Abstract: An antenna system for a radio frequency identification system comprising: (a) a base; (b) a first patch antenna disposed on the base and having a circular polarization and adapted to convert between electrical signals and electromagnetic fields; and (c) a second patch antenna disposed on the base and having a circular polarization and adapted to convert between electrical signals and electromagnetic fields, the second antenna being disposed at a distance from the first antenna to define a region between the first and the antenna, the second patch antenna being positioned relative to the first patch antenna such that the electromagnetic fields of the two antennas are substantially opposing in the region.

Abstract: Disclosed herein is a multiband antenna for vehicles. The multiband antenna includes a Printed Circuit Board (PCB), at least one radiation unit, and a feeding unit. The PCB is formed within a radome that protects the antenna. The at least one radiation unit is formed on the PCB to be optimized as a Hilbert type meander line composed of a single pattern, and is configured to generate multiband resonant frequencies. The feeding unit is configured to apply signals to the radiation unit.

Abstract: An antenna for a wireless device is provided. The antenna mounts on a substrate such as a printed circuit board. The antenna includes a carrier having sidewalls with inside surfaces defining an internal recess. A conductive trace resides on the carrier. The conductive trace having a first end and a second end opposite the first end with at least one lead extending from an end and extending the sidewall. The lead terminates in a hook that traversing the sidewall and has a portion extending along the inside surface of the internal recess. A locking clip is sized to fit in the internal recess and frictionally lock the portion between an outside surface of the locking clip and the inside surface of the internal recess such that the locking clip locks the portion, the at least one hook, the at least one lead, and the conductive trace in position on the carrier.

Abstract: A wireless apparatus has a main housing, a movable housing relatively extended to the main housing. The main housing contains a first PCB with a first layer being fully laid metal material. The movable housing contains a second PCB with a second layer being fully laid metal material. An insulation route is laid on the second layer and led to the border of the second layer. A connection component electronically connects the first layer and the second layer. When the wireless apparatus is operated at wireless communication, the cooperation of the first layer, the second layer, the insulation route and the connection component adjusts the electrical characteristic of the first and second PCBs for eliminating a parasitic effect being caused of movement of the first and second PCBs and increasing gain of the antenna of the wireless apparatus.

Abstract: Ground based GPS antennas for differential applications may be subject to intentional or other interference signals incident at low elevation angles. Described GPS antenna systems are usable to provide an antenna pattern having a vertically-steerable null. An array of vertically spaced radiator units having omnidirectional azimuth characteristics provides a primary reception pattern. Vertically intermixed radiator units employed on a separate or shared basis provide an auxiliary reception pattern. By subtractively combining the auxiliary pattern with the primary pattern and adjusting the relative signal level of the auxiliary pattern a vertically-steerable pattern null is provided. The antenna system may include an adaptive control system responsive to an antenna output signal to derive a steering signal to adjust the relative signal level of the auxiliary pattern to steer the vertically-steerable null to provide interference suppression. Antenna systems and methods are described.

Abstract: A frequency multiband antenna includes a photonic bandgap material having at least one band gap, one single periodicity defect of the bandgap material so as to produce several narrow bandwidths within the at least one band gap of the bandgap material, and an excitation device capable of transmitting and/or receiving electromagnetic waves within the narrow bandwidths.

Abstract: A wireless communication device includes an antenna for wireless communication with a remote interrogator. Several embodiments are disclosed to increase the options available to designers of wireless communication devices. In some embodiments, the antenna is a quarter wavelength long with one end of the antenna being grounded to provide desired impedance matching characteristics. The position of the ground plane relative to the antenna is also varied between embodiments. The connection from a wireless communication chip to the antenna is also varied between embodiments to provide alternate structures.

Abstract: An antenna device has a dielectric body with a convex surface and a concave surface. The antenna device further has a flexible printed circuit board disposed on the convex surface.

Abstract: The present invention provides a MIMO antenna structure and design. A single dipole antenna stands at the center of a triangle which is formed by three PIFAs antennas, and the three PIFA antennas has equal squint angle relative to the neighbors, that is there is 120° sector angle between any two PIFA axes of three such that the dipole and the other PIFAs forms a tetrahedron. The MIMO antenna structure of the present invention is simpler in mechanics but high efficiency in performance.

Abstract: An antenna that includes, in at least one embodiment, first and second radiating elements each having a substantially conical radiating surface. Each radiating surface may be substantially linearly conical or nonlinearly conical. The radiating surfaces are substantially aligned coaxially, and the radiating elements are positioned on opposing sides of a signal launching region, extending in opposing directions from the signal launching region. A signal feed extends through the first radiating element, thereby positioning a signal launch point between the first and second radiating elements in the signal launching region proximate vertices of the first and second radiating surfaces. The first and second radiating elements have first and second included angles, respectively, that are each no less than about 40 degrees.

Abstract: A magnetic core member, an antenna module, and a portable communication terminal having this, which have a configuration capable of satisfying enhancement of communication characteristics of antenna coils as well as their sufficient electromagnetic shielding function from a shield plate. A magnetic core member (4) is disposed between an antenna substrate having antenna coils (11), (12) formed therein and a conductive shield plate (3), and is formed by filling an insulating material (30) with a magnetic powder (31). The magnetic core member (4) has a two-layered structure including a first layer (4A) and a second layer (4B), thereby making a filling rate of the magnetic powder (31) in the first layer (4A) be lower than that of the magnetic powder (31) in the second layer (4B) so that a first surface (4a) on a side opposed to the antenna substrate (2) and a second surface (4b) on a side opposed to the shield plate (3) have magnetic properties different from each other.

Abstract: The present invention relates to a broadband non-resonant antenna device for wireless transmission of information using electromagnetic signals, comprising a metal sheet layer, forming a plane, with a slotline that comprises a first part and a second part. The side of the second part that is the most distant from the first part transcends into a widening open-ended tapered slot in the metal sheet layer. The device additionally comprises a feeding line in the metal sheet layer. The feeding line comprises a feeding part, with a first end and a second end, and gaps separating the feeding part from the surrounding metal sheet layer by a certain distance, where the slotline is intersected by the feeding line.

Abstract: A communication system including an antenna array with feed network coupled to communication electronics. In one example, a communication subsystem comprises a plurality of antennas each adapted to receive an information signal and a plurality of orthomode transducers coupled to corresponding ones of the plurality of antennas, each OMT is adapted to provide at a first component signal having a first polarization and a second component signal having a second polarization. The communication subsystem also comprises a feed network that receives the first component signal and the second component signal from each orthomode transducer and provides a first summed component signal at a first feed port and a second summed component signal at a second feed port, and a phase correction device coupled to the first and second feed ports and adapted to phase match the first summed component signal with the second summed component signal.

Abstract: A multiple-element antenna for a wireless communication device is provided. The antenna comprises a first antenna element having a first operating frequency band and a floating antenna element positioned adjacent the first antenna element to electromagnetically couple to the first antenna element. The floating antenna element is configured to operate in conjunction with the first antenna element within a second operating frequency band. A feeding port connected to the first antenna element connects the first antenna element to communications circuitry and exchanges communication signals in both the first operating frequency band and the second operating frequency band between the multiple-element antenna and the communications circuitry. In a wireless mobile communication device having a transceiver and a receiver, the feeding port is connected to both the transceiver and the receiver.

Abstract: An antenna comprises a lower section, an upper section, and a junction connecting them to each other. The junction has a key and a keyway to permit joining them only one way. In one embodiment, a whip assembly is joined to a mount assembly by a keyed junction.

Abstract: The invention relates to a built-in antenna module for a wireless communication terminal. The module includes at least one radiator. The module also includes a base having an inner space, disposed on a board of a terminal body, and having the radiator on an outer surface thereof to enable electric connection between an end of the radiator and the board of the terminal body. The module further includes an operator disposed in the inner space of the base for indicating an incoming call when power is supplied. The invention efficiently utilizes a limited space in the terminal body with enhanced capabilities of the antenna.

Abstract: A mobile satellite antenna system has a first portion that includes an elevation mechanism, and a second portion that includes a dish with a dish back support structure. These portions can be readily connected or disconnected by a set of quick-connect fasteners that selectively fasten the elevation mechanism of the first portion to the dish back support structure of the second portion. Both portions of the satellite antenna system can be separately stored and transported in containers.

Abstract: The wireless communication device contains at least one conductive tab that provides an antenna. The tab(s) form a pole antenna, and the tabs may also be attached across a slot to form a slot antenna. The tab(s) may be attached across a slot created in a package to form a slot antenna, or the tab(s) may be attached to a slot that is created as part of the wireless communication device to form a slot antenna. The tab(s) and/or the slot may also contain an adhesive material to attach the wireless communication device to a package, container or other material. More than one slot may be provided to form a circularly polarized antenna. The carrier may be a conductive material in which tabs are formed as part of the carrier before the wireless communication device is attached. The wireless communication device may have an asymmetrical antenna arrangement.

Abstract: A circular polarized antenna has a group of conductor lines that comprise a planar metal conductor, and a feeding point connected to a part of the conductor lines. When a current to be induced on the conductor lines is projected onto two mutually-perpendicular axes to define projections and arguments therebetween, a ratio between absolute values of the projections is 0.7 to 1.3 and an absolute value of a difference between the arguments is 80 to 100 degrees, and a reactance component of an impedance of the feeing point is nearly zero.

Abstract: A multi-band antenna operates at a low frequency and a wider high frequency bands, which is formed as an elongated shape defining opposite ends. The multi-band antenna has a slot opened at a long edge and being extending to one end thereon. The wide range of the opening of the slot is larger than the extension length of the slot. A feeding conductor with a feeding point is arranged to adjoin the opening of the slot. The multi-band antenna resonates the low frequency band and a first high frequency. The slot obtains a second high frequency band higher than and partially overlapped the first high frequency. So the multi-band antenna has the low frequency bands and the better high frequency which includes several high frequency bands.