Abstract: A line-replaceable unit for a phased array antenna including a thermally conductive housing having a front face and an opposed rear face, at least one open-ended waveguide extending through the housing from the front face to the rear face, at least one first radiating element including the waveguide and adapted to emit energy in a first frequency band; and at least one second radiating element positioned on the front face of the housing and adapted to emit energy in a second frequency band distinct from the first frequency band. The waveguide is dimensioned to pass energy in the first frequency band and is exposed to the environment outside the housing at the front and rear faces to define a cooling duct passing through the housing.

Abstract: The present invention relates to a portable radiotelephone with an antenna unit outwardly protruded therefrom. In the portable radiotelephone, the antenna unit is connected, via a feeding unit, to a main body of the radiotelephone and has a camera lens assembly installed in a proper position thereof to the main body so as to suitably photograph a subject. Accordingly, an additional area for an installation of the lens assembly in the radiotelephone is not required, and miniaturization and reduction in weight of the radiotelephone can be achieved. In addition, since the lens assembly is installed in the most protruded portion of the radiotelephone, it is possible to suitably photograph a subject.

Abstract: There is disclosed a wristband for a portable electronic instrument including at least a first wristband strand (50) including outer and inner faces and one end (50A) of which is intended to be fixed to a case of a portable electronic instrument, this first wristband strand (50) including, housed between said outer and inner faces, an electric conductor including a conductive plate (10) of elongated shape arranged longitudinally in said first wristband strand (50). The conductive plate (10) includes a plurality of electric contact zones (30) with the conductive plate (10) distributed longitudinally over the first wristband strand, the first wristband strand (50) being arranged to be cut with the conductive plate (10) along several transverse cutting lines arranged in each portion located between two adjacent electric contact zones (30).

Abstract: A fixing device (20) for securing an antenna (10) to a front panel (60) of a computer enclosure (80), includes a main body (22), two fixing arms (24) extending from opposite ends of the main body, and two locking arms (30) extending from the main body and perpendicular to the fixing arms. Two position posts (23) and two pairs of hooks (42) are formed from the main body and engage in corresponding position holes (62) and mounting holes (64) of the panel. Two aligned slots (26) are defined in the fixing arms for receiving the antenna. Each locking arm includes a connecting portion (32) and a bent portion (34). Each locking arm can rotate around a rotation section (31) of the connecting portion, and a locking hole (38) of the bent portion can engage with a locking block (28) of the fixing arm thereby securing the antenna in the slots.

Abstract: A conical mount is used to mount a novelty item such as a pennant, figurine, or advertising shape secure on a post such as an automobile antenna. The conical mount secures the item rigidly to the antenna at any selected location by cooperating with a corresponding conical aperture on the mounted item to provide a fitted attachment between the novelty item and the conical mount. The two halves of the conical mount have mating tabs and slots that provide for a compressive interlock about the varying diameters of an antenna.

Abstract: A coaxial cable antenna for use in an external device, such as a programmer or monitor, to enhance communication between the external device and an implanted medical device (IMD). The coaxial cable antenna provides the external device with polarization diversity. For example, the coaxial cable antenna includes a first portion and a second portion that are substantially perpendicular to one another. Each of the portions of the coaxial cable antenna has a different polarization orientation, thus providing the programmer with polarization diversity. Further, the external device may include more than one coaxial cable antenna to provide the external device with spatial diversity as well as polarization diversity provided by the coaxial cable antenna design. The coaxial cable antenna configurations reduce problems associated with polarization mismatches, antenna nulls, and multi-path propagation interference.

Abstract: A tri-mode co-boresighted seeker including a primary collecting mirror assembly having a parabolic surface and a forwardly located dielectric secondary mirror assembly including a dielectric mirror coating which reflects infrared (IR) energy to an IR detector assembly located on a central longitudinal axis on one side of the secondary mirror while providing substantially unobstructed propagation of millimeter wave RF energy and laser energy in a joint or common signal path therethrough to means located on the other side of the secondary mirror for extracting and diverting laser energy away from the common RF-optical signal path to a laser sensor assembly while causing little or no disturbance to the RF signal as it propagates to a co-located bifurcated waveguide assembly which couples the RF energy to an RF sensor means located behind the primary mirror.

Abstract: An indoor antenna has an antenna assembly with at least one antenna, a controlling circuit, a temperature sensor and a LCD. The controlling circuit has a microprocessor. The microprocessor has a clock and is electronically connected to the temperature sensor and the LCD. The microprocessor obtains a temperature signal from the temperature sensor and keeps time so the LCD can display the temperature and current time in addition to sending broadcast signals received by the antenna to a television. Therefore, the indoor antenna is a multiple function antenna that provides other useful information.

Abstract: The bolometric detector comprises at least one receiver antenna designed to collect electromagnetic waves. The antenna is extended by a resistive load converting the power from the electromagnetic waves into calorific power. Said resistive load is in contact with a thermometric element detecting the temperature rise relating to the calorific power generated. A switch arranged between the antenna and the resistive load enables the current flow between the antenna and the resistive load to be modulated by means of control means. The switch can for example be a micro-device with a bimetal effect thermal actuator.

Abstract: An antenna built-in type mobile phone includes a mobile phone main body; and a battery detachably installed in the mobile phone main body and having an antenna at a predetermined position thereof. The battery includes a battery cell in a predetermined form, an antenna provided at the upper and the side portions of the battery cell, and a battery pack for holding the battery cell and the antenna.

Abstract: A wireless network adapter for establishing wireless communication links between electronic devices. In one embodiment, the wireless network adapter comprises wireless communication circuitry encased in a shell in the form of a detachable molding element of an electronic device. The wireless network adapter further comprises a bus connector adapted to couple the wireless communication circuitry to an expansion bus when the shell is attached to an outer surface of an electronic device. The wireless network adapter is a fully integrated solution further comprising an RF antenna for communication with a wireless network and a radio modem comprising a radio, a receiver, and modulation circuitry. The RF antenna in the wireless network adapter may take one of several forms. The antenna may be a dedicated unit housed within the shell of the wireless network adapter. Alternatively, the antenna may form a part of the outer shell of the adapter or it may form a part of a company logo located on the shell the adapter.

Abstract: In a notebook type computer terminal, a plate type slot antenna is provided between a display panel and a surrounding wall of a display panel housing so that a radiator portion thereof is projecting from a frame of the display panel and a stay, which are made of conductive material by a length more than a predetermined dimension S. A ground portion of the antenna is connected not only to a ground of a radio transceiver unit but also to the display panel housing made of conductive material through the stay.

Abstract: An electronic watch (100) has a contactless data communication function. The case (101) of the electronic watch is constructed from metal or other conductive material, and is formed in an annular shape with a dial-side opening (101A) and a back-side opening (101B). A gap (101G) is disposed on one part of the case (101) in the circumferential direction as an insulation part, and an insulation material (109) is located and fixed inside this gap (101G). Because the occurrence of an eddy current can thus be prevented, a drop in communication function can be suppressed even though an annular conductive member is used in the case or other structural parts. Furthermore, because the strength of the case can be improved and the seal or water resistance can be easily assured, the reliability of the electronic watch can be increased.

Abstract: An indoor antenna has an antenna assembly with at least one antenna, a controlling circuit, a temperature sensor and a LCD. The controlling circuit has a microprocessor. The microprocessor has a clock and is electronically connected to the temperature sensor and the LCD. The microprocessor obtains a temperature signal from the temperature sensor and keeps time so the LCD can display the temperature and current time in addition to sending broadcast signals received by the antenna to a television. Therefore, the indoor antenna is a multiple function antenna that provides other useful information.

Abstract: A road antenna apparatus includes a road antenna 104 which is mounted on a post 103 and at an elevated position on a road R and establishes radio communication with an on-vehicle radio device 102 mounted in a vehicle 101 which is traveling over the road; a controller controls a level of a transmission output signal of the antenna based on a receiving rate of the transmission output signal. A laser-beam emitting device 111 is mounted on the road antenna and radiates a laser beam onto the surface of the road. A laser-beam receiving device mounted on the road receives the laser beam emitted from the laser-beam emitting device. The controller stops the operation of the antenna when the laser-beam receiver device cannot receive the laser beam.

Abstract: In the disclosed wireless information consumer electronics apparatus, limitation of mounting position of antenna is small, and further limitation of place of installation of the apparatus is small. Further, when stacking up a plurality of information consumer electronics apparatuses such as set-top boxes, the limitation of communication area and shortening of communication distance are small in this apparatus. A metal casing is used as a resonance antenna. Current is supplied through mounting screws, grounding wires connected in direct current, or an excitation patch coupled electromagnetically. Diversity action in plural excitation modes is also possible. The antenna can be matched automatically by using varactor diode or ferrodielectric capacitor.

Abstract: A structure for concealing and/or camouflaging emitters and/or receivers of electromagnetic radiation such as, for example, telecommunication antennas is disclosed. The structure may be formed from a panel comprising a light weight, substantially RF transparent poly-vinyl-chloride (“PVC”) foam material. The structure can be fabricated in many ways and in different configurations to hide a variety of telecommunication antennas such as, for example, cellular, omni, and PCS antennas. The structure can be used in varying configurations and sizes. Configurations of the structure can be glued, bolted, and or screwed to itself or other substrates that do not impede RF signals while maintaining different overall appearances, textures, and shapes to hide or camouflage the emitters and/or receivers of electromagnetic radiation.

Abstract: The present invention relates generally to novelty items, and more particularly to a clip used to mount a novelty item such as a pennant, figurine, or advertising shape on to a post such as an automobile antenna or a writing utensil. A preferred embodiment of the present invention is a novel device to securely locate a novelty item such as a pennant or figure on a post such as an automobile antenna using a clip that secures the item rigidly to the antenna at a selected location, and provides a conical mount that cooperates with a corresponding conical aperture on the mounted item to provide a fitted attachment anywhere along the length of the antenna.

Abstract: A vehicle traffic sensor for detecting and monitoring vehicular targets is presented. The sensor employs a planar design resulting in a reduced profile sensor. The sensor includes a multi-layer radio frequency board with RF components on one of the sides and both isolation and planar array antennas on the opposing side. The antennas are preferably tapered planar array antennas which include one transmit antenna and one receive antenna. The sensor also includes at least one logic or signal processing board populated with components on a first side and a ground plane on a second side positioned toward the RF componentry of the RF board to form an RF shield. The boards are housed within a housing that is permeable, at least on the side through which the antenna structures propagate.

Abstract: The output to the antenna of an RFID tag or label is disconnected from the balance of the RFID chip by means of a series switch activated in response to a logic command, CLOAK, generated by the RFID chip. Activation of the switch disconnects the output to the antenna of the RFID tag without disconnecting its input. The output to the antenna is thus disconnected for a time sufficient to allow the remaining RFID tags in an RF interrogation field to be identified. However, the input of the antenna remains connected and is capable of receiving at any time, including during the cloaking period commands which can lift the tag out of cloaking and allow it to then selectively output its signal.

Abstract: A computer system includes a speaker-antenna assembly in the base of the system. Multiple speaker-antenna assemblies are situated in spaced apart relationship in the base in one embodiment. This provides both audio separation and isolation between the antennas for space and frequency diversity operation. By locating the speaker and antenna in a common assembly, substantial space savings are achieved.

Abstract: A wireless communication device to be removably held in a host apparatus. The wireless communication device comprises a printed circuit board, a cover, and a planar antenna module. The printed circuit board comprises electronic components configured to perform wireless communication. The cover covers the electronic components and the upper surface of the board. The planar antenna module has an electromagnetic radiation surface and is provided in the upper surface of the cover such that it is substantially flush with an outer surface of the host apparatus during operation of the wireless communication device.

Abstract: An apparatus and method for aligning the antennas of two transceivers of a point-to-point wireless millimeter wave communications link. A narrow band oscillator power source is substituted for the signal transmitting electronics associated with a first antenna and a power detector is substituted for the signal receiving electronics associated with a second antenna. In preferred embodiments after a first alignment procedure is performed, the procedure is repeated with an oscillator power source connected to the second antenna and a power detector connected to the first antenna. In other preferred embodiments the antennas are pre-aligned using a signaling mirror or a narrow beam search light or laser. After the antennas are aligned the transceiver electronics are reconnected. In preferred embodiments the communication link operates within the 92 to 95 GHz portion of the millimeter spectrum and provides data transmission rates in excess of 155 Mbps.

Abstract: A method for increasing the interrogation range of an RF Tag in a radio communication system using RF Tags with multiple reflecting antenna elements. The reflecting antenna elements are predeterminately positioned, and preferably aligned, with respect to each other in the direction of expected incident RF radiation. The reflecting antenna elements are sequentially pulsed on and off such that while the first reflecting antenna element is in a signal reflecting operating state, the remaining reflecting antenna elements are in a substantially non-reflecting state, and when the second reflecting element is in a reflecting operating state, the remaining reflecting elements are in a non-reflecting state, etc. The sequential pulsing and predetermined fixed spacing between the reflector elements generates constructive interference between the reflected signals of the reflecting antenna elements which increases the power of the resulting reflected signal.

Abstract: Equipment and methods for aligning the antennas of two transceivers of a point-to-point wireless millimeter wave communications link and keeping them aligned. Each of two communicating antennas is equipped with a telescopic camera connected to a processor programmed to recognize landscape images. The processors are programmed to remember the pattern of the landscape as it appears when the antennas are aligned. Each of the cameras then view the landscape periodically or continuously and if the landscape in view changes by more than a predetermined amount a signal is provided to indicate a misalignment. An operator can then take corrective action or alternatively the antenna system can be configured for remote or automatic realignment based of feedback from the camera.

Abstract: An antenna electrode for an inductively coupled plasma generation apparatus includes: a copper tube; a silver layer on an outer surface of the copper tube; and a first insulating layer on the silver layer. On the other hand, an antenna electrode for an inductively coupled plasma generation apparatus includes: an oxygen-free copper tube; and a first insulating layer on an outer surface of the oxygen-free copper tube.

Abstract: An easily-constructed foundation for an antenna support tower is provided that requires no fabricated support surface at the installation site. The foundation is a radial array of prefabricated buildings connected near their inner corners to each other. In a first embodiment, one leg of a multi-legged tower rests on each building, the buildings transferring forces from the tower to the support surface below the buildings. In a second embodiment, a tapered monopole tower is located in the center of the array of buildings. The monopole tower may rest on a prepared surface or may be supported above the support surface. Support structures, each having a central ring and radially extending arms, are attached at the building connection points, one support structure above the other. The monopole tower is positioned within the central ring, transferring lateral loads through the ring and arms to the buildings, negating the need for a moment base.

Abstract: An antenna for linearly polarized wave is accommodated in a case in which a heat sink is provided. By rotating the case depending on the vertically polarized wave or the horizontally polarized wave, wireless communication or broadcasting using the vertically polarized wave or the horizontally polarized wave can be selectively realized with high precision.

Abstract: The present invention provides a storage medium having intelligence that has, in one-piece, a storage medium and an electronic circuit, and has communication structure with an external apparatus to reduce loads of a main-frame of a system, and that can further manage and control external system equipment, the apparatus communicating information with the electronic circuit, and a system including them. The electronic circuit mounted on the intelligent disk 2 has a contact type or a non-contact type interface as communication structure. The contact type interface is connected to an external contact electrically and/or mechanically. The non-contact type interface is connected to an external interface via sound, light, radio waves, or induction. The non-contact type, a plurality of balanced microstrip lines are formed on a rotating medium and a fixed body in concentric circles, they are located so that respective balanced microstrip lines face.

Abstract: A system for transmitting data between a rotating system and a stationary system. This system has a patch antenna affixed to the surface of a rotating body. A transmitter splits an RF signal into n identical RF signals. The n RF signals are phase shifted to have phases that are 360 divided by n degrees apart. The RF signals are then sequentially applied to the n patch antennas which broadcast the RF signals. A stationary receive antenna receives broadcast RF signals from one of the n patch antennas at a time. As a first antenna rotates out of range of the receive antenna, second antenna rotates into range. The phase shift between the RF signals broadcast between from the first and second antenna assures that data is not lost as the rotation occurs.

Abstract: An apparatus (1) for converting solar energy into electrical energy and for radiating and/or receiving high frequency electromagnetic waves is described. The apparatus (1) includes at least one solar cell (2) provided with electrodes in the form of electrically conducting contacts, wherein at least one of the contacts of the solar cell at the same time forms an antenna element.

Abstract: System and method for rapidly reconfigurable two-dimensional true time delay generation for phased array antennas is described. The system utilizes a broadband light source, an array of fiber chirp gratings in a single fiber, and an acousto-optic spectrometer to generate a time-delayed linear grating. The grating is subsequently rotated to the desired angle utilizing an acousto-optic device having no moving parts.

Abstract: A heat insulation chamber according to the present invention is a heat insulation chamber which is made of heat insulating material and forms an inner chamber for accommodating an electronic part. This heat insulation chamber achieves coupling between the electronic part accommodated in the inner chamber formed within a cabinet and the outside of the cabinet by a radio transmission path or a coupling path by static coupling or inductive coupling. A thermostatic chamber and a cryostat according to the present invention comprise the aforementioned heat insulation chamber, a heat exchanger mounted in the heat insulation chamber, and a thermoregulator which maintains the temperature of the inner chamber accommodating the electronic part at an operating temperature of the electronic part through the heat exchanger.

Abstract: A handheld computer is provided including a housing and a device slot formed into the housing. The device slot is configured to receive an elongated member. The flex member includes an internal structure to allow the elongated member to bend, while supporting the elongated member from yielding.

Abstract: The present invention relates to a wireless communication card device, which is for example a standardized expansion card for an electronic device, and which card (CP) comprises at least a cover surface (1) and a bottom surface (2) as well as a frame structure (3) placed therebetween and edging said card (CP), and which card (CP) further comprises at least an antenna structure (ANT). Said antenna structure (ANT) is integrated in said frame structure (3). The antenna structure (ANT) can be arranged primarily on the outer surface (3a) of said frame surface structure (3). The card can be for example a PCMCIA or CF card.

Abstract: An antenna apparatus built in a cover of an electronic device, such as portable data processors, to serve as a latch of the cover in addition to be an antenna for transmitting and receiving wireless communication signals. An antenna unit is embedded in a movable receptacle mounted on the cover so as be rotated to the highest position for a better communication performance when the cover is turned to a using position.

Abstract: A communication system which utilizes the building metal frame as a communication medium is described. More particularly, and in accordance with one embodiment of the present invention, a wire coil is located near to one of the frame pieces so that the coil lays flat in the plane of the building face. A time varying current in the coil creates a time varying magnetic dipole field. This field changes the flux within a “flux window” which is defined as one of the rectangular sections formed by the frame steel members. This changing flux creates a time varying potential around the window, which creates a time varying current that acts in opposition to the induced flux. This current also excites a time varying flux in the neighboring flux windows, which induces time varying fluxes in their neighbors and so on.

Abstract: System and method for rapidly reconfigurable two-dimensional true time delay generation for phased array antennas is described. The system utilizes a broadband light source, an array of fiber chirp gratings in a single fiber, and an acousto-optic spectrometer to generate a time-delayed linear grating. The grating is subsequently rotated to the desired angle utilizing an acousto-optic device having no moving parts.

Abstract: An internal dipole bowtie/meander antenna for a mobile terminal is capable of operating in two distinct RF bands. The antenna includes a resonating element and a ground element positioned on opposite sides of a dielectric material. The dielectric material is positioned generally perpendicular to a ground plane of the antenna. Tuning elements may be added to vary the coupling of the antenna elements to the ground plane.

Abstract: For use with an electric meter chassis having a dielectric housing protruding therefrom, an antenna for allowing electric meter circuitry within the chassis to communicate wirelessly through the dielectric housing and a method of manufacturing the same. In one embodiment, the antenna includes: (1) antenna elements, located within the dielectric housing and adapted to transmit and receive electromagnetic radiation and (2) a balance circuit, coupled to the antenna elements to cause the antenna elements to act as an antenna and couplable to an unbalanced output port of a wireless communication circuit, that balances an impedance of the unbalanced output port thereby to balance the antenna.

Abstract: A method for increasing the interrogation range of an RF Tag in a radio communication system using RF Tags with two reflecting antenna elements. The second reflecting antenna element is predeterminately positioned, and preferably aligned, with respect to the first reflecting antenna element in the direction of expected incident RF radiation and is spaced from the first reflecting antenna element at a predetermined fixed distance. The first and second reflecting antenna elements are alternately pulsed on and off such that while the first reflecting antenna element is in a signal reflecting operating state, the second reflecting antenna element is in a substantially non-reflecting state and vice versa. The alternate pulsing and predetermined fixed spacing between the first and second elements generates a known phase difference between the reflected signals of the first and second reflecting antenna elements.

Abstract: A television signal receiving tuner comprising: an input terminal for admitting VHF and UHF band television signals; a correcting circuit connected to the input terminal and having inductors to correct an effective length of an antenna; a branching filter for branching the signals from the correcting circuit into VHF band television signals and UHF band television signals to be output separately; a VHF tuner unit for receiving the VHF television signals from the branching filter; and a UHF tuner unit for receiving the UHF television signals from the branching filter; wherein values of the inductors are made variable

Abstract: A multi-mode, common-aperture antenna system capable of simultaneously transmitting and/or receiving electromagnetic radiation in at least two frequency bands. The antenna system includes a first beam antenna comprised of a parabolic reflector and four open-ended waveguides that act as an antenna feed. The parabolic reflector focuses radiation along a first beam axis that may be scanned electronically or mechanically. The four waveguides extend from the focus of the parabolic reflector to transceivers that transmit and/or receive radiation in a first mode. The transceivers mount at the rear of the reflector. The antenna system also includes a second beam antenna which operates in a second mode, e.g. optical or infrared (IR) mode. The second beam antenna includes a small opening in the parabolic reflector that acts as an optical aperture for a focusing lens mounted at the rear of the reflector and positioned coaxially with the small opening. An optical apparatus occupies the focal plane of the focusing lens.

Abstract: A magnetic tape information storage media includes a cassette housing having one or more spools for holding a length of magnetic tape and an integral radio frequency identification (RFID) transponder. The RFID transponder may be utilized by an external system to provide functions such as, automated sale, rental, or loan of the media, authentication of the media, indexing of information recorded to the media, enablement/disablement of playback of the media, recording of the number of times the media has been played, inventory, and the like.

Abstract: A multi-purpose vehicle ornament includes a hollow base component configured to resemble a select figurine, such as an animal's head, having one or more apertures thereon in communication with an interior chamber. The base component includes a neck portion adapted to receive a trailer hitch ball, an air freshener assembly or an attachment plug that is mountable to the top end of a vehicle antenna. The attachment plug includes a warning device that alerts nearby animals of an approaching vehicle.

Abstract: An arrangement for radio utility meter reading processing of data acquisition for use with an automatic billing system involves a water meter transmitter antenna system installed at or near ground level in an outdoor environment. A radio frequency utility meter communication apparatus transmits utility meter data to a remote utility meter data collection unit from an underground pit box. The pit box receives a utility meter and has a generally ground level pit lid with an opening therethrough. An antenna element has an upper member extending at least partly through the pit lid opening and received thereabove. A depending base of the antenna element extends from the upper element and passes through the pit lid opening into the underground pit box. The antenna element is at least partly exposed to its surrounding environment.

Abstract: A wrist band for a device main body containing communication circuits, having a first wrist band at least partially covering a first antenna plate, a second wrist band at least partially covering a second antenna plate, and a clasp device including a contact mechanism for electrically connecting the first antenna plate and the second antenna plate to form a loop-like antenna when the second wrist band and first wrist band are clasped. The clasp device is releasable and has a three-fold stricture. The clasp device includes a clasp lower plate having a base end portion fixed to the first wrist band, a clasp intermediate plate connected to the clasp lower plate, a clasp upper box connected to the clasp intermediate plate and fixed to the second wrist band and a clasping lock mechanism that fixes the clasp upper box to the clasp lower plate when the clasp intermediate plate is rotated and overlapped onto the clasped lower plate.

Abstract: An object of the present invention is able to provide an IC card in which for example, even if a state should occur in which a plurality of IC cards are piled up in any direction for use, a received signal is not greatly lowered but a normal usage pattern is secured. When the IC cards are piled up with the contours united, a projection drawing of an antenna of one IC card to an antenna surface of the other IC card has an area not overlapped at least 15% or more of an area having an antenna to the other antenna surface on the projection surface and the IC card can work.

Abstract: A transponder (30), intended to exchange data during a half duplex communication, includes a coil (3), a capacitor (8) connected to the coil to form a resonant circuit, and processing means (33) arranged to process the data. The transponder further includes switching means (32) arranged so that, under the control of the processing means, the switching means connect the processing means in series with the capacitor and the coil which are connected to form, during the entire duration of the reception phase, a parallel LC circuit and, during the entire duration of the transmission phase, a series LC circuit to optimize the electric power exchanged between an antenna and the processing means.

Abstract: A horizontal plasma antenna is provided. An ionizer generates an ionizing am through a horizontal tube to form a bounded plasma column extending along a horizontal axis in a gravity field. An amplitude or frequency modulating signal is applied to Helmholtz coils to control a horizontal magnetic field that is perpendicular to the horizontal axis. The resulting changes in the magnetic field produce a drift current in the plasma that, in turn, radiates an amplitude or phase modulated electromagnetic field from the plasma column.