Abstract: A digital broadcasting antenna structure includes a substrate having at least a first and a second face; a main antenna arranged on the first face; an amplifier arranged on the first face and electrically connected to the main antenna; a compensating unit arranged on the second face and electrically connected to the main antenna; a bandwidth modulating unit arranged on the second face and electrically connected to the compensating unit; and a grounding section arranged on the second face and electrically connected to the bandwidth modulating unit. The digital broadcasting antenna structure can receive digital broadcasting signals without being restricted to any specific receiving direction, and is applicable to low, intermediate and high frequency bands to therefore achieve the effects of miniaturization, high bandwidth and low return loss.

Abstract: The present invention relates to an RF antenna structure that includes a planar structure and a loading plate, such that the planar structure is mounted between a ground plane and the loading plate to form an RF antenna. The loading plate may be about parallel to the ground plane and the planar structure may be about perpendicular to the loading plate and the ground plane. The loading plate may allow the height of the RF antenna structure above the ground plane to be relatively small. For example, the height may be significantly less than one-quarter of a wavelength of RF signals of interest. The planar structure may include two conductive matching elements to help increase the bandwidth of the RF antenna structure.

Abstract: A wide-band antenna mounted on a circuit board includes a ground plate, a radiating plate perpendicularly connected to two side edges of the circuit board, and a planar antenna element which includes a base plate, an extending plate, and a ground portion. One side of the base plate defines a gap with a first coupling portion being formed, and a slot adjacent to the gap with a first strip being formed therebetween. A second strip is extended perpendicularly from the first strip. The extending plate is extended outward from one end of the base plate. The ground portion is extended outward from the second strip and connected to the ground plate. The first coupling portion and the ground portion have an interspace to form a capacitive coupling therebetween. A groove is formed among the first and second strips and the ground portion to form a simulation inductance thereamong.

Abstract: Mobile device antennas with dielectric loading are described herein. In one example, a mobile device includes a ground plane, carried within an enclosure. An antenna is connected to the ground plane. Dielectric loading material is provided within at least a portion of an area defined between the ground plane and the antenna. The dielectric loading material results in a shortening of a required antenna length, thereby creating a recovered area, i.e., valuable space within the enclosure “recovered” by the use of dielectric loading material.

Abstract: Methods and apparatus are provided for adjusting the electromagnetic fields produced by telephones or other mobile devices capable of wireless communication. A wireless communication device includes a substrate having a ground plane. An antenna is coupled to the ground plane, and electrical currents are produced in the ground plane during operation of the antenna. A switchable counterpoise circuit that includes a conducting element and an inductor in series is provided on the substrate. The switchable counterpoise is selectively coupled to the ground plane based upon an operating mode of the wireless communications device, thereby adjusting the electrical currents flowing in the ground plane when the counterpoise is active. The changes in the ground plane currents can produce adjustments in the electromagnetic fields produced by the device, thereby improving hearing aid compatibility (HAC) of the device.

Abstract: A multi-resonant broadband antenna constructed with a dielectric substrate; a fractal radiation element having a predetermined fractal grid structure adhered on an upper surface of the dielectric substrate. A feed line adhered on the upper surface of the dielectric substrate feeds the fractal radiation element, and a ground plane positioned on a lower surface of the dielectric substrate opposite to the feed line, is physically separated by the dielectric substrate from the feed line.

Abstract: A built-in antenna apparatus for a Global Positioning System (GPS) of a portable terminal is provided. The apparatus includes a case frame for forming an exterior of the terminal, a main board fastened by the case frame and having a feeding portion and a ground portion of an antenna radiator, and an antenna radiator having a feeding point and ground point to be electrically connected to the feeding portion and ground portion of the main board, and is curved in a horizontal direction and a vertical direction of the terminal about a center of one upper-side corner of the terminal.

Abstract: An embedded UWB antenna and a portable device having the same are disclosed. The embedded UWB antenna comprises a grounding element; a T-shaped radiating element having a horizontal portion comprising at least an opening for cutting off undesired frequency and a vertical portion comprising a feed point for feeding current to resonate frequency; and a plurality of sleeve elements extended from the grounding element along two sides of the vertical portion; wherein the plurality of sleeve elements and the vertical portion are substantially parallel to each other.

Abstract: According to one embodiment, an antenna apparatus for a portable terminal includes a main board, a first antenna and a second antenna electrically coupled to the main board and spaced apart from each other on the main board, and a ground body protruding from a top surface or a bottom surface of the main board.

Abstract: A multifunction electronics member combining structural and electronics functions includes in one embodiment an elongate longitudinally-extending structural body capable of supporting a structural load and having at least one metal surface defining a first circuit base, a first electrical circuit supported by the first circuit base, and a first cover having at least one metal surface facing the electrical circuit. The circuit preferably is embedded between the first circuit base and cover to form an electrically-active, or in some embodiments passive, structural member. In one embodiment, the electrical circuit may be a circuit board including a dielectric substrate and metallic electrical conductor supported by the substrate. In one embodiment, the circuit base, circuit, and cover define a stripline. In one embodiment, the structural body includes a stiffening projection. The structural body may be made entirely of metal in some embodiments.

Abstract: A triple band antenna includes a feed-in portion, a first radiating portion, a second radiating portion, a third radiating portion and a grounding portion. The first radiating portion is connected to a first side of a first end of the feed-in portion. A second end of the second radiating portion is connected to a second side of the first end of the feed-in portion. The third radiating portion is connected to a third end of the second radiating portion. The grounding portion is located at two sides of the feed-in portion.

Abstract: A handheld electronic device may be provided that contains a conductive housing and other conductive elements. The conductive elements may form an antenna ground plane. One or more antennas for the handheld electronic device may be formed from the ground plane and one or more associated antenna resonating elements. Transceiver circuitry may be connected to the resonating elements by transmission lines such as coaxial cables. Ferrules may be crimped to the coaxial cables. A bracket with extending members may be crimped over the ferrules to ground the coaxial cables to the housing and other conductive elements in the ground plane. The ground plane may contain an antenna slot. A dock connector and flex circuit may overlap the slot in a way that does not affect the resonant frequency of the slot. Electrical components may be isolated from the antenna using isolation elements such as inductors and resistors.

Abstract: The invention provides a micro strip antenna used for both a near-field region and a remote-field region. A micro strip antenna comprises: a first dielectric substrate; a main patch, having a triangle shape under the first dielectric substrate, configured to feed a radiation current; a second dielectric substrate over the first dielectric substrate; and a sub patch, formed under the second dielectric substrate, configured to desert a current from the main patch to provide a vertical magnetic field.

Abstract: The invention discloses a wireless signal antenna including a substrate, a grounding element, a metal radiator element, a signal transmission line, and a ground connection part. The metal radiator element includes a first radiator unit, a second radiator unit, and a signal feed-in point. The ground connection part is electrically connected to the signal feed-in point and the grounding element. The first radiator unit is disposed on the substrate and bent to include a first radiator part, a second radiator part, and a third radiator part, wherein at least a part of the first radiator unit is disposed along edges of the substrate. The second radiator unit is disposed between the first radiator unit and the grounding element. The signal transmission line includes a signal line and a ground line respectively connected to the signal feed-in point and a layout area of the grounding element.

Abstract: A transceiver, including a multi-layer printed circuit board including a layer that serves as a first ground plane, and an antenna for transmitting and receiving radio signals, a second ground plane, and at least one ground contact for connecting the first ground plane and the second ground plane, wherein the first ground plane is too short for the antenna to resonate at a desired frequency, but the first and second ground planes, when connected, provide a combined ground plane sufficient for the antenna to resonate at the desired frequency.

Abstract: An antenna arrangement operable at a first resonant frequency f having a corresponding resonant wavelength ? the antenna arrangement comprising: an antenna comprising a feed; a ground plane coupled to the antenna comprising a first region and a second region; and a grounded conductive structure coupled to the first region of the ground plane, wherein the second region of the ground plane is configured such that, at the first resonant frequency f the current flows predominantly in the grounded conductive structure compared to the second region of the ground plane.

Abstract: Systems and methods for providing a reconfigurable groundplane are provided. In one embodiment, the invention relates to an antenna assembly having a reconfigurable groundplane, the assembly including a radio frequency (RF) feed, a plurality of radiating elements, a plurality of interconnects, each coupling one of the plurality of radiating elements to the RF feed, a first groundplane positioned between the RF feed and the plurality of radiating elements, a second groundplane positioned between the RF feed and the plurality of radiating elements, the second groundplane including at least one cavity for enclosing a liquid metal.

Abstract: A planar antenna device includes a dielectric layer and two conductor layers vertically sandwiching the dielectric layer. The lower conductor layer is used as a ground, and the upper conductor layer forms a radiating element having a structure in which four or more radiating element pieces of different sizes are connected to a feeder line.

Abstract: A wide band antenna includes a radiation element, a ground surface, a dielectric element, a connector; a first microstrip feeder and a second microstrip feeder. The radiation element is a rectangle shaped and includes a first side and a second side. The lengths of the first side and the second side are not equal. The dielectric element is positioned between the radiation element and the ground surface. One end of the first microstrip feeder is connected to the first side of the radiation element. One end of the second microstrip feeder is connected to the second side of the radiation element, the other ends of the first and second microstrip feeder are connected to the connector.

Abstract: A slim mobile communication device includes an antenna structure. The antenna structure includes a dielectric substrate, a ground element, an antenna element, and a feeding line. The antenna element is a planar structure and is disposed on a no-ground portion of the dielectric substrate. At least two edges of the no-ground portion are surrounded by a ground element of the dielectric substrate, wherein one of the edges used as a feeding edge and the other edges are non-feeding edges. A distance between the non-feeding side edge of the antenna element and the second edge of the no-ground portion is smaller than 3 mm. A length of the non-feeding side edge of the antenna element is at least 5 mm. The non-feeding side edge of the antenna element is short-circuited to the ground element. The feeding line is coupled to the feeding side edge of the antenna element.

Abstract: An antenna device includes a substrate, and a dual-band antenna disposed on a surface of the substrate. The dual-band antenna includes a feed-in section, a first radiator arm, a second radiator arm, a third radiator arm, and a ground section. The feed-in section is for signal feed-in, and has opposite first and second ends. The first radiator arm extends from the first end of the feed-in section and is parallel to the feed-in section. The second radiator arm is connected to the second end of the feed-in section and extends parallel to the feed-in section. The third radiator arm is disposed adjacent to and extends parallel to the first radiator arm in a manner that the feed-in section is disposed between the third radiator arm and the second radiator arm. The ground section is connected to the third radiator arm.

Abstract: The device, a conformal antenna, includes an antenna element directly coupled to a layer of gyrotropic material and means for creating a magnetic field, the magnetic field having a component substantially perpendicular to, and passing through, the layer of gyrotropic material and the antenna element. The gyrotropic material may be at least partially disposed on a ground plane and may comprise a material such as yttrium iron garnet. The means for creating a magnetic field can be located within the layer of gyrotropic material and may comprise at least one external magnet. The reflective metal ground plane can be the outer surface of a vehicle. The antenna element could have a dipole antenna configuration, and can produce a wave that is linearly polarized. The operation of the device may be at or above the resonant frequency of the gyrotropic material.

Abstract: A wireless device using natural higher order harmonics on multi-band reconfigurable antenna designs where the antenna higher order resonance is used to build a multi-band to multi-band frequency reconfigurable antenna.

Abstract: An antenna apparatus includes: a ground plane; a plurality of conductive elements arranged substantially in parallel to a surface of the ground plane; a plurality of linear elements configured to connect the conductive elements to the ground plane; and an antenna configured to radiate a radio wave, wherein a plurality of openings to reflect the radio wave radiated from the antenna are formed in the ground plane under an arrangement region of the conductive elements.

Abstract: The invention relates to a handheld device comprising a first antenna (401, 701, 901, 931, 961, 1101, 1151, 1301, 1501) arranged to operate in at least a first frequency band, and a second antenna (402, 702, 902, 1102, 1302, 1502, 2210) arranged to operate in at least a second frequency band, wherein said second frequency band is different from said first frequency band. According to the invention, the second antenna comprises a slot antenna comprising at least one slot in at least one conductive layer. The invention also relates to enhancement of the isolation between first and second antennas in a handheld device.

Abstract: A low-height PIFA-fed antenna system having high gain, wide bandwidth and wide beamwidth for applications on wireless communications devices. The antenna is suitable for internal installation within a handset, such as a cellphone. The antenna includes a ground plane conductor, such as the ground plane of a wireless device, and a resonator element having a top portion with a split free end defining an open space. The antenna is well adapted for high volume manufacturing processes using conventional fabrication techniques such as metal stamping or selectively plated plastic.

Abstract: A multi-band antenna includes a grounding element having a side edge, a connecting element, and a radiating element. The radiating element is electrically connected to the grounding element via the connecting element, and includes a first radiating portion and a second radiating portion respectively extending from the connecting element. The connecting element includes a folded connecting arm extending along three dimensions. A slot is formed between the connecting arm and the grounding element.

Abstract: A multiple antenna communication apparatus includes a printed circuit board having multiple layers and two antenna devices. The two antenna devices are disposed on antenna regions of the printed circuit board, and each antenna device comprises a ground terminal. Each ground terminal is coupled to a conductor on a different layer of the printed circuit board. The antenna regions on which the two antenna devices are disposed do not contain any main ground via.

Abstract: Handheld electronic devices are provided that contain wireless communications circuitry having at least one antenna. The antenna may have a planar ground element and a planar resonating element. The planar ground element may have a rectangular shape that matches a rectangular housing shape for a handheld electronic device. A dielectric-filled slot may be formed in one end of the planar ground element. The planar resonating element may be located above the slot. The antenna may be a hybrid antenna that contains both a slot antenna structure formed from the slot and a planar inverted-F structure formed from the planar resonating element and the planar ground element. The antenna may be fed using a single transmission line or two transmission lines. With two transmission lines, one transmission line may be associated with the slot antenna structure and one transmission line may be associated with the planar inverted-F antenna structure.

Abstract: The present invention is Broad Area Maritime Surveillance (BAMS) radiating element which includes a plurality of dipole layers, a stripline feed layer and a cover portion. The radiating element is low-profile and may have a thickness of 180 mils. Further, the radiating element may have an operating frequency range from 5.35 GHz to 5.46 GHz and a depth of 0.083 free space wavelengths at the high end of the operating frequency range. Still further, the dipoles of the dipole layers of the BAMS radiating element vary in width from layer to layer to maximize match at the edge of the scan volume. The BAMS radiating element may be at least partially constructed of printed circuit board material, such as Rogers 4003. The BAMS radiating element may have a return loss of less than ?10 decibels over its entire scan volume and frequency band.

Abstract: An antenna is disclosed, which comprises: a substrate with a first surface and a second surface; a first radiation unit, disposed on the first surface; an insulating unit, disposed on the first surface on top of the first radiation unit; a first feed point, formed on the second surface and electrically connected to the first radiation unit; a grounding unit, disposed coplanar and connected with the first radiation unit; a first gap, formed between the first radiation unit and the grounding unit; and a second feed point, formed on the second surface and electrically connected to the grounding unit; wherein, as the second surface with the two feed points disposed thereon is adjacent to at least a metallic component and the radiation units are disposed on the first surface, the radiation units do not directly face the metallic component and thus prevent the same from being interfered by metallic shielding.

Abstract: A broadband antenna printed on a substrate. The substrate includes a first surface, a second surface perpendicular to the first surface, and a third surface parallel to the first surface. The broadband antenna includes a grounding portion, a feeding portion, and a radiating portion. The grounding portion is located on the first surface. The feeding portion feeds electromagnetic signals and includes a first feeding section printed on the third surface and a second feeding section printed on the second surface. The radiating portion includes a first radiating section, a second radiating section, and a third radiating section. The first radiating section is printed on the first surface. The second radiating section comprises a first radiating segment and a second radiating segment. The third radiating section is printed on the second surface and formed a ladder portion.

Abstract: There is provided an antenna element capable of implementing miniaturization, acquisition of a high gain, and broadening of a band and coping with multiple bands.

Abstract: A disclosed antenna device includes a ground section; and an element section projecting from the ground section. The length of the ground section in a direction orthogonal to a side of the ground section from which side the element section projects is less than approximately ¼ a corresponding wavelength. The ground section is configured to be disposed over and attached to a conductive section.

Abstract: The invention provides a wireless chip which can secure the safety of consumers while being small in size, favorable in communication property, and inexpensive, and the invention also provides an application thereof. Further, the invention provides a wireless chip which can be recycled after being used for managing the manufacture, circulation, and retail. A wireless chip includes a layer including a semiconductor element, and an antenna. The antenna includes a first conductive layer, a second conductive layer, and a dielectric layer sandwiched between the first conductive layer and the second conductive layer, and has a spherical shape, an ovoid shape, an oval spherical shape like a go stone, an oval spherical shape like a rugby ball, or a disc shape, or has a cylindrical shape or a polygonal prism shape in which an outer edge portion thereof has a curved surface.

Abstract: A mobile apparatus is provided. The mobile apparatus includes an antenna and a ground plane. The antenna is used to receive or transmit a radio frequency signal and includes a grounding part having a first ground terminal and a second ground terminal. Wherein, a distance between the first ground terminal and the second ground terminal is associated with a wavelength of the radio frequency signal. The ground plane is electrically connected to the grounding part of the antenna through the first ground terminal and the second ground terminal. The present invention effectively reduces a specific absorption ratio and a required height for setting the antenna such that a bandwidth of the antenna is increased.

Abstract: An antenna assembly includes a grounding element with a first edge and a second edge, a first antenna and a second antenna. The first antenna and the second antenna respectively extend from the first side edge and the second side edge of the grounding element, and each includes a connecting element with an opening, a radiating element upward extending from the connecting element and a feeding line. The two openings of the two antennas respectively face two opposite directions. The radiating element of the first antenna is above the second side edge of the grounding element, and the radiating element of the second antenna is above the first side edge of the grounding element.

Abstract: Dual-band antennas that are embedded within portable devices such as laptop computers. In one aspect, a dual-band antenna for a portable device (e.g., laptop computer) includes a first element having a resonant frequency in a first frequency band and a second element having a resonant frequency in a second frequency band, wherein the first element is connected to a signal feed, wherein the second element is grounded, and wherein the first and second elements are integrated within a portable device.

Abstract: The invention relates to an antenna comprising a plurality of metallic elements (10, 20, 30, 40), said metallic elements (10, 20, 30, 40) being in point contact (11, 21, 31, 41) with a ground plane (M) and equally distributed about a central axis of symmetry (D) of the antenna, perpendicular to the ground plane (M). The antenna of the invention is characterized in that each metallic element extends from the point contact at a non-zero angle of inclination (q) to said ground plane (M) and in that the ground plane (M) includes at least one cavity (80-83, 84-87) so that, in operation, the antenna matching is better in a specified frequency band than when the ground plane (M) has no cavities.

Abstract: An antenna device is provided with an antenna element including a base, an inductance adjustment pattern that is formed on the upper surface and a side surface of the base and has a substantially U-shape, a capacitance adjustment pattern that is formed on the upper surface of the base and is placed to face the inductance adjustment pattern, and first to third terminal electrodes provided on the bottom surface of the base. The antenna element is installed between the first side and the second side of the ground pattern that form the two facing sides of the antenna mounting region. One end of the inductance adjustment pattern is connected to the feed line, the other end of the inductance adjustment pattern is connected to the first side of the ground pattern, and the third terminal electrode is connected to the second side of the ground pattern.

Abstract: A wireless communication system can include polarization agile antennas to enable adaptation to the polarization characteristics of a changing propagation channel. In one embodiment, a mobile terminal can include one or more polarization-agile antennas, and can select polarization orientations that are preferentially propagated through the changing propagation channel. In another embodiment, a mobile terminal having two polarization-agile antennas can provide spatial diversity, polarization diversity, or combinations of both. Multiple-input multiple-output (MIMO) systems can include polarization-agile antennas to allow for switching between spatial and polarization diversity, combined spatial and polarization diversity, and various Eigen channel decompositions using spatial, polarization, and combined spatial and polarization dimensions. An extended polar normalization provides enhanced fidelity for methods of communications system modeling.

Abstract: A multi-band antenna is provided. The multi-band antenna includes a grounding element, a connecting element, a first radiating element and a second radiating element. The connecting element is connected to the grounding element and extends along a second direction. The first radiating element is connected to the connecting element and extends along the first direction, wherein the first radiating element, the grounding element and the connecting element are disposed on a first plane and have a resonating slot thereamong. The second radiating element is connected to the first radiating element and extends along a second plane to reach a specific distance, and then turns to be extended on a third plane parallel to the first plane, wherein the first plane and the third plane have a resonating region therebetween.

Abstract: A patch antenna includes a metal plate having two parallel long edges and two short edges connected together. The metal plate has a first fold line and a second fold line that are parallel to the two short edges and that partition the metal plate into a ground portion and a radiating portion, the former being longer than the latter but not longer than twice the length of the latter. The metal plate has a shorting portion between the first and second fold lines. A feed-in portion extends from the second fold line toward the first fold line, forms a first slit with the ground portion, and forms a second slit with the shorting portion. Both slits are interconnected. The shorting portion is perpendicular with respect to the ground portion. The radiating portion is perpendicular with respect to the shorting portion and the feed-in portion.

Abstract: An omni-directional, multi-polarity, low profile planar antenna for receiving high definition television signals includes a dielectric substrate having a first side and a second side on which are respectively formed first and second conductive patterns. Each conductive pattern includes segments functioning as antenna elements which are arranged to form a first modified H-shaped pattern on the first side of the dielectric substrate, and a second modified H-shaped pattern on the second side of the dielectric substrate which is disposed substantially ninety degrees with respect to the first modified H-shaped pattern. Each of the H-shaped patterns includes an extended S-shaped segment.

Abstract: An antenna element has a dielectric base, at least a portion of which is arranged in a non-ground region of a substrate. A feeding radiation electrode has an intermediate path that is connected to a feeding portion and that is arranged to extend in a perimeter direction of the dielectric base on a side surface of the dielectric base adjacent to the non-ground region and spaced away from a ground region. The feeding radiation electrode has an open end side path that is arranged to extend along a loop path from the termination of the intermediate path and an open end of the extended distal end is arranged parallel or substantially parallel to and spaced apart from the intermediate path. A dielectric material having a high dielectric constant, which increases the capacitance between the intermediate path and the open end, is located in a region including the spaced region between the intermediate path and parallel or substantially parallel open end.

Abstract: A single band antenna includes a radiating part, a feeding part and a grounding part. The feeding part is connected with the radiating part. A first separating slot exists between the radiating part and the feeding part. The grounding part is connected with the feeding part. A second separating slot exists between the feeding part and the grounding part. Each of the first separating slot and second separating slot has at least one bend.

Abstract: A method (1400) and an RF circuit (100, 400, 700, 1000, 1100, 1200, 1300) for a wireless communication device that mitigates near field radiation generated by the wireless communication device. At least one counterpoise (104, 404, 1304) can be configured to resonate at or near at least one operating frequency of an antenna (102) of the wireless communication device. The antenna can be a component of the RF circuit. The counterpoise can be electromagnetically coupled to the antenna to mitigate near field radiation of the antenna at the at least one operating frequency of the antenna in order to comply with an applicable hearing aid compatibility (HAC) specification.

Abstract: A mobile wireless communications device may include a portable housing, a dielectric substrate carried by the portable housing having a front side facing toward a user and a back side opposite the front side, and a ground plane carried by the dielectric substrate. The device may further include at least one circuit carried by the dielectric substrate, and an antenna carried by the dielectric substrate adjacent an end thereof and electrically connected to the at least one circuit. A ground patch may be adjacent the front side of the dielectric substrate that is electrically connected to the ground plane and spaced apart from and at least partially overlapping the antenna.

Abstract: A microstrip antenna located on a substrate with a first surface and a second surface opposite to the first surface includes a feeding portion, a grounding portion, and a radiating portion. The feeding portion is located on the first surface of the substrate to feed electromagnetic signals. The grounding portion is located on the second surface of the substrate. The radiating portion is located on the first surface and includes a first radiating part, a second radiating part, a third radiating part, and a fourth radiating part. Each of the first radiating part, the second radiating part, and the third radiating part is on a rectangle-shaped strip line. The first radiating part is connected to the feeding portion. The fourth radiating part is perpendicularly connected to a second end of the third radiating part.

Abstract: In a portable telephone, a first housing and a second housing are connected to each other by hinge sections which makes the first housing and the second housing rotatable about the long-side direction of the housings. A metal frame is provided at a peripheral section of the first housing, and a display section is provided at the central section of the first housing. A metal is used as a frame and can also be operated as an antenna element. In the second housing, a circuit board to which a baseband circuit and a radio circuit are mounted, a first feeding section which supplies electric power to the metal frame, and a draw-out rod antenna which can be drawn out from and housed in the housing are supplied with electric power by the second feeding section. Further, a cellular antenna which performs communication with a base station is also incorporated in the second housing. The rod antenna can be drawn out in the direction substantially in parallel with the rotation axis of the above described hinge.