has a shift larger than a shift of another portion of the auxiliary lever connected to the actuating force generator in response to the actuating force.

Abstract: A method and apparatus are disclosed for isolating a selected switching connection, within a switch matrix. The switching connection is isolated by forming two shunt stubs, or equivalent lumped circuits, each having an electrical length such that the input impedance of the shunt stub is high. The shunt stubs are formed on the appropriate input and output signal lines of the switch matrix on the side distant from the side of the input and output lines preferred for the propagation of the signal. The switch matrix may be constructed within and on a glass substrate.

Abstract: A micro electromechanical switch has a guidepost formed upon a substrate. A signal transmission line is formed on the substrate, with the signal transmission line having a gap and forming an open circuit. The switch further includes a switch body having a via opening formed therein, with the switch body being movably disposed along an length defined by the guide post. The guidepost is partially surrounded by the via opening.

Abstract: A micro-machine switch which causes a contact electrode to make contact with or separate away from a signal line formed on a substrate, to thereby turn on or off the signal line, includes (a) first to N-th lower electrodes formed on the substrate, wherein N is an integer equal to or greater than 2, (b) first to N-th upper electrodes supported facing the first to N-th lower electrodes, respectively, and (c) an electrode supporter for vertically raising and lowering the first to N-th upper electrodes between a first position where the contact electrode makes contact with the signal line when electrostatic force is generated between the first to N-th upper electrodes and the first to N-th lower electrodes, respectively, and a second position where the contact electrode is separated away from the signal line when the electrostatic force is not generated.

Abstract: A micro-mechanical microwave switch has a signal line formed on a substrate and defining a gap forming an open circuit in the off-state of the switch. A dielectric support, which may be a cantilevered arm, carries a contact to bridge the gap and close the switch in the on-state. At least one shield electrode in the vicinity of the contact creates reduces the coupling across the gap by creating a shunt capacitance or redistributing the electromagnetic field.

Abstract: A microelectromechanical system (MEMS) switch assembly (10) and a method of forming the MEMBS switch assembly (10) is provided that includes a switching member (12) having a first portion (34) that is at least partially formed with a first material having a first dielectric constant and a second portion (36) that is at least partially formed with a second material having a second dielectric constant. Furthermore, the switching member (12) further includes a first lead (14) spaced apart from a second lead (16) for contacting the switching member (12). In operation, the switching member (12) is configured for movement such that the first portion (34) and second portion (36) of the switching member (12) can provide variable electrical connections between the first lead (14) and second lead (16).

Abstract: A microelectromechanical system (MEMS) switch assembly (10) and a method of forming the MEMBS switch assembly (10) is provided that includes a switching member (12) having a first portion (34) that is at least partially formed with a first material having a first dielectric constant and a second portion (36) that is at least partially formed with a second material having a second dielectric constant. Furthermore, the switching member (12) further includes a first lead (14) spaced apart from a second lead (16) for contacting the switching member (12). In operation, the switching member (12) is configured for movement such that the first portion (34) and second portion (36) of the switching member (12) can provide variable electrical connections between the first lead (14) and second lead (16).

Abstract: A switch includes at least two distributed constant lines (2a, 2b) disposed close to each other, a movable element (11) arranged above the distributed constant lines so as to oppose these distributed constant lines and connecting the distributed constant lines to each other in a high-frequency manner upon contacting the distributed constant lines, and a driving means (13) for displacing the movable element by an electrostatic force to bring the movable element into contact with the distributed constant lines. The movable element has a projection (52a, 52b) formed by notching at least one end of an edge of the movable element which is located on at least one distributed constant line side. In this projection, a width (a) serving as a length in a direction parallel to the widthwise direction of the distributed constant lines is smaller than a width (W) of each of the distributed constant lines.

Abstract: A radio frequency (RF) microelectromechanical systems (MEMS) switch is manufactured by independent processing and subsequent bonding together of a MEMS substrate in alignment with an RF substrate. The RF MEMS switch is designed so as to encapsulate a flexing diaphragm supporting a switch electrode used with electrostatic flexing potentials to move electrodes of the MEMS substrate up and down over an RF transmission line structure of the RF substrate. The bonded combined MEMS switch structure is used to create an encapsulated RF MEMS switch suitable for direct coupling, AC coupling, and direct modulation of RF signals. The resulting MEMS RF switch device provides a reliable, minimally distorting RF transmission line geometry, free of contamination for use in high speed RF signal switching applications well suited for advance communication RF switching requirements.

Abstract: A microelectronic mechanical systems (MEMS) switch includes a vane formed over a substrate for electrically coupling an input line to an output line formed on the substrate. The vane includes flexible hinges, which support the vane from the input line and allow the vane to rotate about a pivot axis. The substrate includes pull-down and pull-back electrodes to actuate the MEMS switch. The pull-back electrode allows the present invention to overcome stiction effects.

Abstract: A micro electromechanical switch has a guidepost formed upon a substrate. A signal transmission line is formed on the substrate, with the signal transmission line having a gap and forming an open circuit. The switch further includes a switch body having a via opening formed therein, with the switch body being movably disposed along an length defined by the guide post. The guidepost is partially surrounded by the via opening.

Abstract: In a mobile telephone apparatus corresponding to dual-band provided with an RF power module to operate in two kinds of different frequencies, a common harmonics control circuit is provided to the output circuit of such RF power module to realize higher efficiency in view of controlling respective harmonics power for both band frequencies. Moreover, a means for selectively setting the bias is also provided so that the maximum efficiency can be attained depending on the output power required with respective communication systems with the bias control signal output from the CPU of the control unit interlocking with selection of frequency of the mobile telephone apparatus body.

Abstract: A microelectro-mechanical device which includes a fixed electrode formed on a substrate, the fixed electrode including a transparent, high resistance layer, and a moveable electrode formed with an anisotropic stress in a predetermined direction and disposed adjacent the fixed electrode. The device includes first and second electrically conductive regions which are isolated from one another by the fixed electrode. The moveable electrode moves to cover the fixed electrode and to electrically couple to the second conductive region, thus electrically coupling the first and second conductive regions, in response to a potential being applied across the fixed and moveable electrodes. The fixed electrode is transparent to electromagnetic signals or waves and the moveable electrode impedes or allows transmission of electromagnetic signals or waves.

Abstract: A switch assembly has a housing and a plurality of controllable switches. The housing has a plurality of input ports and an output port and the plurality of individually controllable switches is arranged within the housing. Each switch has an open position and a closed position and is coupled to one of a plurality of input ports of the housing and a common summing junction within the housing. Each input port receives a coherent radio frequency (RF) signal. The output port is coupled to the common summing junction and outputs a sum signal that includes at least one of the RF signals received at the common summing junction when a switch is in the closed position. The switch assembly may further include impedance matching lines that transform a reference impedance value to a higher value prior to switching and an impedance transformation line that provides for the reference impedance value at a distal end of the impedance transformation line.

Abstract: A Micro-Electromechanical System (MEMS) switch (100) having a single, center hinge (120) which supports a membrane-type electrode (104) on a substrate (101). The single, center hinge (120) has a control electrode (104) coupled to the substrate (101) by an anchor (113), a hinge collar (121), a set of hinge arms (122, 123). The control electrode (104) has a shorting bar (106) coupled thereto and is electrically isolated from another control electrode (105), which is formed on the substrate (101). A travel stop (130) is positioned between the substrate and the control electrode (104). Another aspect of the present invention is a Single Pole, Double Throw (SPDT) switch (160) into which is incorporated the single, center hinge (170) and the travel stop (185, 186).

Abstract: A micro-machine switch which causes a contact electrode to make contact with or separate away from a signal line formed on a substrate, to thereby turn on or off the signal line, includes (a) first to N-th lower electrodes formed on the substrate, wherein N is an integer equal to or greater than 2, (b) first to N-th upper electrodes supported facing the first to N-th lower electrodes, respectively, and (c) an electrode supporter for vertically raising and lowering the first to N-th upper electrodes between a first position where the contact electrode makes contact with the signal line when electrostatic force is generated between the first to N-th upper electrodes and the first to N-th lower electrodes, respectively, and a second position where the contact electrode is separated away from the signal line when the electrostatic force is not generated.

Abstract: A three dimensional microwave switch having a plurality of waveguide transmission lines configured in an octahedral shape having microwave I/O ports at the corners. Individual actuators selectively move respective reeds within the waveguide transmission lines between a signal-attenuating position abutting the interior surface of the waveguide transmission line and a signal-conducting position substantially coaxial with the waveguide transmission line and abutting the signal lines of the I/O microwave ports couple to opposite ends of the waveguide transmission line.

Abstract: A multipole, multiposition switching relay is provided. The switching relay includes an electromagnetic drive coil having a spring-biased plunger slidably mounted therein. The plunger is operably connected to a switching apparatus for connecting and disconnecting terminals of coaxial connectors. The drive coil pulls the plunger into its hollow center when an electric current is applied to the drive coil. A magnet located near the drive coil creates a magnetic field which maintains the plunger in the drive coil after the electric current has been disconnected from the drive coil, and the switching relay will remain in the chosen state. A second drive coil may be provided which shunts, or reverses, the magnetic field, allowing the plunger to return to its original position due to the biasing force provided by the spring. Energizing the second drive coil automatically resets any previously selected position of the first drive coil to its original position.

Abstract: A microelectro-mechanical device which includes a fixed electrode formed on a substrate, the fixed electrode including a transparent, high resistance layer, and a moveable electrode formed with an anisotropic stress in a predetermined direction and disposed adjacent the fixed electrode. The device includes first and second electrically conductive regions which are isolated from one another by the fixed electrode. The moveable electrode moves to cover the fixed electrode and to electrically couple to the second conductive region, thus electrically coupling the first and second conductive regions, in response to a potential being applied across the fixed and moveable electrodes. The fixed electrode is transparent to electromagnetic signals or waves and the moveable electrode impedes or allows transmission of electromagnetic signals or waves.

Abstract: The present invention relates to a switch with a rocker, which has an affixed magnet, capable of being reliably opened or closed by a mechanical operation of a magnetized rocker. The present invention comprises of a supporting plate and a plurality of electromagnets occurring a magnetic force when a power is supplied thereto and being disposed in a bottom surface of the supporting plate. Further, the present invention has a rocker made of a magnetic substance, magnetized in order to occur repulsion with the electromagnet and then rotated by a predetermined angle. Furthermore, the present invention at least one magnet for magnetizing the rocker and retaining an inclined state of the rocker by the if occurred attraction with the electromagnet, and being disposed on the rocker.

Abstract: An RF switch formed as a micro electro-mechanical switch (MEMS) which can be configured in an array forming a micro electro-mechanical switch array (MEMSA). The MEMS is formed on a substrate. A pin, pivotally carried by the substrate defines a pivot point. A rigid beam or transmission line is generally centrally disposed on the pin forming a teeter-totter configuration. The use of a rigid beam and the configuration eliminates the torsional and bending forces of the beam which can reduce reliability. The switch is adapted to be monolithically integrated with other monolithic microwave integrated circuits (MMIC) for example from HBTs and HEMTs, by separating such MMICs from the switch by way of a suitable polymer layer, such as polyimide, enabling the switch to be monolithically integrated with other circuitry. In order to reduce insertion losses, the beam is formed from all metal, which improves the sensitivity of the switch and also allows the switch to be used in RF switching applications.

Abstract: A microwave switch includes a housing having at least three spaced coaxial conductor terminals extending from the housing; an electrical conductor extends inwardly from each of the terminals to a housing interior; and a housing cover effectively seals the housing and includes a pair of bearing apertures. A pair of switch operators, each having a headed top confines return springs between an underside of the headed top and a top surface of the cover, a central guide portion passes through said bearing apertures and a distal end protrudes from an underside surface of the cover into the housing interior toward the electrical conductors. A switch reed is fixedly attached to the distal end of each of the operators within said housing, each switch reed including reed distal ends which electrically interconnect, upon alternative operation of said operators by a rocker assembly, a pair of the electrical conductors including a common electrical conductor.

Abstract: A microwave switch comprising a connection assembly which has multiple positions and a drive assembly which places the connection assembly into a selected one of the positions at a time. The microwave switch may, for example, be a microwave T-switch or another type of microwave switch. The drive assembly includes an actuator plate which is mechanically coupled to reeds of the connection assembly and places the connection assembly into the selected position. During operation of the switch, a magnetic force of the permanent magnet is substantially the only holding force that holds the actuator plate in place in at least one direction. In another aspect, the drive assembly further comprises multiple movable links which mechanically couple arms of the actuator plate to various reeds. Each movable link comprises first and second generally flat members. Within each respective one of the movable links, the first member and second members are spaced by different amounts from the actuator plate.

Abstract: Switching means of a satellite has a first set of switches for receiving respective channel slots of de-multiplexed narrow band channels. The set of switches may be made up of four position switches 5.sup.1, 5.sup.2 etc. Switch 5.sup.2 may be connected straight through, or to the straight through positions of switches 5.sup.1 and or 5.sup.3 via interswitch connections. The same is possible with the second set of switches 6. A wide selection of the possible frequency slots is possible (for example eight out of sixteen) to allow routing among the amplifiers 9, 10, some of which are designated as redundant.

Abstract: Methods for the fabrication of miniature electromagnetic microwave switches are disclosed in this invention. In one embodiment, on a dielectric substrate, miniature electromagnetic switches for coplanar waveguide transmission lines are fabricated. In another embodiment, miniature electromagnetic microwave switches are fabricated for microstrip transmission lines. The miniature microwave switches are built on a dielectric substrate and are accompanied by miniature electromagnetic coils on the back of the substrate. The switch is controlled by regulating the dc current applied to the electromagnetic coil. A switch is ON when a dc controlling current is applied to the electromagnetic coil and is OFF when the controlling current is cut off. A reverse dc current may also be applied to the electromagnetic coil to repel the top electrode from the bottom electrode. The use of reverse current will prevent the possible sticking of the two electrodes, thus, reducing the switching time.

Abstract: A coaxial "M" switch having three coaxial input connectors (A, B, C) spaced evenly from each other, and three coaxial output connectors (1, 2, 3) identically arranged. In a cylindrical barrel embodiment (10) the input and output connectors are located at opposite ends of a cylindrical configuration. In one planar embodiment (30), the input and output connectors alternate with each other and define a hexagonal configuration (40). In another planar embodiment, the input connectors (A, B, C) define an inner triangular configuration (70) that is surrounded by the output connectors (1, 2, 3) defining an outer triangular configuration. In each embodiment, reeds are actuated in predetermined configurations to define three switch positions.

Abstract: A switching coaxial jack includes first and second parallel aligned electrically conductive coaxial center conductors. The center conductors are divided into front and rear portions. The rear portions include movable springs to separate the rear portions from the front portions. A V-shaped switching spring connects the rear portions. Levers push the rear portions out of connection with the switching spring and into connection with the front portions upon insertion of plugs into forward ports of the jack.

Abstract: An improved Wilkinson-type power divider/combiner possessing switching capabilities for selectively controlling operative modes of its constituent dividing/combining channels is disclosed. The switchable power divider/combiner includes N first switches connecting N input/output transmission lines to a common junction and N second switches connecting N isolation resistors coupled to the N input/output transmission lines to a common node. The operating mode of the power divider/combiner can be controlled by activating each pair of the first and second switches to a closed or open switch position. The impedance values of the dividing/combining channel transmission lines are adjusted to provide the optimal impedance matching in both N-way and (N-1)-way operating modes. The resulting switchable power divider/combiner is capable of providing efficient power combining and distribution in a low-loss, phase-balanced manner in both N-way and (N-1)-1 way modes.

Abstract: A multi-tap device for tapping a main TV or rf signal to deliver attenuated signals to individual TV receivers includes a pair of socket assemblies for receiving input and output pins of a plug-in tap plate or printed circuit board carrying necessary attenuation/tap off circuitry. The socket assemblies connect the input pin to a main input cable for receiving the main rf signal and ac power, and connect the output pin to a main output cable or continuation of the main cable, for distributing the main rf signal(s) and ac power to cascaded down line multi-tap devices. A shunt printed circuit board is mounted between the socket assemblies, and has an rf/ac conductive strip for connection at either end to switches built into each socket assembly.

Abstract: A multipole multiposition microwave switch system 101 with a common redundancy is directed to a new and innovative RF switch that enables the integration of a plurality of high-power RF transmission line switches into one mechanical assembly while giving the system an ability to provide a redundant operation for each of the high-power RF transmission line switches. The invention combines the connectibility of, more particularly, three or more single-pole-double-throw ?SPDT! switches and one single-pole-multiple-throw ?SPMT! switch to form a single unit of multiple-pole-(multiple plus one)-throw ?(N)P(N+1)T! multipole multiposition microwave switch system 101 with a common redundancy. The multipole multiposition microwave switch system 101 achieves the great number of redundancy by having each of the switching mechanisms, along with its input and output RF connectors, parallelly, radially, and commonly connected to the redundant RF connector 123.

Abstract: An electromagnetic relay, such as an electromechanical RF switch, which is operated by an electromagnetic coil, is provided with an indicating circuit which responds to the position of the electromagnetic armature as well as the application of driving current to the coil. A magnetically activated reed switch is mounted adjacent to the electromagnetic coil at a distance selected so that the magnetic field of the coil will operate the reed switch when current is applied to the coil and the armature is driven into a position closing a magnetic circle.

Abstract: A multi-tap device for tapping a main TV or rf signal to deliver attenuated signals to individual TV receivers includes a pair of socket assemblies for receiving input and output pins of a plug-in tap plate or printed circuit board carrying necessary attenuation/tap off circuitry. The socket assemblies connect the input pin to a main input cable for receiving the main rf signal and ac power, and connect the output pin to a main output cable or continuation of the main cable, for distributing the main rf signal(s) and ac power to cascaded down line multi-tap devices. A shunt printed circuit board is mounted between the socket assemblies, and has an rf/ac conductive strip for connection at either end to switches built into each socket assembly.

Abstract: A radio frequency (RF) switch accessory (100) for use with a two-way radio (101) includes an input port (203), antenna port (215) for connection to an antenna and a remote port (213). The RF switch accessory (205) is used to control an electro-mechanical relay (207) for electrically connecting the input port (203) either between the antenna port (215) for connection to the radio antenna or the remote port (213). The invention allows for RF energy produced by the radio (101) to be easily switched to the remote port (213) without disconnecting an antenna from the radio.

Abstract: A double pole, double throw electromechanical RF switch is configured to enable the same switch mechanical arrangement to accommodate various applications, including make-before-break or break-before-make switch operations and latching or fail-safe switching. By simple interchange of the two armatures provided, the operation of the same mechanical switch can be changed.