Abstract: A radiating feed of a structural module comprises a feed horn linked to an RF system via a bent ring to orient the feed horn in a desired direction. The bend of the bent ring has an aperture angle of value predefined individually for each horn as a function of the desired orientation, and a vertex placed in a plane of symmetry of the RF system orthogonal to the plane XY containing the RF system. The RF systems of each radiating feed can then be arranged alongside one another and be incorporated in structural planar subassemblies, reducing the number of parts needed to create the multibeam antenna.

Abstract: A dual-band antenna including a ground element, a short-circuit element, a feed element and a radiator is provided. The radiator includes a first connection segment, a first radiation element, a second radiation element, a third radiation element and a fourth radiation element. The dual-band antenna covers a first frequency band a second frequency band through the symmetrical first radiation element and second radiation element and the symmetrical third radiation element and fourth radiation element, so as to effectively decrease an antenna volume, and satisfy the requirement of a signal coverage range of a communication device.

Abstract: A space vehicle electromechanical system may employ an architecture that enables convenient and practical testing, reset, and retesting of solar panel and antenna deployment on the ground. A helical antenna winding fixture may facilitate winding and binding of the helical antenna.

Abstract: A communication device includes a ground plane and an antenna element. The antenna element includes a radiation metal strip and a feed metal line. The feed metal line is disposed between the radiation metal strip and the ground plane. A first metal strip of the radiation metal strip has a first end electrically connected to the ground plane by a first metal section. A second metal strip of the radiation metal strip has a second end electrically connected to the ground plane by a second metal section. The first metal strip is coupled to a first connection point on the feed metal line through a first capacitive element. The second metal strip is coupled to a second connection point on the feed metal line through a second capacitive element. The feed metal line has a third connection point as a feeding point of the antenna element.

Abstract: A dipole antenna forms a distributed network filter.

Abstract: Disclosed herein is a dual-feed dual-polarized antenna element and a method for manufacturing the same. An embodiment dual-polarization antenna element includes four radiating elements and eight feed ports. The four radiating elements are arranged in a co-planar diamond pattern. The neighboring elements of the four radiating elements form four shared-element dipole antenna elements. Each of the four radiating elements is shared between two cross-polarized dipole antenna elements of the four shared-element dipole antenna elements. The eight feed ports are arranged in four cross-polarized dual-feed pairs respectively disposed on the four radiating elements. Each feed port of the four cross-polarized dual-feed pairs is operable to respectively excite one of the four radiating elements for a cross-polarized one of the four shared-element dipole antenna elements.

Abstract: An antenna system is provided that includes an antenna having an elongated conducting segment, such as a metal rod. An anisotropic metamaterial surrounds the elongated conducting segment of the antenna. The presence of the metamaterial remarkably expands the VSWR <2. An example antenna is a monopole antenna, such as a quarter-wavelength monopole antenna, surrounded by the metamaterial.

Abstract: A broadband quadruple helical circularly-polarized antenna for receiving GNSS signals comprises an excitation circuit and a set of quadruple spiral elements. Each quadruple spiral element consists of four conductors. Each conductor is a one spiral turn of the quadruple spiral element. Said conductors have equal winding angle. The winding angle of all conductors does not change in the same quadruple spiral element. Conductors of neighboring (longitudinally) quadruple spiral elements have different winding angles. The antenna provides a sharp drop in AP at angles near the horizon and a small AP level in the lower hemisphere.

Abstract: An antenna system includes a dual-polarized antenna, a main reflector, and an auxiliary reflector. The dual-polarized antenna includes a first antenna element and a second antenna element. The first antenna element and the second antenna element operate in a low-frequency band and a high-frequency band. The first antenna element and the second antenna element have different polarization directions. The main reflector is configured to reflect the electromagnetic waves in the low-frequency band. The auxiliary reflector is positioned between the dual-polarized antenna and the main reflector, and is configured to reflect the electromagnetic waves in the high-frequency band.

Abstract: A system includes an antenna, an impedance measurement circuit, an impedance tuning circuit, and a controller. The impedance measurement circuit can include a test current source that conveys a test current through the antenna, and a voltage sensor that measure a voltage across the antenna while the test current is conveyed through the antenna. The impedance tuning circuit can be coupled to the antenna leads and can include one or more reactive elements that can be selectively coupled to the antenna, or otherwise adjusted, to effect adjustment of the impedance connected to the antenna. The controller can: (i) use the impedance measurement circuit to obtain a measurement indicative of an impedance of the antenna; (ii) determine an adjustment to the impedance tuning circuit based on the obtained measurement; and (iii) cause the impedance tuning circuit to make the determined adjustment.

Abstract: A near-field electromagnetic induction antenna including: an electric antenna including a plate; a first feeding connection and a second feeding connection; and a magnetic antenna including a first coil and a second coil, wherein the first coil and the second coil are mutually coupled, wherein a first connection of the first coil is connected to the first feeding connection, wherein a second connection of the first coil and a first connection of the second coil is connected to the second feeding connection, and wherein a second connection of the second coil is connected to the plate.

Abstract: The invention provides a ceramic patch antenna structure which comprises a composite material base body, a radiation metallic layer, a grounding metallic layer and a signal feeding element. The composite material base body is composed of a high dielectric constant (K) material and a low K material, having a front surface, a rear surface and a through hole. The radiation metallic layer is provided on the front surface of the composite material base body. The grounding metallic layer is provided on the rear surface of the composite material base body. The signal feeding element has a head thereon, the head has a shaft extending from the bottom thereof and the shaft has a projection on a surface thereof. As the signal feeding element is screwed to the through hole, the projection of the shaft destroys an internal wall of the through hole to latch in the through hole.

Abstract: Provided is a plasma antenna. The plasma antenna includes a radiation portion formed by stacking a plurality of radiation disks generating plasma based on provided energy and radiating a signal using the generated plasma, an energy generation portion configured to provide the energy to at least one of the plurality of radiation disks, and a signal transmission portion configured to provide the signal to the at least one radiation disk provided with the energy. Therefore, it is possible to support multiple frequency bands.

Abstract: Multipath reception by an antenna is reduced by mounting the antenna on a semi-transparent ground plane that has a controlled distribution of layer impedance over a central region and a peripheral region. The central region includes a continuous conductive segment on which the ground element of the antenna is disposed. The distribution of the layer impedance over the peripheral region is configured by multiple conductive segments electromagnetically coupled by lumped circuit elements. A semi-transparent ground plane can be fabricated by depositing a metal film on a dielectric substrate and etching grooves into the metal film to form a desired pattern of conductive segments. Lumped circuit elements can be fabricated as discrete devices, surface mount devices, and integrated circuit devices. Various semi-transparent ground planes can be configured for linearly-polarized and circularly-polarized radiation.

Abstract: An acoustic wave element of the present disclosures has a piezoelectric substrate and an acoustic wave resonator S1 on a main surface of the piezoelectric substrate. The acoustic wave resonator S1 is one being divided into a first IDT electrode and a second IDT electrode which are electrically connected to the first IDT electrode. The first IDT electrode includes a first comb-shaped electrode on the signal input side and a second comb-shaped electrode on the signal output side. The second IDT electrode includes a third comb-shaped electrode on the signal input side and a fourth comb-shaped electrode on the signal output side. The direction of arrangement of the third comb-shaped electrode and the fourth comb-shaped electrode from the third comb-shaped electrode toward the fourth comb-shaped electrode is different from the direction of arrangement from the first comb-shaped electrode toward the second comb-shaped electrode.

Abstract: An antenna module for a mobile communication device is provided in the present disclosure. The antenna module includes a main board, a feed point and at least one ground point provided on the main board, a metal radiator opposite to the main board and electrically connected with the at least one ground point of the main board and a capacitive coupling feed part attached to a surface of the metal radiator and facing the main board, the capacitive coupling feed part being electrically connected to the feed point of the main board via a connecting member.

Abstract: An antenna system includes a system ground plane, a first antenna array, and a second antenna array. The first antenna array includes a first antenna element, a second antenna element, a third antenna element, and a fourth antenna element. The second antenna array includes a fifth antenna element, a sixth antenna element, a seventh antenna element, and an eighth antenna element. The second antenna array is disposed between the first antenna array and the system ground plane. The first antenna array has a first polarization direction. The second antenna array has a second polarization direction. The first polarization direction and the second polarization direction are orthogonal to each other.

Abstract: Provided is an antenna device including an antenna element configured to receive a broadcast wave and a signal that is superimposed on the broadcast wave and then is transmitted, a ground element having a predetermined length, the ground element being configured to be capable of adjusting a relative position with respect to the antenna element, and a feeding part to which the antenna element and the ground element are connected and from which the signal received by the antenna element is taken out.

Abstract: A multiple beam antenna system is described. The system may include a mounting structure, a first wireless access antenna, a second wireless access antenna, and a radio frequency lens. The first and second wireless access antennas may be mounted to the mounting structure. Columns of radiating elements of the first and second wireless access antennas may be aligned with the radio frequency lens. The radio frequency lens may be modular in a longitudinal or radial direction, or in both directions. The radio frequency lens may include a plurality of compartments arranged to form a first cylinder made up of concentric, coaxial cylinders and a plurality of dielectric materials in at least some of the plurality of compartments.

Abstract: An antenna array assembly comprises at least a first and second antenna element, each comprising at least one radiator element in a substantially parallel relationship to a respective ground plate, and an isolator bar disposed between the respective ground plates of the first and second antenna elements, the isolator bar being elongate having a cross-section comprising a T shape, the cross-section being across a long axis. The isolator bar comprises a support bar in contact with the ground plates forming the stem of the T shape, and a cross piece forming the top of the T shape. The cross piece of the isolator bar has a width in the cross-section of at least a quarter of a wavelength at an operating frequency of the antenna array, whereby to provide radio frequency isolation between the first and second antenna elements.