Abstract: Antennas that can transceive signals in an elliptically-polarized, omni-directional manner are described. In an example embodiment, an antenna comprises two elements proximally located to each other at a predetermined distance, such that two orthogonally-polarized omni-directional electromagnetic waves are tranceived. In a further example, the two elements are supported by an internal printed circuit, the printed circuit including conductors configured to supply a feed to the elements, which may be contained within a radome. Alternate embodiments comprise a plurality of elements of varying lengths.

Abstract: A conductive layer is applied to a thermoformed plastic component to form an integrated antenna assembly. The conductive layer is on a flexible layer and adhered or attached to the rigid thermoformed plastic carrier. Features are designed into the thermoformed plastic carrier to provide electrical contacts from the conductive layer to the circuit board of the communication device and to mechanically attach the carrier to the circuit board. Multiple conductive layers can be applied to a multi-layered thermoformed structure to form a multi-antenna assembly.

Abstract: A group antenna has at least two transducers disposed offset from one another. A network is provided to supply the transducers. The network comprises coaxial cables running between a distributor and/or summation circuit and the access, connection, and/or supply points of the associated transducer. The network comprises at least two different types of coaxial cable characterized by different phase velocities.

Abstract: A multi-frequency antenna (100) comprises a radiating patch (20) having a first radiating body operating in lower frequency band and a second radiating body operating in higher frequency band; a grounding patch (10) spaced apart from the radiating patch; a connecting element (30) electrically connecting the first radiating body, the second radiating body, and the grounding patch; a feeding line (5) comprising an inner conductor and an outer conductor. The first radiating body comprises a first radiating element and a second radiating element extending from the first radiating element. The second radiating body comprises the first radiating element and a third radiating element extending from the first radiating element. The radiating patch also comprises a fourth radiating element extending from an end of the connecting element and a coupling element extending from the grounding patch. The inner conductor electrically connects to a joint of the fourth radiating element and the connecting element.

Abstract: A compact patch antenna array for mobile terminal applications comprising: a plurality of radiators mounted on one surface of a dielectric, with a ground plane being mounted on the other side of the dielectric. Beneath the ground plane, another dielectric with feeding network is placed. Other embodiments are described and shown in FIG. 2.

Abstract: In one embodiment, an integrated circuit antenna array is provided that includes: a low-voltage substrate supporting an RF transmission network, and a high-voltage substrate bonded to the low-voltage substrate, the high-voltage substrate supporting a plurality of antennas coupled to the RF transmission network through switch-mode power amplifiers integrated into a surface of the high voltage substrate.

Abstract: A multiband antenna includes a feed portion, a radiating portion, and a ground via. The feed portion includes a first feed section and a second feed section paralleled to each other. The radiating portion includes a first radiator, a second radiator and a third radiator. The first radiator is L shaped with a free end. The second radiator is L shaped with a free end. The free ends of the second radiator and the first radiator extend toward to each other and partially overlap to define a slot therebetween. The third radiator includes a trapezoid section and a connecting section. The short portion includes a first short section and a second short section. The first short section connects the first radiator to the ground via, and the second short section connects the second radiator and the third radiator to the ground via.

Abstract: The present invention relates to antenna calibration for active phased array antennas. Specifically, the present invention relates to a built-in apparatus for autonomous antenna calibration. Accordingly, the present invention provides an antenna array comprising: a plurality of antenna elements forming an array face and a plurality of calibration antennas mounted around the array face. The plurality of calibration antennas comprising one or more pairs. The calibration antennas have overlapping coverage areas such that the entire array face of the antenna array is within the coverage area of at least one calibration antenna and each pair of calibration antennas have overlapping coverage areas such that of a common area of the array face is within both coverage areas.

Abstract: Methods for producing wide-band planar array antenna designs and antenna corresponding thereto.

Abstract: The disclosure relates to a planar antenna comprising at least one radiator element separated from a ground plane by a dielectric. The antenna also comprises an assembly of conductive studs which is connected to and extends from at least one element of a group of elements comprising the ground plane and at least one radiator element in such a way that at least one physical dimension of said at least one radiator element for a determined resonance frequency is reduced.

Abstract: A sub-array of slot-coupled microstrip antennas fed using microstrip lines on an opposing substrate. Also provided is an omni-directional antenna comprised of six of the sub-arrays arranged in a hexagonal fashion. The gain of the antenna is ˜6 dB with a 3 dB elevation beam width of ˜30 degrees. The design provides constant beam angle over frequency, which is important for frequency-hopping applications, and the potential to add beam control to mitigate jamming in different sectors.

Abstract: An apparatus comprises a structure, an array of oscillator units, a plurality of waveguides in the structure, and a synchronizing cavity located within the structure. The array of oscillator units has a plurality of rows and a plurality of columns associated with the structure. Oscillator units in a row within the array of oscillator units are directly coupled to each other. The plurality of waveguides is configured to couple the array of oscillator units to the synchronizing cavity. The synchronizing cavity is configured to cause the array of oscillator units to operate at substantially a common frequency.

Abstract: An RFID antenna comprising an elongated structure existing along an axis that is long compared to the signal wavelength and including twin ribbon-like feed lines of electrically conductive material, the feed lines being in a common plane and being uniformly laterally spaced from one another, and a plurality of radiating perturbations associated with the feed lines at a plurality of locations spaced along the feed lines, at each location each feed line has its own individual perturbation or portion of a perturbation.

Abstract: A radar apparatus has a plurality of receiving antennas and an array transmitting antenna controlled to successively vary the direction of a transmitted beam within a range which includes a target detection range of directions. The direction of any target within the target detection range is detected based on a phase difference between incident reflected waves of adjacent receiving antennas. To eliminate false targets resulting from aliasing, each detected target is authenticated based upon closeness of its detected direction to the current transmitted beam direction. The receiving antennas and transmitting antenna are configured to exclude directions of grating lobes of the transmitted beam from the detection range, and thereby suppress effects of received reflected waves that originate from grating lobes.

Abstract: In a conventional automotive radar, a return occurs in a phase difference characteristic necessary for a super-resolution method, resulting in an increase of a detection error, or an extremely narrowed azimuth detection range. A transmitting array antenna, and receiving array antennas are composed of antenna elements respectively, and aligned in a horizontal direction. The weighting of receiving sensitivities of the antenna elements of the receiving array antenna 1 is A1, A2, A3, and A4, which are monotonically decreased from an inner side toward an outer side as represented by A1?A2?A3?A4. On the other hand, the receiving array antenna 3 is symmetrical with the receiving array antenna with respect to the receiving array antenna 1.

Abstract: This disclosure relates to monolithic focal plane arrays including an antenna coupled to a backwards diode to make large scale arrays. The antennas may be, for example, a bow-tie antenna, a planar log-periodic antenna, a double-slot with microstrip feed antenna, a spiral antenna, a helical antenna, a ring antenna, a dielectric rod antenna, or a double slot antenna with co-planar waveguide feed antenna. There is no restriction on the type of antenna coupled with the backwards diodes to make monolithic large scale arrays.

Abstract: In an antenna structure having a plurality of serially fed patch elements, at least one of the patch elements has a slot coupling to the continuation of the feed line for influencing the radiation of this patch element.

Abstract: A dual beam dual-selectable-polarization phased array antenna comprises an aperture unit, a printed wiring board, radiating elements, chip units, a pressure plate, and a rear housing unit. The printed wiring board has sub assemblies bonded to each other with a bonding material providing both mechanical and electrical connection. The printed wiring board is connected to the aperture unit. The radiating elements are formed on the printed wiring board. The chip units are mounted on the printed wiring board. The chip units include circuits capable of controlling radio frequency signals radiated by the radiating elements to form dual beams with independently selectable polarization. The pressure plate is connected to the aperture unit. The aperture unit is connected to the rear housing unit such that the aperture unit covers the rear housing unit.

Abstract: Disclosed is an antenna for a radar device which is available for angle measuring in a wide angle for both of the right and the left directions from a travelling direction of a vehicle. SOLUTION: An antenna for radar device 100 comprises an antenna unit 110 as a combination of one of antenna elements 102 and one of second bottom boards 103, wherein a plurality thereof are arrayed on a first bottom board 101. The antenna element 102 is bent as L-shaped, one end thereof is opened, another end thereof penetrates the first bottom board 101 as noncontact therewith, and is connected to a transmission line 104 with further penetrating a line substrate 105.

Abstract: In an exemplary embodiment, a modular phased array comprises a ground plane with a first side and a second side, where the ground plane has a slot. The modular phased array also comprises a patch antenna located on the first side of the ground plane, and a feed network located on the second side of the ground plane. In an exemplary embodiment, the ground plane isolates the patch antenna from the feed network. The feed network includes a compacted hybrid with two output ports. In an exemplary embodiment, the ground plane comprises slots that are non-orthogonal and non-parallel to the two output ports of the feed network. In another exemplary embodiment, the distance from the center of the patch antenna to the farthest output port of the two output ports of the compacted hybrid is ½ wavelengths or less.

Abstract: An array antenna includes radiating elements distributed in sub-arrays, the sub-arrays being fed via substantially identical amplifiers operating at an identical level. The radiating elements of one and the same sub-array are distributed non-uniformly in space, the distance between two adjacent radiating elements being dependent on the law of illumination desired for said array antenna and the technical characteristics of the sub-arrays.

Abstract: A hybrid antenna unit includes a circuit board having top and bottom surfaces, a planer antenna element which is mounted on the top surface of the circuit board and which receives first and second radio waves, an antenna base and a top cover that cover the circuit board and the planer antenna element. A bar antenna element stands on the top cover in a slanting position. A processing unit is mounted on the bottom surface of the circuit board and is connected to the planer antenna element. The processing unit processes the first and the second radio waves. A shielding case is mounted on the bottom surface of the circuit board and shields the processing unit. A booster circuit is mounted on the circuit board and is for use in the bar antenna element.

Abstract: A broadband radiation unit includes first and second pairs of symmetric dipoles operable to transmit communication signals and to receive communication signals. The first pair of symmetric dipoles has a polarization that is orthogonal to that of the second pair of symmetric dipoles. The first and second pairs of symmetric dipoles together define an annular structure. A plurality of baluns are associated with the first and second pairs of symmetric dipoles such that a given one of the baluns is associated with a respective symmetric dipole of the pairs of symmetric dipoles. Each one of the baluns feeds a balanced current to its associated symmetric dipole. Each symmetric dipole of the first and second pairs of symmetric dipoles has two unit arms which are disposed on and arranged symmetrically about its associated balun.

Abstract: An enhanced antenna system may include at least two antenna elements distanced from each other and substantially in parallel and connected to a common input/output port for said antenna system. Each of said antenna elements may include a portion having an impedance such that the impedance is influenced by an external load such that one of the at least two antennas closest to said load is influenced by said load and detuned.

Abstract: A collapsable portable wireless unit (100) comprises an upper case (101) and a lower case (102) coupled through a hinge member (103) to open/close freely. A planar conductor (105) is arranged on the upper case (101). First and second power supply sections (111, 112, 103) are arranged on the planar conductor (105) at a specified interval. A harmonic signal distributor (120) is arranged on a circuit board (110) provided in the lower case (102) and distributes a harmonic signal to the first and second power supply sections (111, 112, 103). A phase shifter (121) sets the exciting phase of the harmonic signal in the second power supply sections (112, 103) at a value different from that of the exciting phase of the harmonic signal in the first power supply sections (111, 103).

Abstract: A patch array antenna includes a planar base on which is defined a ground plane and feed positions that are electrically isolated from the ground plane. A plurality of patch elements are configured to resonate over a predetermined frequency range. Each patch element is isolated from the ground plane and disposed on the base over the ground plane so that an air dielectric is defined between the patch element and the ground plane. Each patch element defines a resonant portion that is electrically connected to a respective feed position. A feed network is defined on the base that electrically connects the feed positions to one or more output points on the base.

Abstract: The present invention relates to an antenna arrangement comprising a first and third set of antenna elements, being arranged as a first and third column and aligned along a first and third symmetry axis, respectively, each column comprising elements being operative in a first frequency band (f1) and elements being operative in a second frequency band (f2). The antenna arrangement further comprises a second set of antenna elements, being arranged as a second intermediate column along a second symmetry axis, said second symmetry axis being parallel to said first and third symmetry axes, and being operative in said second frequency band (f2), wherein the ratio of said second centre frequency (f2) to said first centre frequency (f1) is in the range 1.5 to 3. The distance between said first and third symmetry axes is less than or equal to 0.

Abstract: The present invention relates to a Radio Frequency Repeater to prevent oscillation with canceling a feedback interference signal between transmitting and receiving antenna with built-in transmitting and receiving antenna in wireless mobile communication repeater. A radio frequency repeater for canceling a feedback interference signal has a downlink path from a base station to a terminal and an uplink path from a terminal to a base station, and said downlink path and said uplink path is separated and combination by a duplexer.

Abstract: In a bistatic array antenna, beam focusing in preferred directions of the array antenna occurs with the aid of a focusing arrangement in such a way that beam focusing occurs both in a first preferred direction for the array elements of the transmit mode as well as in another second preferred direction for the array elements of the receive mode.

Abstract: An antenna arrangement, method, and cellular communications system for transmitting and receiving signals between a base station tower, ground-based mobile subscribers, and an aircraft. The antenna arrangement includes a vertically oriented array of antenna elements, and a feedline arrangement that feeds the antenna elements with progressively phase-retarded signals, thereby generating an elevated antenna beam directed upward toward the aircraft and away from the ground-based mobile subscribers. In one embodiment, the antenna arrangement also generates a horizontal antenna beam for communicating with the ground-based subscribers. The horizontal beam and the elevated beam are sufficiently separated in elevation to prevent mutual interference when using the same frequency spectrum.

Abstract: Antenna arrangement for a multi radiator base station antenna, the antenna having a feeding network based on air filled coaxial lines (15; 19), wherein the coaxial line being an integrated part of a back side of an antenna reflector (1), and wherein the coaxial line comprises an outer conductor (9) and an inner conductor (7; 14). Two parallel columns of radiators (11) are placed on a front side of the antenna reflector (1), the radiators (11) being fed from said feeding network.

Abstract: Antennas that can transceive signals in an elliptically-polarized, omni-directional manner are described. In an example embodiment, an antenna comprises two elements proximally located to each other at a predetermined distance, such that two orthogonally-polarized omni-directional electromagnetic waves are tranceived. In a further example, the two elements are supported by an internal printed circuit, the printed circuit including conductors configured to supply a feed to the elements, which may be contained within a radome. Alternate embodiments comprise a plurality of elements of varying lengths.

Abstract: The subject matter discloses a wireless communication system comprising: at least one active phased array antenna unit for transmission and reception of electronic radiation and a phased array circuit for driving and controlling said at least one phased array antenna unit, wherein said at least one phased array antenna unit comprises at least four one dimensional arrays of radiations. The subject matter also discloses a method for utilizing the described system.

Abstract: A plurality of high-frequency beam-forming RF antenna arrays are used to enable parallel data transmission at multi-Gigabit per second data rates. In one embodiment, the 60 GHz band is used for parallel transmission of data from an antenna array printed on the substrate or packaging of an integrated circuit.

Abstract: A planar antenna includes: a substrate unit; a feeding line provided on the substrate unit and having first and second ends, a feeding point disposed between the first and second ends, and first and second feeding segments extending from the feeding point in opposite directions to the first and second ends, respectively, the lengths of the first and second feeding segments having a length difference that is approximately ?/2, where ? is the wavelength of an operating frequency of the planar antenna; a first radiating unit provided on the substrate unit and disposed adjacent to and spaced apart from the first feeding segment of the feeding line; a second radiating unit provided on the substrate unit and disposed adjacent to and spaced apart from the second feeding segment of the feeding line; and a grounding unit provided on the substrate unit for grounding.

Abstract: An RFID antenna comprising an elongated structure existing along an axis that is long compared to the signal wavelength and including twin ribbon-like feed lines of electrically conductive material, the feed lines being in a common plane and being uniformly laterally spaced from one another, and a plurality of radiating perturbations associated with the feed lines at a plurality of locations spaced along the feed lines, at each location each feed line has its own individual perturbation or portion of a perturbation.

Abstract: An RF transceiver front-end includes receiver and transmitter front-ends. The receiver front-end includes 1st and 2nd antennas, a ninety degree phase shift module and an LNA module. The 1st and 2nd antennas receive inbound RF signals and provide a first directional circular polarization. The ninety degree phase shift module phase shifts the RF signals received by the 2nd antenna. The LNA module amplifies the RF signals received by the 1st antenna and the shifted RF signals. The transmitter front-end includes a PA module and 3rd and 4th antennas, which provide a second directional circular polarization. The PA module amplifies outbound RF signals to produce amplified outbound RF signals and amplified orthogonal outbound RF signals. The 3rd antenna transmits the amplified outbound RF signals and the 4th antenna transmits the amplified orthogonal outbound RF signals.

Abstract: An exemplary embodiment of a dual band antenna array includes a folded thin circuit board structure with a thin dielectric layer and a conductor layer pattern formed on a first surface of the dielectric layer, the circuit board structure folded in a plurality of folds to form a pleated structure. A first array of radiator structures on the first surface is configured for operation in a first frequency band in a first polarization sense. A second array of radiator structures is configured for operation in a second frequency band in a second polarization sense. A conductor trace pattern is formed on the folded circuit board to carry control signals, DC power and RF signals. Active RF circuit devices are attached to the folded circuit board in signal communication with the conductor trace pattern.

Abstract: An antenna system with an improved antenna feed system is discussed. This multi-beam antenna system can produce a beam of electromagnetic energy propagating in a desired direction by emitting multiple beams of electromagnetic energy that constructively and destructively interfere. The direction of the net beam of electromagnetic energy can be controlled by adjusting the phase and amplitude of the emitted beams of electromagnetic energy which in turn influences the constructive and destructive interference. The phase and amplitude adjustments can be determined by sampling coordinate rotation or similar functions. Aliased components of these functions can be particularly useful in element reduction.

Abstract: Methods and systems for generating and imaging THz electromagnetic radiation using a composite dipole array made up of novel structures of non-linear dipole strings with dual frequency resonances for frequency up conversion and frequency down conversion are disclosed. THz electromagnetic radiation resulting from the frequency down conversion process can be used as an illumination source for imaging, as a carrier for communications, or as an energy source for spectroscopy, for example. Optical electromagnetic radiation resulting from the frequency up conversion process can be used to form images from THz electromagnetic radiation for contraband detection, guidance systems, and medical applications, for example.

Abstract: A rectenna capable of power conversion from electromagnetic (EM) waves of high frequencies is provided. In one embodiment, a rectenna element generates currents from two sources—based upon the power of the incident EM wave and from an n-type semiconductor, or another electron source attached to a maximum voltage point of an antenna element. The combined current from both sources increases the power output of the antenna, thereby increasing the detection sensitivity of the antenna of a low power signal. Full wave rectification is achieved using a novel diode connected to a gap in the antenna element of a rectenna element. The diode is conductive at forward bias voltage or reverse bias voltage, and rectifies the antenna signal generated by the desired EM wave received by antenna raise from The rectenna element of the present invention may be used as a building block to create large rectenna arrays.

Abstract: An antenna system includes a heptagonal antenna array having one center antenna element and seven circumferentially surrounding antenna elements offering improved near and far sidelobe rejection, which is well suited for mechanically-gimbaled and time delayed electrical steering antenna applications.

Abstract: In this second radio channel setting example, the grouping is done for each radio mobile stations 98 running on the same lane. A different radio channel is assigned to each group. Accordingly, this prevents the beam patterns using the same channel from intersecting with each other (interfering with each other). Actually, as shown in FIG. 10B, the pas or the pursuit does not occur between the radio mobile stations 98. Thus, the same radio channel is assigned to each radio mobile stations 98 running on the same lane so as to avoid the interference in the same radio channel. Hence, the same radio channel can be repeatedly used.

Abstract: The disclosure relates to a planar antenna comprising at least one radiator element separated from a ground plane by a dielectric. The antenna also comprises an assembly of conductive studs which is connected to and extends from at least one element of a group of elements comprising the ground plane and at least one radiator element in such a way that at least one physical dimension of said at least one radiator element for a determined resonance frequency is reduced.

Abstract: Embodiments of a beam-reconfigurable patch antenna are described generally herein. Other embodiments may be described and claimed.

Abstract: An element support and thermal control arrangement for an active array antenna, preferably modular, using line-replaceable units (LRUs), includes a radiating-side liquid-cooled cold plate lying parallel with a liquid-cooled TR coldplate. Antenna elements are supported and cooled by the radiating cold plate, and a beamformer lies between the radiating and TR coldplates. A plurality of column coldplates are attached to the rear of the TR coldplate and define bays or volumes in which power LRUs can be fitted in thermal communication with the TR coldplate, the column coldplates, or both.

Abstract: The invention relates to a cross antenna comprising linear sub-antennas and to the associated processing. More specifically, the invention relates to an antenna (1) comprising: first (2) and second (3) linear sub-antennas which are equipped with sensors (21-2M, 31-3N) forming first and second line segments and generating a basic signal (Si?, Gj?), the angle between the respective directional vectors of the first and second tangents to the midpoint respectively of the first and second line segments being between 30° and 150°; an antenna processing device (4, 5) forming combined signals (VSi, VGj); a signal-processing device (6, 7) generating combined useful signals (TSi, TGj); a device (8) for calculating the correlation coefficients ([Cij]) between the combined useful signals; and a device (8) for generating a detection signal ([Rij]) when a correlation coefficient exceeds a threshold. The invention can be used, for example, to obtain an antenna having fewer sensors for an equivalent performance level.

Abstract: An antenna array having a plurality of array elements is disclosed. The antenna array comprises a first array element (204A) having a first suspended radiator (207A) and a first ground conductor (206A), the first suspended radiator being displaced from the first ground conductor. The antenna also comprises a second array element (204B) being adjacent to the first array element, the second array element having a second suspended radiator (207B) and a second ground conductor (206B), wherein the second suspended radiator is displaced from the second ground conductor. In the antenna the first ground conductor is adjacent to and displaced from the second ground conductor and the first ground conductor is disposed on a first tier and the second ground conductor is disposed on a second tier to form an at least two-tiered ground conductor.

Abstract: For suppressing secondary lobes in pulsed radar systems, the antenna characteristics of the transmitting antenna and the receiving antenna are designed so that the dominant secondary lobes appear mutually offset and their maximums and minimums are mutually suppressed. This increases the safety against detection of false targets.

Abstract: A patch array antenna includes a planar base on which is defined a ground plane and feed positions that are electrically isolated from the ground plane. A plurality of patch elements are configured to resonate over a predetermined frequency range. Each patch element is isolated from the ground plane and disposed on the base over the ground plane so that an air dielectric is defined between the patch element and the ground plane. Each patch element defines a resonant portion that is electrically connected to a respective feed position. A feed network is defined on the base that electrically connects the feed positions to one or more output points on the base.