Abstract: An ultra-wideband monopole antenna for 5G application is disclosed comprising a first quarter wavelength conductor and a second quarter wavelength conductor, for transmitting and/or receiving electromagnetic waves. A flat portion of the first quarter wavelength conductor and a flat portion of the second quarter wavelength conductor are preferably arranged and located perpendicular and intersecting to each other. Two curved wings of the first quarter wavelength conductor and two curved wings of the second quarter wavelength conductor are preferably arranged and located concentrically and having a same center. The first and second quarter wavelength conductors are joined to deliver ultra wideband frequency in the range of 600-960 MHz and 1710-6000 MHz.

Abstract: A multi-band antenna has a feed point, a grounding location, a first portion for low band operation, a second portion for low band operation, and one or more portions for high band operation. The ground reference of the feed point for the multi-band antenna is connected to a separate object that may provide a base for the multi-band antenna. The feed point of the multi-band antenna may be spaced above the base and have a space between the feed point and a location for the ground point. The low band portion has multiple resonances that are often odd multiples of the lowest resonant response. The portions that resonant most dominantly in the high band often have multiple resonances that are even multiples of the lowest high band resonance. The multi-band antenna has resonances spaced closely enough to appear to be a wide band antenna above the fundamental high band resonance.

Abstract: A slotted patch antenna includes a dielectric substrate, a radiation electrode which is provided on a major surface of the dielectric substrate, and a ground conductor which is disposed on a surface that is opposite to the major surface. The radiation electrode is formed with a slots having at least one of a meandering portion, a curve portion, or a folded portion. An external shape of the radiation electrode is a square, and totally two pairs of slots are formed inside the square, each of the slots being along respective sides of the square. Each of the slots is arranged so as to be line-symmetrical with respect to an axis of symmetry that is parallel with one of the sides of the square and passes through a center of the square, and to be point-symmetrical with respect to the center of the square.

Abstract: An electromagnetic device includes at least one dielectric resonator antenna, DRA, and at least one dielectric waveguide, DWG, configured so that during operation of the electromagnetic device, the at least one DRA provides an electromagnetic signal to the at least one DWG, or the at least one DWG provides an electromagnetic signal to the at least one DRA. The at least one DWG has a three-dimensional, 3D, shape that is different from a 3D shape of the at least one DRA.

Abstract: An apparatus for damping vibrations in high-voltage devices has a support arrangement for the high-voltage device. The support arrangement includes support elements interconnected by connection elements. Intermediate elements, in particular coated washers, are arranged between the connection elements and the support elements and/or between different support elements. There is also described a method for damping vibrations, in which connection elements spatially fix support elements of the support arrangement of a high-voltage device in a mechanically stable manner. When mechanical vibrations occur on the high-voltage device, the connection elements dampen the mechanical vibration in a defined manner via a predetermined sliding friction with the support elements and via a spatially predetermined play in relation to the support elements.

Abstract: A circuit for optoelectronic down-conversion of a terahertz, THz, signal comprises a first photodiode and a second photodiode configured to be excited by an optical beat signal. The photodiodes are coupled in series through a common antenna. The terminals of the antenna are coupled to form an output terminal and the antenna is configured to receive the terahertz, THz, signal. The photodiodes thereby, via the optical beat signal, respectively, down-convert the THz signal and generate a current comprising an intermediate frequency, IF, component and a direct current, DC, component. The respective generated currents are summed at the output terminal, thereby obtaining the IF components and cancelling the DC components.

Abstract: A communications device may include an RF device, and an antenna. The antenna may include a conductive ground plane, an elongate support extending from the conductive ground plane, and a helically wound conductive strip carried by the elongate support. The communications device may have a coaxial cable coupling the RF device and the antenna. The coaxial cable may include an inner conductor and an outer conductor surrounding the inner conductor. The outer conductor may be coupled to the conductive ground plane and the inner conductor may extend through the conductive ground plane and be coupled to a proximal end of the helically wound conductive strip.

Abstract: The present disclosure discloses a distance measuring device for a vehicle. The distance measuring device for the vehicle of the present disclosure includes a fixing portion to be mounted on an outer surface of the vehicle; and a sensor portion which is installed in the fixing portion, irradiates a radio wave to the outside of the vehicle, receives the radio wave from the outside of the vehicle, measures a distance between an object of the outside of the vehicle and the vehicle, or detects the object.

Abstract: An antenna structure includes a first radiation element, a second radiation element, a third radiation element, a fourth radiation element, a fifth radiation element, and a nonconductive support element. The first radiation element has a feeding point. The second radiation element is coupled to the feeding point. The third radiation element has a grounding point. The fourth radiation element is coupled to the third radiation element. The fourth radiation element is adjacent to the first radiation element and the second radiation element. The fifth radiation element is coupled to the third radiation element and the fourth radiation element. The first radiation element, the second radiation element, the third radiation element, the fourth radiation element, and the fifth radiation element are disposed on the nonconductive support element.

Abstract: The present disclosure provides a middle frame assembly and an electronic device. The middle frame assembly includes a middle frame and an antenna radiator. The middle frame includes a metal substrate. The antenna radiator is disposed at a fringe of the metal substrate. The antenna radiator defines an escape space through the antenna radiator and configured to receive a functional component. According to the present disclosure, the antenna radiator may be disposed at the fringe of the middle frame such that the middle frame assembly may be a continuous and integral structure.

Abstract: A dual-band antenna is provided. The dual-band antenna includes a first antenna, a second antenna, and a grounding component. The first antenna has a first feed point for transceiving a first signal. The second antenna has a second feed point. The grounding component is electrically coupled to the first feed point and the second feed point, wherein the grounding component forms a first path and a second path between the first feed point and the second feed point, wherein a first path length of the first path and a second path length of the second path are integer multiples of a first wavelength of the first signal.

Abstract: A multi-layer circuit structure (110) has multiple layers stacked along a vertical direction. Further, at least one cavity region (120) is formed at an edge of the multi-layer circuit structure (110). The at least one cavity region (120) is formed of multiple non-conductive vias from which a dielectric substrate material of the multi-layer circuit structure (120) is removed. Further, the device comprises at least one vertical antenna patch (130) arranged in the at least one cavity region (120).

Abstract: An omnidirectional quad-loop antenna has four open circular wire loops, each being the same length as the wavelength of a Wi-Fi signal. The loops are joined at their tops and each lies in a distinct plane that is rotated 45 degrees with respect to each adjoining wire loop. The bottom terminal ends of the loops are configured to connect to the outer conductor of a coaxial cable. A helical wire coil may be connected at one end to the loops at the connection point, or insulated from the loops, and the other end is configured to connect to the inner conductor of the cable. With the antenna and cable connected to a router, the Wi-Fi signal is much stronger, in any direction, than without. The compact antenna fits within the volume of a sphere with a circumference corresponding to the wavelength.

Abstract: A communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT) are provided. The disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. According to the disclosure, an antenna module includes a first substrate layer on which at least one substrate is stacked; an antenna coupled to an upper end surface of the first substrate layer; a second substrate layer having an upper end surface coupled to a lower end surface of the first substrate layer and on which at least one substrate is stacked; and a radio frequency (RF) element coupled to a lower end surface of the second substrate layer.

Abstract: A system for transmitting or receiving signals may include a dielectric substrate having a major face, a communication circuit, and an electromagnetic-energy directing assembly. The circuit may include a transducer configured to convert between RF electrical and RF electromagnetic signals and supported in a position spaced from the major face of the substrate operatively coupled to the transducer. The directing assembly may be supported by the substrate in spaced relationship from the transducer and configured to direct EM energy in a region including the transducer and along a line extending away from the transducer and transverse to a plane of the major face.

Abstract: A radiating system comprises a radiating structure including two or more radiation boosters for transmission and reception of electromagnetic wave signals, a radiofrequency system and an external port. The radiating system is capable of operation in at least a first and second frequency regions which are preferably separated. The radiofrequency system comprises two or more matching networks and a combining structure at which, in transmission, electromagnetic wave signals from the external port are substantially separated and coupled to each radiation booster based on the frequency of the signals; and, in reception, signals from each radiation booster are combined and coupled to the external port. The radiofrequency system provides impedance matching to the radiating structure in the first and second frequency regions at the external port. An advantage of such radiating system is that signals from the first and second frequency regions are fed to and retrieved in one single port.

Abstract: A wireless device operates in multiple frequency bands via a multi-structure arrangement that optimizes the electromagnetic performance at each frequency range of operation. The device includes a radiating system comprising a ground plane layer, a multi-structure antenna system that comprises at least two structural branches and at least a radiation booster, and a radiofrequency system. The radiofrequency system comprises an element inserted in the branch structure, connected at a point within the structure. The radiofrequency system may include an additional matching network that fine tunes the impedance of the device to match all the frequency ranges of operation.

Abstract: A wireless device operates in multiple frequency bands via a multi-structure arrangement that optimizes the electromagnetic performance at each frequency range of operation. The device includes a radiating system comprising a ground plane layer, a multi-structure antenna system that comprises at least two structural branches and at least a radiation booster, and a radiofrequency system. The radiofrequency system comprises an element inserted in the branch structure, connected at a point within the structure. The radiofrequency system may include an additional matching network that fine tunes the impedance of the device to match all the frequency ranges of operation.

Abstract: An antenna structure includes a metallic frame and a stub antenna. The metallic frame defines a slot and two gaps. The two gaps are positioned at two ends of the slot and are substantially perpendicular to the slot. The metallic frame is divided into a first portion and a second portion by the slot and the two gaps. A portion of the metallic frame surrounded by the slot and the two gaps forms the first portion. The first portion serves as a radiator of the antenna structure and is grounded through the second portion. The stub antenna is positioned at an interior of the metallic frame and is spaced from the radiator.

Abstract: An antenna structure includes a metallic member, a radiating portion, and a meander portion. The metallic member defines at least one slot and is divided into a first metallic portion and a second metallic portion by the at least one slot. The radiating portion is electrically connected to the first metallic portion and is configured to feed current to the first metallic portion. The meander portion is configured to activate a low-frequency mode of the antenna structure and maintain high-frequency characteristics of the antenna structure. The second metallic portion is spaced apart from the first metallic portion and is grounded. The meander portion includes a first end and a second end. The first end of the meander portion is electrically connected to the first metallic portion, and the second end of the meander portion is grounded.

Abstract: A wireless communication apparatus includes a substrate, an electrical insulation cover, a first antenna and a second antenna. The substrate has a ground surface. The electrical insulation cover covers the substrate. The electrical insulation cover has first and second surfaces. The first antenna is disposed on the first surface and is electrically connected to the ground surface. The second antenna is disposed on the second surface and includes first and second capacitive coupling portions, a signal feeding portion and a first slit. The signal feeding portion connects the first and second capacitive coupling portions. The first slit is located between the first and second capacitive coupling portions. The first antenna can generate first and second resonant modes with the first and second capacitive coupling portions in a manner of capacitive coupling, respectively. The first and second resonant modes have different frequency bands.

Abstract: A riser having a riser body having an interior surface, an exterior surface, and two spaced-apart ends, at least one identification assembly on the riser body, the identification assembly having an assembly body and a wave energizable apparatus in the body, the assembly body having an interior surface, an exterior surface, and a channel therethrough in which is positioned part of the riser body, the assembly body releasably secured on the riser body, and the wave energizable apparatus positioned within the assembly body. This abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure and is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims, 37 C.F.R. 1.72(b).

Abstract: A transformable mobile device operating in a notebook mode or a tablet mode is provided. The transformable mobile device includes a base, an upper cover, a hinge, a main antenna, and a ground metal plane. The hinge is connected between the base and the upper cover. The main antenna is disposed in the upper cover. The ground metal plane is disposed in the base, or on an outer surface of the base. The ground metal plane includes a main portion and a float portion. The float portion is completely separate from the main portion.

Abstract: An antenna structure includes a feed unit, a grounding unit, a connecting unit, a radiating unit, and a resonating unit. The grounding unit is spaced apart from the feed unit. The connecting unit resists and is electrically connected to the feed unit and the grounding unit. The radiating unit is electrically connected to one side of the connecting unit so as to activate a first resonance mode. The resonating unit is electrically connected to another side of the connecting unit so as to activate a second resonance mode.

Abstract: An antenna structure includes a feed unit, a grounding unit, a first radiating unit, a second radiating unit, third radiating unit, fourth radiating unit, and a fifth radiating unit. The grounding unit is spaced apart from the feed unit. The first radiating unit is electrically connected to the feed unit. The second radiating unit is electrically connected to the grounding unit. The third radiating unit is electrically connected to the first radiating unit, the second radiating unit, and the fourth radiating unit. The fifth radiating unit is electrically connected to the feed unit and couples with the fourth radiating unit.

Abstract: A microstrip patch antenna includes a via-hole pad including via-holes, a patch disposed on the via-hole pad, a feeding via-hole disposed at a side of the patch through the patch and the via-hole pad, and a shorting via-hole disposed at a side of the patch, and configured to connect the patch and a ground unit.

Abstract: An antenna for receiving radio signals of at least a first frequency band and a second frequency band includes a grounding unit for providing grounding, a connecting unit electrically connected to a first terminal of the grounding unit, a feeding terminal, formed on the connecting unit, for transmitting the radio signals of the first frequency band and the second frequency band, a first radiating element electrically connected between the connecting unit and a second terminal of the grounding unit, and a second radiating element electrically connected between the connecting unit and a third terminal of the grounding unit. Lengths of signal routes from the feeding terminal through the first radiating element and the second radiating element to the grounding unit are substantially equal to a half wavelength of the radio signals of the first frequency band and a half wavelength of the radio signals of the second frequency band, respectively.

Abstract: An antenna, including at least one set of conductive arms radiative at a resonant frequency, the at least one set of conductive arms including a first conductive arm having a first terminus and a second conductive arm having a second terminus, the first and second termini being closely spaced so as to form a capacitive gap therebetween, the capacitive gap having a width, a feed connection located on the first conductive arm, a first electrical length being defined along the first conductive arm between the feed connection and the first terminus, a ground connection located on the second conductive arm, a second electrical length being defined along the second conductive arm between the ground connection and the second terminus, the resonant frequency depending at least on the width of the capacitive gap and on the first and second electrical lengths, a total electrical length along the set of conductive arms between the first and second termini being less than or equal to half of a wavelength corresponding to

Abstract: An antenna includes a grounding conductor, a feed conductor, a resonant conductor, and a radioactive conductor. The feed conductor is disposed apart from the grounding conductor. The resonant conductor having a resonant width is disposed along the grounding conductor and disposed apart from the grounding conductor by a resonant-ground distance. The resonant conductor connects to the feed conductor. The radioactive conductor has a radioactive width. One end of the radioactive conductor connects to one end of the resonant conductor with the feed conductor, and another end of the radioactive conductor is disposed apart from the grounding conductor. The radioactive conductor is disposed along the resonant conductor and disposed apart from the resonant conductor by a resonant-radioactive distance. The resonant conductor is positioned between the radioactive conductor and the grounding conductor.

Abstract: There is provided an antenna device for transmitting a radio wave to a tag capable of receiving the radio wave includes a first layer, a second layer, and a first plate which is disposed on or above the second layer. These are electrically conductive. The second layer is disposed apart from the first layer and includes a plurality of non-electrically conductive portions to generate an electromagnetic wave travelling along a first axis above the second layer. Further, the first plate is disposed on or above the second layer to allow the tag to receive the radio wave transmitted from the antenna.

Abstract: A reduced ground plane shorted microstrip antenna comprising: a metal ground plane having a radius of about 0.24?; a substrate comprising a material having a dielectric constant of at least 4 disposed on top of said ground plane; a metal top layer including a radiating patch disposed on top of said substrate; a shorting wall disposed between said ground plane and said patch; and a power feedline connected to the metal top layer such that the top layer impedance and the feedline impedance match.

Abstract: An electrical component provides a ceramic element located on or in a dielectric substrate between and in contact with a pair of electrical conductors, wherein the ceramic element includes one or more metal oxides having fluctuations in metal-oxide compositional uniformity less than or equal to 1.5 mol % throughout the ceramic element. A method of fabricating an electrical component, provides or forming a ceramic element between and in contact with a pair of electrical conductors on a substrate including depositing a mixture of metalorganic precursors and causing simultaneous decomposition of the metal oxide precursors to form the ceramic element including one or more metal oxides.

Abstract: An antenna that comprises a feeding point, a first conductor and a second conductor is provided. The first conductor is connected to the feeding point, includes, as an open end, an end which is not connected to the feeding point, and has a linear shape. The second conductor is formed to branch from the first conductor, includes, as an open end, an end on an opposite side of a point branching from the first conductor, and has a linear shape. At least part of the first conductor and at least part of the second conductor are formed on different planes and include coupling portions electromagnetically coupled to each other.

Abstract: A multiband antenna for receiving or transmitting wireless signals of a plurality of frequency bands includes a grounding sheet, formed with a hole at a first side, for providing grounding, a first micro-strip line, substantially parallel to the first side of the grounding sheet, a connecting unit, connecting to the first side of the grounding sheet and the first micro-strip line, for forming a resonant cavity with the first side of the grounding sheet and the first micro-strip line, a second micro-strip line, formed in the resonant cavity and substantially parallel to the first micro-strip line, a third micro-strip line, extending from the hole of the grounding sheet to the second micro-strip line, and a feed-in terminal, formed on the third micro-strip line within the hole, for transmitting the wireless signals.

Abstract: Low passive intermodulation (PIM) antenna assemblies and methods for utilizing the same. In one embodiment, the low PIM antenna assembly includes an ultra-wide band quarter wave monopole over ground plane antenna apparatus that operates within a band from 698-5900 MHz. The radiating element is comprised of three (3) features that are separated from one another by one hundred twenty (120°) thus producing a triangular shaped pattern. Such a configuration reduces the nulls by about twenty percent (20%) as compared with similar antenna implementations having flat radiating elements. Moreover, in order to reduce the diameter of the ground plane while simultaneously increasing the electrical length of the ground plane, forming of the ground plane is required. Methods of using the aforementioned low PIM antenna assembly are also disclosed.

Abstract: A short, efficient antenna utilizing a floating coax transmission line over ground or overlapping wire feed structure for reduced antenna size for use in handheld radios. An asymmetric transmission line radiator having a length (LTL) is oriented substantially planar to and proximal to a truncated ground plane, and having at one end an input/output connector, and at an other end a feed point at least one of above a ground plane and proximal to its edge. An exciter antenna in a form of a plate or bent wire is coupled to the feed point and is exterior to the edge of the ground plane and oriented substantially orthogonal to the ground plane, the exciter antenna having a larger dimension length (LEA) that is at least 50% smaller than the length LTL. The overall length of a perimeter of the antenna is approximately ½ a wavelength of a center frequency of the antenna.

Abstract: The invention relates to an improved antenna element. Such an antenna element comprises a substrate, a first conductor and a second conductor. The substrate has at least a first lateral surface. The first conductor is provided on the first lateral surface, and includes a feed line portion and a monopole portion. The second conductor is provided at least partially on the same, first lateral surface, and includes: two ground planes which are disposed on the first lateral surface adjacent to the feed line portion of the first conductor at opposite sides thereof, and two stubs which are disposed on the first lateral surface at opposite sides of the respective of the two ground planes, and which extend in a direction parallel to the feed line portion of the first conductor. The two ground planes and the two stubs of the second conductor are arranged to form a coplanar waveguide.

Abstract: An antenna structure having a ground element and an antenna element is provided. The antenna element is disposed on a dielectric substrate, and includes a first radiation portion, a second radiation portion, and a spiral metal line. An end of the first radiation portion is a feeding point of the antenna element, and another end is open. An end of the second radiation portion is electrically coupled to the ground element, and the length of the second radiation portion is greater than that of the first radiation portion. The first radiation portion is surrounded by the second radiation portion. An end of the spiral metal line is coupled to the first radiation portion. The spiral metal line contributes a parallel resonance outside the antenna's operating band, and results in a resonant mode generated within the antenna element's operating band such that the operating bandwidth of the antenna element is increased.

Abstract: A wireless device includes at least one radiating system having a redundancy system and a combining system. The redundancy system includes two or more radiation boosters. The radiating system is characterized by its simplicity that facilitates its integration within the wireless device and achieves enhanced radio-electric performance in at least one frequency region of the electromagnetic spectrum, which may include multiple wireless services. The combining system enables a substantially balanced power distribution among the radiation boosters of the redundancy system, and the radiating system provides an increased robustness to human loading effects in at least one frequency region of operation.

Abstract: An antenna and a wireless IC device that includes the antenna are provided for which the manufacturing process is simple and for which there is a low probability of a poor connection occurring between a feeder portion and a radiation electrode. An antenna includes a radiation electrode that is provided on a main surface of an insulator board, a ground electrode and/or a counter electrode that is arranged so as to oppose the radiation electrode, and a magnetic field electrode that is connected to the radiation electrode through a connection portion. The magnetic field electrode is defined by line-shaped electrodes and feeds a signal to the radiation electrode from a feeder portion defined by ends of the line-shaped electrodes through the magnetic field electrode.

Abstract: An antenna device includes a communication module and a loop-shaped conductor. The communication module has a substrate on which an approximately rectangular ground conductor is formed. A non-ground region is provided along one side of the ground conductor. A transmission line and a radiation element are formed in the non-ground region. Further, a capacitance element is connected to the radiation element, and the transmission line is connected to a feeding point of the radiation element. The loop-shaped conductor includes in part a gap that is positioned near the radiation element. With this, an antenna device to be provided in an electronic apparatus having wide directivity in a state of being attached to a garment, a person's body, or the like, and the stated electronic apparatus are configured.

Abstract: A dual band WiFi antenna is provided. The antenna can include a printed circuit board, a first antenna element etched onto the printed circuit board, a second antenna element etched onto the printed circuit board, a first RF choke etched onto the printed circuit board near a first end of the printed circuit board, and a second RF choke etched onto the printed circuit board near the first end of the printed circuit board. The first antenna element and the first RF choke can work within a first frequency band, and the second antenna element and the second RF choke can work with a second frequency band.

Abstract: The present invention refers to an antenna less wireless handheld or portable device comprising a communication module including a radiating system capable of transmitting and receiving electromagnetic wave signals in a first frequency region and in a second frequency region, wherein the highest frequency of the first frequency region is lower than the lowest frequency of the second frequency region. The radiating system comprising a radiating structure and at least one internal port, wherein the input impedance of the radiating structure at the/each internal port when disconnected from the radiofrequency system has an imaginary part not equal to zero for any frequency of the first frequency region; and wherein said radiofrequency system modifies the impedance of the radiating structure, providing impedance matching to the radiating system in the at least two frequency regions of operation of the radiating system.

Abstract: Dual polarization in an antenna structure that results from a number of radiating elements arranged in a loop configuration. The antenna structure is excited by a single coaxial feedline in an interior portion of the antenna structure. The antenna structure may include a ground plane that enables a directional radiation pattern. The antenna structure may also be operational without a ground plane to enable an omnidirectional radiation pattern. The antenna structure may be configured in a number of loop configurations electrically connected to each other by a number of microstrip loops extending in a horizontal and vertical planar direction.

Abstract: An antenna device is provided. The antenna device comprises a first radiation portion and a second radiation portion. The first radiation portion includes a first end and a second end. The second radiation portion is connected to the first end at a connecting part and includes a first arm and a second arm. The first arm and the second arm have different lengths and extend from the connecting part.

Abstract: An antenna device and an electronic device including the antenna device are provided. The antenna device includes a radiation patch in a shape of a flat plate, a first feed point configured in a side region of the radiation patch, and a second feed point configured in another side region of the radiation patch. The first feed point and the second feed point are a same distance from a virtual ground plane formed on the radiation patch, out-of-phase feeding is provided to the first feed point and the second feed point to form a broadside radiation pattern, and in-phase feeding is provided to the first feed point and the second feed point to form an endfire radiation pattern.

Abstract: A monopole antenna printed on a substrate is provided. The monopole antenna includes a main body, an extension part, a connection part, a signal feeding terminal, and a ground plane. The main body has a first terminal and a second terminal, and further includes a width varying part and two folds, wherein the width varying part is disposed between the two folds. The extension part is extended toward a first inclined direction of the monopole antenna. The connection part connects the first terminal of the main body and the extension part. The signal feeding terminal is electrically connected to the connection part. The ground plane is adjacent to the signal feeding terminal.

Abstract: An air-to-ground network communication device may include a conductive groundplane and an antenna element. The conductive groundplane may be disposed to be substantially parallel to a surface of the earth. The antenna element may extend substantially perpendicularly away from the groundplane and may have an effective length between about 1? to about 1.5?. The antenna element may be disposed at a distance of about 0.5? to about 1? from the groundplane.

Abstract: A robust wide-angle antenna and array antenna are provided that enable to obtain a gain not having a high peak and a null over a wide angle, and in which the deviation in radiation characteristics with respect to a dimensional change is small. An array antenna 100 has a plurality of wide-angle antennas 110 arranged in a single row on a surface of one side of a substrate 120. The wide-angle antenna 110 is configured by placing one piece of a fed element 111 and two pieces of a non-fed element 112 on the substrate 120. By rendering the patch length L of the non-fed element 112 to be larger than 0.5 ?g and is equal to or less than 0.75 ?g, the amplitude ratio and phase difference are not affected by a change in the patch length L and wide band antenna characteristics can be obtained.

Abstract: The present technology provides an improved antenna having a conductive first plate, a conductive second plate and a conductive third plate. The conductive first plate and the conductive second plate are disposed and have an electrical connection to form an external antenna structure having a U-shaped cross section. The conductive third plate is disposed parallel to the conductive first plate between the conductive first plate and the conductive second plate and has a proximate edge proximate the electrical connection. The conductive third plate has an electrical length with respect to the proximate edge corresponding to an odd integer multiple of a quarter of a guide wavelength associated with a resonant frequency of the antenna. The conductive third plate forms part of an internal antenna structure.