Abstract: Disclosed a antenna apparatus including: a first antenna having a fixed directivity for receiving a signal in a first frequency band; a second antenna capable of switching a directivity thereof at a time of receiving a signal in a second frequency band; a judgment section to judge which of the signal in the first frequency band and the signal in the second frequency band a television broadcast signal corresponding to a tuned channel is; and a selection section to select the first antenna as an antenna to receive the television broadcast signal corresponding to the tuned channel when the television broadcast signal is judged to be the signal in the first frequency band, and to select the second antenna as the antenna to receive the television broadcast signal when the television broadcast signal is judged to be the signal in the second frequency band.

Abstract: The invention relates to antenna systems used in local wireless communications networks. The antenna system includes planar directional antennas (1), each of which is made as a dielectric plate (2), with an active element (5) of the antenna (1) mounted on said plate. The surface of the plate (2) that faces the active element is metallized and serves as a reflector (6) of the antenna (1). The plates (2) are interconnected along their edges in such a way as to form lateral facets of a hollow frame (9) of the device. The end face (10) is made as a dielectric plate (11) with the external surface metallized and can also contain an active element (12) of the antenna (13). An antenna commutation switch (14) connected to a switch control unit (16) and to active elements (5) of the antennas (1) is mounted on the inner surface of the end face (10) of the frame (9). Active element (5) is mounted on said plate by means of pins cut in the body of the active element (5) and bent during mounting.

Abstract: Some demonstrative embodiments include devices, systems and/or methods of multiple-input-multiple-output wireless communication. Some embodiments include an apparatus having a wireless receiver to receive a multiple-input-multiple-output wireless transmission, the receiver including a set of antenna elements having different polarizations to receive a respective set of wireless signals of the multiple-input-multiple-output wireless transmission over a respective set of different communication channels, wherein the set of antenna elements includes a first number of antenna elements; a radio-frequency module to handle a second number of wireless received signals, wherein the second number is smaller than the first number; and a selector to selectively provide the radio-frequency module with a subset of the set of wireless signals including the second number of signals according to at least one selection criterion. Other embodiments are described and claimed.

Abstract: A frequency tunable internal antenna includes a substantially planar radiating element with a feed point and a switching element all coupled to the radiating element. The radiating element includes a plurality of slots configured to form a first branch and a second branch within the radiating element. The plurality of slots are configured relative to the feed point such that in operation the first branch acts as a first resonator having a first native electrical length and the second branch acts as a second resonator having a second native electrical length. The switching element is configurable in a first position and a second position, where in the first position the switching element connects to a portion of the first branch to decrease the electrical length of the first resonator, and in the second position the switching element connects to a portion of the second branch to decrease the electrical length of the second resonator.

Abstract: An antenna includes a first radiating element (2a), a second radiating element (2b), a third radiating element (2c), a first switch element (7-1) for switching an electrical connection between the first radiating element (2a) and the second radiating element (2b), a second switch element (7-2) for switching an electrical connection between the second radiating element (2b) and the third radiating element (2c). The first radiating element (2a), the second radiating element (2b) and the third radiating element (2c) are conductor patterns formed on a dielectric member (1) that is separate from a printed circuit board (4) and has a dielectric constant larger than that of the printed circuit board (4).

Abstract: An antenna for controlling a radiation pattern includes a first substrate; a first radiator formed in one surface of the first substrate; a second radiator formed in other surface of the first substrate; and a tuning part which controls a radiation pattern by changing a size of an overlapping region of the first radiator and the second radiator disposed with the first substrate interposed therebetween according to an external control signal. The tuning part includes a plurality of sub-radiators arranged by at least one side of the first radiator or the second radiator, and a plurality of switches. Accordingly, the beam radiation pattern can be easily controlled through the switch control.

Abstract: For determining connection of a TV broadcast receiver for receiving terrestrial broadcasts to a smart antenna with multiple receiving directions having a current active receiving direction, the receiver sends, to the connected antenna, a control signal to change the current active receiving direction to a further active receiving direction, so as to determine that a smart antenna is connected to the receiver if intensity of a television broadcast signal received and measured in the further active receiving direction is significantly varied from that in the current receiving direction. If the intensity of the television broadcast signal in the further active receiving direction is not significantly varied, the receiver determines that a smart antenna is disconnected from the receiver, and displays a message indicating the disconnection to a user. Thus, this receiver can automatically determine the kind of connected antenna, and display information about the connected antenna to the user.

Abstract: There are provided a transmitter/receiver circuit and a transmission/reception method that can reduce the insertion loss of a circuit in a hybrid operation and are suitable for reducing the cost, size, and power consumption. An antenna switch 119 includes attenuation filters 201 to 203 for attenuating the frequency bands corresponding to a plurality of receiving systems, e.g., the frequency band of an 800 MHz band system, the frequency band of a 2 GHz band system, and GPS reception frequency components. These filters 201 to 203 are connected between a primary (main) antenna connection terminal T204 and a first switch group SWG201 through connection switches 204 to 206.

Abstract: Certain embodiments of the invention may be found in a method and system for antenna selection diversity with prediction. An antenna diversity system may use information that it has stored on the antenna selection process in previous frames to predict the starting receiving antenna and the starting transmission antenna for the next frame. The prediction may be based on which antennas were selected in previous frames or may be based metrics associated with performance of the antennas. Prediction may be based on a majority polling scheme of previously selected antennas in a determined number of previous frames. Prediction may also be based on a weighted sum of at least one selection metric for all antennas in a determined number of previous frames. Antenna prediction provides a significant performance improvement by reducing the processing and operational overhead in cases where a transmit or a receive antenna dominates.

Abstract: Method and apparatus for selectively connecting one of an internal and an external antenna to an RF signal component of a wireless modem use a sensor mounted on the circuit board of the wireless modem. The sensor senses the presence of a connector of the external antenna, and issues a corresponding sensor output signal to a controller that controls a switch in order to alternatively connect one of the internal and external antennas to the RF signal component.

Abstract: There is provided with an antenna device includes a conductive ground plane; an antenna including a radiating element; at least one variable capacitor having one end connected to the conductive ground plane; a plurality of switch elements having one ends connected to the other end of said at least one variable capacitor and other ends connected to the antenna at different locations; a switch controlling unit configured to control an ON/OFF state of each of the switch elements; and a capacitor controlling unit configured to control a capacitance of said at least one variable capacitor.

Abstract: Methods and apparatus to reconfigure an antenna for use with mixed wireless networks are described. In one embodiment, a switch is coupled between a first portion and a second portion of an antenna to cause the antenna to tune to a plurality of radio frequency bands. Other embodiments are also described.

Abstract: The present invention relates to a multiple-port dual-band antenna system and the associated interface formed by DPDT or SPDT switches, that can be integrated on one and the same multi-layer structure.

Abstract: A wireless signal transceiver device for receiving wireless signals of multiple frequency bands has an antenna, a radio frequency signal processing unit, an antenna switch module, a primary antenna matching circuit, and an auxiliary antenna matching module. The radio frequency signal processing unit outputs a control signal according to the frequency band of the wireless signal processed. The antenna switch module has a first signal terminal, and a plurality of second signal terminals coupled to the radio frequency signal processing unit, and switches a signal connection between the first signal terminal and one second signal terminal of the plurality of second signal terminals according to the control signal. The primary antenna matching circuit roughly matches the antenna, and the auxiliary antenna matching module matches the antenna with the primary antenna matching circuit based on the frequency band of the wireless signal processed by the radio frequency signal processing unit.

Abstract: An electronically controlled monolithic array antenna includes a transmission line through which an electromagnetic signal may be propagated, and a metal antenna element defining an evanescent coupling edge located so as to permit evanescent coupling of the signal between the transmission line and the antenna element. The antenna element includes a conductive ground plate; an array of conductive edge elements defining the coupling edge, each of the edge elements being electrically connected to a control signal source, and each of the edge elements being electrically isolated from the ground plate by an insulative isolation gap; and a plurality of switches, each of which is selectively operable in response to the control signal to electrically connect selected edge elements to the ground plate across the insulative isolation gap so as to provide a selectively variable electromagnetic coupling geometry of the coupling edge.

Abstract: Aspects of a method and system for a configurable antenna in an integrated circuit package are provided. In a hybrid circuit comprising an integrated circuit bonded to a multi-layer package, one or more antenna parameters may be adjusted by configuring a plurality of antenna elements via one or more switching elements. In this regard, the antenna elements and/or the switching elements may be within and/or on the multi-layer package and/or within the integrated circuit. The switching elements may be MEMS switches on and/or within the IC and/or the multi-layer package. The IC may be bonded or mounted to the underside of the package and signals may be communicated between the IC and the package via one or more solder balls. The IC may comprise suitable logic, circuitry, and/or code for configuring the antenna elements. The antenna elements may be configured based on desired polarization, antenna gain, and/or frequency.

Abstract: A system (100) and method (400) for improving Radio Frequency (RF) Antenna Simulation is provided. The method can include determining (402) a proximity of an antenna (250) to a scattering structure (210), determining (410) a switching distance to the scattering structure that establishes when to switch the antenna on (416) and off (418) from a composite antenna pattern to a free space antenna pattern, and predicting RF coverage of the antenna responsive to the switching. The switching distance can be a function of a material type and a surface geometry of the scattering structure and a wavelength of the antenna. The method can also include evaluating a sensory mismatch in the antenna, and using a composite antenna pattern corresponding to the sensory mismatch.

Abstract: A wireless communication device using a single spiral inductor antenna and a signal receiving/transmitting method thereof operated on multi-band are provided. The single spiral inductor antenna is designed to have a plurality of different inductance paths. Different inductance values are inducted with signal paths switched by a plurality of switches so as to meet the requirements of multi-band operation. As the circuit structure of the single spiral inductor antenna is used, the circuit area is reduced effectively.

Abstract: The present invention provides a mobile terminal device, an antenna switching method, and a program capable of realizing appropriate antenna switching compared to the conventional technique by coping with various use states in the antenna switching of a mobile phone including a plurality of antennas. A mobile terminal device including a plurality of antennas and performing antenna switching includes: a device state detection unit for detecting a device state of the mobile terminal device; an accessory connection detection unit for detecting an accessory connected to the mobile terminal device; a communication state detection unit for detecting a communication state of the mobile terminal device; and an antenna switching unit for selecting an appropriate antenna from the plurality of antennas and switching to it based on respective detection results detected by the device state detection unit, the accessory connection detection unit and the communication state detection unit.

Abstract: The present invention relates to a transmission/reception antenna with diversity of radiation comprising on a substrate at least a first and a second radiating elements connected by a network of feeder lines to a transmission/reception circuit of electromagnetic signals, wherein the network is constituted by a first feeder line connected to a first radiating element and by a set of two second feeder lines each connected by means of a switching element to the second radiating element in such a manner as to supply the two radiating elements in phase or in phase opposition, the set of the two second feeder lines being connected to the first feeder line by a third feeder line, the first and third feeder lines being connected by a feeder line common to the transmission/reception circuit of electromagnetic signals.

Abstract: A portable wireless device is capable of maintaining performance of an antenna without being affected by the state of the housing fitted with the antenna even if the housing is rotated around a rotation axis thereof by a predetermined angle. A portable wireless device 10 comprises an upper casing 21 provided with a balanced antenna 43 and a facing section 22a to be faced with the upper casing 21. The portable wireless device has two states including a first facing state in which the housing is in face to face relationship with the facing section and a second facing state in which the housing rotated around a rotation axis thereof by a predetermined angle is in face to face relationship with the facing section. The balanced antenna 43 has a shape symmetrical about a rotation axis 23b that is a rotation axis of the upper casing.

Abstract: A directional antenna and a portable electronic device using the same are provided. The directional antenna includes L-shaped radiator, L-shaped oscillator, and L-shaped reflector and it is preferred that the directional antenna is positioned at corners of the substrate. The L-shaped radiator is made resonant by the L-shaped oscillator and has higher gain to maximize performance of signal transmission. The directional antenna achieves signal transmission in a specific direction over a long distance by the L-shaped reflector. In addition, with the gravity sensor, the processor and the switches, the directional antenna is automatically adjusted to a predetermined direction to transmit and receive signals even through orientation of the electronic device is changing at any time.

Abstract: An automatic antenna identification system is provided that includes a connector to which a plurality of different antennas tuned to different respective frequencies or frequency bands may be connected. In addition, the system includes circuitry that automatically identifies which antenna of the plurality of different antennas is connected to the connector based on the respective frequency or frequency band of the antenna.

Abstract: A circuit board for wireless communications includes communication circuitry for modulating and/or demodulating a radio frequency (RF) signal and an antenna apparatus for transmitting and receiving the RF signal, the antenna apparatus having selectable antenna elements located near one or more peripheries of the circuit board. A first antenna element produces a first directional radiation pattern; a second antenna element produces a second directional radiation pattern offset from the first radiation pattern. The antenna elements may include one or more reflectors configured to provide gain and broaden the frequency response of the antenna element. A switching network couples one or more of the selectable elements to the communication circuitry and provides impedance matching regardless of which or how many of the antenna elements are selected.

Abstract: An adaptive antenna apparatus comprises M receiving circuits, and N antenna elements, N being larger than M. The N antenna elements constitute a plurality of sets of partial array antennas each including M antenna elements among the N antenna elements, and a straight line passing through feeding points of two of the antenna elements included in any one of the partial array antennas has a different direction from a further straight line passing through feeding points of two of the antenna elements included in any one of the other partial array antennas. A control means adaptively controls the receiving circuits to adjust at least one of an amplitude and a phase of each radio frequency signal, and adaptively controls an antenna switching means to connect the antenna elements included in one of the plurality of sets of partial array antennas to their corresponding receiving circuits.

Abstract: A multiple-input multiple-output (MIMO) antenna and an antenna system using the same are provided. The MIMO antenna includes a plurality of antenna elements in which a feeding unit is formed at one end, and another end is connected to a ground, and a connection unit which connects the antenna elements.

Abstract: Information equipment according to an embodiment includes a display housing with a display unit, a first radio communication antenna disposed at an end part of the display housing, a second radio communication antenna using a frequency band adjacent to or overlapped with that of the first radio communication antenna, and a third radio communication antenna disposed at an end part between the first and the second radio communication antennas, and uses a frequency band not adjacent to nor overlapped with those of the first and the second radio communication antennas.

Abstract: An antenna apparatus for a mobile communications terminal and its operation method in which the length of an antenna can be varied according to the changes in the usage environment. The antenna requires minimal space for installation, and can support multiplexing of frequency bands, such as tri-band or quad-band capabilities, so as to reduce the deterioration of signal transmission and reception sensitivity caused by changes in the usage environment, such as effects from the user's hand that holds the terminal, an act of opening and closing of a folder portion of the terminal, and the like.

Abstract: There is provided an antenna device for use with a portable terminal, which can be used in different frequency bands by combining antenna characteristics. Whip antenna is electrically connected to power feeder through contact member, and resonates in a UHF band or higher when extended. Coiled antenna is electrically connected to power feeder through frequency filter mounted on device board. Frequency filter is set to a low impedance in a VHF band to supply electric power to coiled antenna. With this arrangement, external whip antenna is excited in the UHF band or higher, and built-in coiled antenna is mainly excited in the VHF band. The antenna device is thus capable of sending or receiving radio waves in a wide frequency band.

Abstract: A frequency reconfiguration array antenna includes a metal plate and a plurality of antenna elements. The antenna element includes a plurality of radiators and at least one switch for connecting the radiators, and a gain of at least one frequency bandwidth from among the plurality of frequency bandwidths reconfigured by the antenna elements is higher than gains of other frequency bandwidths.

Abstract: An antenna device for a portable terminal, in which a first radiator is installed within the portable terminal, a second radiator is elongated lengthwise and installed to be retractable into and extendable from the portable terminal, and a switch portion has at least one plate spring and connects a communication circuit portion of the portable terminal selectively to the first radiator or the second radiator. When the second radiator is retracted into the portable terminal, the communication circuit portion is connected to the first radiator through the at least one plate spring, and when the second radiator is extended from the portable terminal, the communication circuit portion is connected to the second radiator through the at least one plate spring.

Abstract: An antenna arrangement for a portable communication apparatus includes a main antenna connectable to an antenna input, a receive antenna connectable to an antenna output, an external antenna connector for receiving a terminal of an auxiliary antenna, an antenna detector arranged to detect the terminal when it is connected to the external antenna connector, a switch adapted to connect either the receive antenna or the external antenna connector to the antenna output, and a DC voltage network. The DC voltage network is connected to the switch and is arranged to automatically control the switch to connect the external antenna connector to the antenna output and disconnect the receive antenna from the antenna output, when the terminal is connected to the external antenna connector.

Abstract: An antenna apparatus 1 has an antenna substrate 21 composed of a separator 23 and electrolyte layers 24a and 24b disposed on both surfaces of the separator 23; an antenna pattern 22a disposed on the solid electrolyte layer 24a; and an antenna pattern 22b disposed on the solid electrolyte layer 24b. The antenna patterns 22a and 22b are made of an electroconductive plastic. When a DC voltage is applied between the antenna patterns 22a and 22b, ions can be doped to one of the antenna patterns 22a and 22b, whereas ions can be undoped form the other of the antenna patterns 22a and 22b. In other words, one of the antenna patterns 22a and 22b can become a conductor, whereas the other thereof can become an insulator.

Abstract: A printed monopole smart antenna is provided. The smart antenna includes a monopole antenna having a plane for receiving and transmitting a signal, two conductors for directing and/or reflecting the signal to the monopole antenna respectively, and a circuit device electrically connected between the first and second conductors, for selectively switching the first and second conductors to determine an operation mode of the smart antenna. The smart antenna further has at least a groove in the ground for concentrating the current distribution and solving the influence of the antenna gain to the ground size. The sequence of the antenna pattern of the smart antenna is randomly arranged, depending on user's situation. When a plurality of printed monopole smart antennas are disposed on different directions of the WLAN AP/router, the omnidirectional radiation pattern will be obtained and the antenna gain will be increased.

Abstract: A radio communication system including multiple antenna elements divided into subgroups of at least two antenna elements, and multiple line cards operable to employ spatial processing techniques. Each line card is coupled to a subgroup such that the line card may transmit and receive signals using the subgroup. A base station for use in a radio communication system includes one or more line cards. Each line card includes an antenna interface used to couple the line card to a subgroup of multiple antenna elements, a radio frequency component coupled to the antenna interface, and a signal processing component coupled to the radio frequency component such that the line card is operable to transmit and receive radio frequency communications. A method for providing increased capacity in a radio communication system includes dividing an antenna array, creating N subgroups of antenna elements, and for each of the N subgroups of antenna elements, coupling a line card to the subgroup of antenna elements.

Abstract: There is disclosed an antenna for reception of circularly polarized satellite radio signals. The antenna comprises at least one two-dimensional or three-dimensional antenna conductor structure connected with an antenna output connector. The multi-dimensional antenna conductor structure is configured so that it comprises a plurality of antenna conductor sections, which, with reference to a spatial reference point (z) common to the antenna conductor sections, are disposed in pairs, symmetrically and extending in the same direction.

Abstract: Embodiments of the invention may provide for a CMOS antenna switch, which may be referred to as a CMOS SPDT switch. The CMOS antenna switch may operate at a plurality of frequencies, perhaps around 900 MHz, 1.9 GHz and 2.1 GHz according to an embodiment of the invention. The CMOS antenna switch may include both a receiver switch and a transmit switch. The receiver switch may utilize a multi-stack transistor with body substrate switching and attachment of external capacitor between drain and gate to block high power signals from the transmit path as well as to maintain low insertion loss at the receiver path. Exemplary embodiments of the CMOS antenna switch may provide for 38 dBm P 0.1 dB at multi bands (e.g., 900 MHz, 1.8 GHz, and 2.1 GHz). In addition, ?60 dBc second and third harmonic performance up to 30 dBm input, may be obtained according to example embodiments of the invention.

Abstract: An antenna apparatus capable of main beam direction switching is provided that achieves high gain with a small, planar configuration. Rhombic antenna sections composed of linear elements 101a through 101d, 102a through 102d, and 103a through 103d are arranged in the same plane, and the rhombic antenna sections are connected by linear linking elements 104a through 104d. Linear detour elements 105a and 105b are connected to the pair of vertices of the rhombic antenna sections arranged at each end. Feed points 106a and 106b are provided at the other opposite two pairs of vertices of any of the rhombic antenna sections, and the opposite vertices of the other rhombic antenna sections are connected by linear elements. A plate reflector is arranged at a distance h from, and parallel to, the surface on which the rhombic antenna elements are arranged.

Abstract: A portable wireless unit having high antenna performance, which comprises: a first case having a first antenna element, a second antenna element and a second feeding section; a second case having a third antenna element, a third feeding section and a circuit board provided with a ground pattern; and a coupling section consisting of first and second electrically connected conductive coupling elements and coupling the first case and the second case to be extended and housed freely. The second coupling element is provided in the first case while being connected electrically with the first antenna element, the first coupling element is provided in the second case while being connected electrically with the first feeding section, and the first antenna element, the coupling section, and the ground pattern are operated as a dipole antenna.

Abstract: An antenna device for a portable radio communication device operable in at least a first and a second frequency band, and comprising a first electrically conductive planar radiating element (10) having a feeding portion (12) connectable to a feed device (RF) of the radio communication device, and a second electrically conductive planar radiating element (20) having a grounding portion connectable to ground. A controllable switch (30) is arranged between the first and second radiating elements for selectively interconnecting and disconnecting the radiating elements, wherein the state of the switch being controlled by means of a control voltage input (VSwitch). A first filter (16) is arranged between the feeding portion and the control voltage input, wherein the first filter is arranged to block radio frequency signals.

Abstract: A method for determining an array space of an array antenna by using a genetic algorithm and an array antenna having a soft structure with irregular array spacing are disclosed. The array antenna having a sofa structure with irregular array spacing, includes: a plurality of radiation elements having an inclined angle based on a horizontal plane and arranged with irregular array spacing for radiating and receiving an radio wave; a plurality of phase shifters for amplifying radiation signals radiated from the plurality of radiation elements and receiving signals received from the plurality of radiation elements, and controlling phases of the radiation signals and the receiving signals; and a radio wave signal coupler for dividing a transmitting signal to the radiation signals, transferring the divided radiation signals to the plurality of phase shifters and coupling the receiving signals from the plurality of phase shifters.

Abstract: A Multiple Input Multiple Output (MIMO) antenna system adaptable to an environmental multiplicity is provided. A MIMO antenna system includes a first antenna element, a second antenna element, a receiver for receiving at least one of different polarized signals through the first antenna element, a channel estimator for estimating a channel using a signal received via the receiver and a signal received via the second antenna element, and a correlation comparator for controlling the receiver to receive a specific polarized signal according to a correlation calculated from the estimated channel.

Abstract: An electronically scanned antenna working in a wide frequency band comprises at least: one reflector panel comprising an array of phase-shifters cells; one slotted waveguide illuminating the reflector panel by a microwave having a variable frequency f. The deviation ??f of the direction of the wave emitted by the slotted waveguide, as a function of the frequency variations, countering the variation ??p of the aiming direction of the wave reflected by the reflector panel. The disclosed antenna can be used especially in applications requiring compact or low-cost antennas.

Abstract: A removable spindle for use in a thermal transfer printer houses dual RFID reader antennas that are used to read an RFID tag attached to the core of the print media. The information provided by the RFID tag enables the printer to self-calibrate based on the type of media loaded. The antenna design eliminates “null” areas at which the tag cannot be read, and enables the tag to be read around and across the entire length of the printer spindle. The design also allows the media holder to be easily removed from the printer.

Abstract: A variable-directivity antenna according to the present invention includes at least three linear passive elements, which are arranged parallel to a Z-axis so as to surround a feed element. Each of those passive elements includes at least two element pieces, etc. that are arranged parallel to the Z-axis and switching elements, etc. of a first type. The passive element assembly further includes at least one switching element, etc. of a second type that makes two adjacent passive elements electrically continuous with each other when turned ON but electrically insulates them from each other when turned OFF. By turning ON and OFF the at least one switching element of the first type and the at least one switching element of the second type, the antenna can change its directivities.

Abstract: According to one exemplary embodiment, a switching device with phase selection terminals to select between at least two phase shifting modes to reduce intermodulation distortion in the switching device includes a first phase selection terminal to select a first phase shifting mode of the switching device by enabling a first phase shifter in a first phase shifting switching branch coupled to an input of the switching device. The switching device further includes a second phase selection terminal to select a second phase shifting mode of the switching device by enabling a second phase shifting switching branch coupled to the switching device input. The intermodulation distortion in the switching device is reduced by selecting one of the first and second phase shifting modes. The switching device may further include a number of FETs coupled in series between an output of the switching device and the first and second phase shifting switching branches.

Abstract: To provide a receiving apparatus capable of dealing with various uses with a simple configuration. The receiving apparatus includes an antenna unit and a receiving apparatus main body. The antenna unit includes a receiving antenna that receives a radio signal including image data transmitted by a capsule endoscope inserted in a subject, and the receiving apparatus main body is detachably attached to the antenna unit. The antenna unit functions such that it demodulates the radio signal received via the receiving antenna into a baseband signal. The receiving apparatus main body acquires the image data based on at least the baseband signal.

Abstract: A single pole N throw (SPNT) switch arrangement including: a pole, one or more throw nodes and a switch mechanism arranged to connect the pole and a first throw node in response to a first signal and to disconnect the pole and the first throw node in response to a second signal; an interconnect, for providing the first signal, arranged for connection to the pole when providing the first signal; and a dc power source arranged to control a dc bias applied to the interconnect to provide the first signal

Abstract: A mobile communication device (100) uses an extendible antenna structure (200) in addition to a fixed antenna element (401). The extendible antenna structure has first and second conductor elements (210, 212) which are arranged to connect different antenna arrangements to corresponding matching networks (124, 126). A first conductor element couples the fixed antenna element and an antenna element in the extendible antenna structure together to the first matching network when the extendible antenna element is in an extended position. A second conductor element connects the fixed antenna alone to the second matching network when the extendible antenna element is in the retracted position.

Abstract: The invention concerns an antenna assembly (102) and a method (600) of operation thereof. In one arrangement, the antenna assembly can include a first antenna element (202) and a second antenna element (204), electrically disconnected from the first antenna element and a switching element (210) to selectively connect the first antenna element and the second antenna element. In another arrangement, the method can include the steps of sliding (604) the switching element to a first position to operate the antenna assembly in a first mode of operation and sliding (606) the switching element to a second position to operate the antenna assembly in a second mode of operation. As an example, in the first mode of operation, the antenna assembly can operate as a one-half wavelength antenna. In the second mode of operation, the antenna assembly can operate as a quarter wavelength antenna.