Abstract: A communication system is provided, including an antenna coupled to multiple RF paths, one or more matching networks, multiple switches, a controller configured to control the one or more matching networks and the multiple switches, and a look-up table coupled to the controller, the look-up table including characterization data according to frequency bands and conditions. The multiple switches are controlled to engage the signal path corresponding to the frequency band selected. The one or more matching networks are controlled by the controller to provide optimum impedance for the frequency band selected and a condition detected during a time interval with reference to the look-up table. Additional switches may be included to improve isolation.

Abstract: A communication antenna device (D), on board a motor vehicle, for communicating with an antenna of a portable device, includes: a communication antenna (A) including a first part (A1) having a maximum number of primary windings (E1MAX) and a second part (A2) having a maximum number of secondary windings (E2MAX), a microcontroller (10) electrically connected to the antenna (A), a first switching element (M1), for connecting the first part and/or the second part to the microcontroller (10), a second switching element (M2), for connecting a determined number of primary windings (E1i) of the first part to the microcontroller (10), a third switching element (M3), for connecting a determined number of secondary windings (E2j) of the second part to the microcontroller (10), and elements for controlling (20) the first, second and third switching elements.

Abstract: In an exemplary embodiment, an antenna architecture comprises a single aperture having both receive elements and transmit elements, where the single aperture has the performance of a dual-aperture but in about half the size. Moreover, in the case of an array with inclined elements, there is the need to interconnect a planar substrate with an inclined substrate at an angle. An exemplary single aperture comprises a metal core having a thick pass-through slot from a first side to a second side; connecting the inclined substrate to the first side of the metal core, and connecting a second substrate to the second side of the metal core. Furthermore, an RF signal is communicated between the first substrate and the second substrate in a contactless manner through the thick pass-through slot.

Abstract: An antenna system includes a low-band antenna configured for low-band frequencies and a high-band antenna configured for high-band frequencies. The low-band antenna is configured so that high-band frequencies have a high impedance while the high-band antenna is configured so that low-band frequencies have a high impedance. A transmission line can be used to couple both antennas together and the transmission line can be used to add phase delay to the impedance of the low-band and high-band antennas so that the corresponding frequencies that the antennas are not configured for are shifted toward an infinite impedance point on a Smith chart.

Abstract: A full-band antenna includes a dielectric layer, and a first and a second patterned conductive layer provided on the dielectric layer. The first patterned conductive layer includes a feed portion and a loop portion outwardly extended from the feed portion. The loop portion defines a plurality of radiation sections, between which a multi-coupling effect is created to form at least one variable frequency. The second patterned conductive layer includes a conductive portion and a short-circuit portion. The conductive portion forms at least one fixed frequency. The at least one variable frequency of the loop portion can be adjusted in its frequency distribution and frequency range by changing a width of the radiation sections and a spacing distance between the radiation sections.

Abstract: Provided is an antenna. In one aspect, the antenna includes a feed element having a first feed element end and a second feed element end, the first feed element end configured to electrically connect to a positive terminal of a transmission line. The antenna, in this aspect, further includes a loop antenna element having a first loop antenna element end and a second loop antenna element end, wherein the first loop antenna element end is coupled to the second feed element end and the second loop antenna element end is configured to electrically connect to a negative terminal of the transmission line. The antenna, of this aspect, further includes a monopole antenna element having a first monopole antenna element end and a second monopole antenna element end, wherein the first monopole antenna element end is coupled to the second feed element end.

Abstract: A portable motorized satellite television antenna system is connectable to a separate receiver. The satellite television antenna system can include an enclosure with at least a portion thereof comprising an electromagnetic wave permeable material. A reflector dish can be disposed inside of the enclosure. A low noise block converter can be disposed inside of the enclosure and configured to receive incoming satellite television signals. A first drive motor can be coupled to the satellite television antenna system such that at least one of an azimuth orientation and an elevation orientation of the dish can be adjusted. An electronic control system disposed inside of the enclosure and connected to the first drive motor to control automated aiming of the dish. The electronic control system and first drive motor can be powered solely by the separate receiver though a single conduit that spans between the satellite antenna system and the receiver.

Abstract: The present disclosure relates to impedance tuning of transmitting and receiving antennas.

Abstract: Methods and systems for extending a bandwidth of a multi-band antenna of a user device are described. A multi-band antenna includes a single radio frequency (RF) input coupled to a first loop antenna, the first loop antenna configured to provide a first resonant mode. The multi-band antenna also includes a second antenna parasitically coupled to the first loop antenna to provide additional resonant modes of the multi-band antenna. The second antenna is a T-monopole antenna with a base coupled to the ground plane, a first arm extending out from a first side of the base, a second arm extending out from a second side of the base and a folded arm extending back towards the second side of the base from a distal end of the second arm.

Abstract: An antenna device which includes a coil conductor and a booster conductor. The coil conductor is defined by wound loop-shaped conductors and includes a first opening at a winding center and two ends connected to a feeding circuit. The booster conductor includes a coupling conductor portion and a frame-shaped radiation conductor portion. The coupling conductor portion includes a second opening overlapped at least partially by the first opening, is split in a portion thereof by a slit, and is electromagnetically coupled to the coil conductor. The frame-shaped radiation conductor portion includes a third opening and is connected to the coupling conductor portion.

Abstract: An antenna structure includes an in-line portion for radiating electromagnetic energy signals in low and high frequency ranges. The in-line portion may be constructed to provide improved control beam width stability of a high-frequency, antenna radiating element. The antenna structure includes one or more shaped structure configured to improve the beam width stability and cross-polarization of one or more high-frequency elements, and to shift resonance from the high-frequency elements to a range that is below the range of a low-frequency, antenna radiating element.

Abstract: One or more antennas within an earphone arrangement used in an electronic device includes a plurality of coaxial cables, a first antenna unit, a second antenna unit, and a third antenna unit. The coaxial cables carry radio frequency (RF) signals of different frequency bands. The first antenna unit, the second antenna unit, and the third antenna unit each include a radiating member. Each radiating member can receive and transmit RF signals of at least one frequency band, and the coaxial cables carry the RF signals to the device for processing.

Abstract: A planar antenna with widened bandwidth comprises at least one first conducting element disposed above an earth plane and separated from the latter, and means for exciting said at least first conducting element, configured to excite two distinct orthogonal resonant modes, wherein said at least first conducting element is embodied by a substrate comprising at least one thin layer of an anisotropic material with relative permeability of greater than 10 for 2 GHz. The antenna applies notably to mobile communications terminals.

Abstract: A mobile wireless communications device may include a portable housing, a printed circuit board (PCB) carried by the portable housing, a wireless transceiver carried by the PCB, and an antenna connected to the transceiver and carried by the PCB. The mobile wireless communications device may further include at least one director element for directing a beam pattern of the antenna. More particularly, the at least one director element may include an electrically conductive main branch carried by the portable housing, and an electrically conductive connector portion extending between the main branch and the PCB.

Abstract: Provided are an antenna-device substrate which is capable of flexibly adjusting multiple resonance frequencies and can also be made small and thin and an antenna device provided with the same. The present invention is provided with a substrate main body (2), first to third elements (3 to 5), a ground plane (GND), and a ground connection pattern (6), wherein the first element is provided with a feed point (FP) at the base end and extends while having a power feeding-side passive element (P0), a first connecting portion (C1), and an antenna element (AT); the second element extends while being connected to the first element via a second connecting portion (C2); and the third element extends while being connected to the first element via a third connecting portion (C3).

Abstract: Quad-slot antenna structures of user devices and methods of operating the user devices with the quad-slot antenna structures are described. One apparatus includes a RF feed coupled to a quad-slot antenna, including a first slot and a second slot and a third slot and a fourth slot. The first slot and the second slot are driven elements and the third slot and the fourth slot are parasitic elements.

Abstract: Provided is an antenna device which is capable of flexibly adjusting multiple resonance frequencies. The antenna device is provided with a substrate main body (2), a ground pattern (GP), a first element (3), a second element (4) and a third element (5).

Abstract: The present invention is related to a communication device which includes a ground element and an antenna system. The ground element includes a main ground plane and a protruded ground plane. The antenna system includes a first antenna and a second antenna. The first antenna includes a metal radiation element and is adjacent to the main ground plane of the ground element. The second antenna is a slot antenna and is formed in the protruded ground plane of the ground element. The protruded ground plane is adjacent to the first antenna.

Abstract: Quad-slot antenna structures of user devices and methods of operating the user devices with the quad-slot antenna structures are described. One apparatus includes a RF feed coupled to a quad-slot antenna, including a first slot and a second slot and a third slot and a fourth slot. The first slot and the second slot are driven elements and the third slot and the fourth slot are parasitic elements.

Abstract: Disclosed is a micropatch antenna comprising a radiating element and a ground plane separated by an air gap. Small size, light weight, wide bandwidth, and wide directional pattern are achieved without the introduction of a high-permittivity dielectric substrate. Capacitive elements are configured along the perimeter of at least one of the radiating element and ground plane. Capacitive elements may comprise extended continuous structures or a series of localized structures. The geometry of the radiating element, ground plane, and capacitive elements may be varied to suit specific applications, such as linearly-polarized or circularly-polarized electromagnetic radiation.