Abstract: An antenna device includes: a pair of first elements that are arranged on a first plane; and a pair of second elements that are arranged on a second plane parallel to the first plane such that a polarized wave direction of the pair of second elements is orthogonal to that of the pair of first elements. Each element of the pair of first elements and the pair of second elements includes a portion that acts as a self-similarity antenna or an antenna that acts based on similar operating principle to the self-similarity antenna. In one embodiment, each element of the pair of first elements and the pair of second elements includes two arms that extend in a direction away from each other from a proximal end portion to which a feed point is connectable.

Abstract: Embodiments of the present disclosure relate to a biconical antenna assembly for electromagnetic compatibility testing. The biconical antenna assembly has an antenna feeding point, a first antenna structure and a second antenna structure. The first antenna structure and the second antenna structure extend from the antenna feed point towards opposite directions. The biconical antenna assembly includes at least one additional capacitive structure that is attached to a most distal point of the first antenna structure or the second antenna structure from the antenna feed point.

Abstract: An operating method of a wireless communication device configured to perform wireless communication with a cell. The method involves identifying, from a downlink signal received from the cell, an electromagnetic field state associated with an antenna of the wireless communication device. A power compensation mode for compensating transmission power of a sounding reference signal is selected based on the identified electromagnetic field state. The transmission power of the sounding reference signal is compensated based on the selected power compensation mode. The sounding reference signal is transmitted with the compensated transmission power through the antenna to the cell.

Abstract: An antenna device includes: a pair of first elements that are arranged on a first plane; and a pair of second elements that are arranged on a second plane parallel to the first plane such that a polarized wave direction of the pair of second elements is orthogonal to that of the pair of first elements. Each element of the pair of first elements and the pair of second elements includes a portion that acts as a self-similarity antenna or an antenna that acts based on similar operating principle to the self-similarity antenna. In one embodiment, each element of the pair of first elements and the pair of second elements includes two arms that extend in a direction away from each other from a proximal end portion to which a feed point is connectable.

Abstract: A spiral antenna apparatus, which may comprise an antenna element disposed in two spiral arms in a vertical zigzag pattern. The apparatus may comprise an electromagnetic band gap cavity comprising: a ground plane, one or more layers of conductive patches, at least one pillar extending between the ground plane and a top layer of the one or more layers, and low dielectric foam disposed to fill gaps between the ground plane and the one or more layers and to fill gaps between the one or more layers. The apparatus may comprise a corrugated radio frequency choke disposed within the electromagnetic band gap cavity. At least one of the antenna element, the balun element, the electromagnetic band gap cavity, and the radio frequency choke may be fabricated using additive manufacturing.

Abstract: An antenna includes first and second conductive antenna bodies. The first conductive antenna body has first and second opposing ends with an enlarged width medial portion therebetween, a first slot extending from at least adjacent the first end to at least adjacent the second end, and first antenna feed points adjacent the first slot for a first polarization. The second conductive antenna body has first and second opposing ends with an enlarged width medial portion therebetween, a second slot extending from at least adjacent the first end to at least adjacent the second end, and second antenna feed points adjacent the second slot for the first polarization. The first end of the second conductive antenna body is adjacent the second end of the first conductive antenna body. Third antenna feed points are between the first and second conductive antenna bodies for a second polarization.

Abstract: An RF antenna assembly is to be positioned within a wellbore in a subterranean formation for hydrocarbon resource recovery. The RF antenna assembly includes a series of tubular dipole antennas to be positioned within the wellbore, each tubular dipole antenna having a pair of dipole elements, and an RF transmission line extending within the series of tubular dipole antennas. The RF antenna assembly includes a respective coupling structure between each pair of dipole elements and between the series of tubular dipole antennas, each coupling structure including a dielectric tube mechanically coupling adjacent dipole elements, and a tap connector carried by the dielectric tube and electrically coupling the RF transmission line to a corresponding dipole element.

Abstract: An antenna structure is disclosed. The antenna structure includes a symmetrizing portion and two radiation portions. The symmetrizing portion has an axis and two radiation portions are symmetrically connected to the symmetrizing portion along the axis. Each of the two radiation portions is formed in a boot shape within a quadrilateral region having a first edge with a first length, a second edge with a second length, a third edge with a third length and a fourth edge with a fourth length. Each radiation portion includes a first side having a length being equivalent to the first length, a second side having a length being equivalent to the second length, a third side having a length being at least one-sixth of the third length, a fourth side having a length being at least one-fifth of the fourth length, and a fifth side connecting the third side and the fourth side and forming an arc, wherein the arc follows a quarter trajectory of an ellipse.

Abstract: According to various aspects, exemplary embodiments are provided of bow tie antennas and antenna assemblies that include the same. In an exemplary embodiment, a bow tie antenna includes a pair of antenna elements. Each antenna element includes spaced apart end portions defining an open portion such that the antenna element has an open shape. The open shape is closed by dielectric material disposed between the spaced apart end portions and extending across a gap separating the spaced apart end portions, whereby the dielectric material and pair of antenna elements cooperatively define a closed bow tie shape for the bow tie antenna.

Abstract: An antenna array includes a plurality of antenna elements configured in a flare such that each of the plurality of antenna elements is uniformly spaced apart from at least one adjacent antenna element. Each of the plurality of antenna elements is coupled in a common area, and each of the plurality of antenna elements extends radially outward from the common area. A method of arranging antenna elements in an antenna array includes configuring a plurality of antenna elements in a flare such that each antenna element is uniformly spaced apart from at least one adjacent antenna element, and each of the plurality of antenna elements extends radially outward from a common area; and coupling each of the plurality of antenna elements in the common area.

Abstract: An antenna includes first and second conductive antenna bodies. The first conductive antenna body has first and second opposing ends with an enlarged width medial portion therebetween, a first slot extending from at least adjacent the first end to at least adjacent the second end, and first antenna feed points adjacent the first slot for a first polarization. The second conductive antenna body has first and second opposing ends with an enlarged width medial portion therebetween, a second slot extending from at least adjacent the first end to at least adjacent the second end, and second antenna feed points adjacent the second slot for the first polarization. The first end of the second conductive antenna body is adjacent the second end of the first conductive antenna body. Third antenna feed points are between the first and second conductive antenna bodies for a second polarization.

Abstract: Technologies are presented for providing circularly polarized antenna topologies based on multiple bent-dipole elements over a ground plane configuration. In some examples, Moxon based cross radiating elements may be fed through a hybrid 90° quadrature coupler. The radiating element may be widened and tapered relative to a standard bent-dipole configuration forming bow tie structures with approximately 90° bends to achieve broadband operation. The tapered branches may be split into two sub-branches and the bend angle increased to further increase bandwidth and gain of the antenna.

Abstract: According to various aspects, exemplary embodiments are provided of bow tie antennas and antenna assemblies that include the same. In an exemplary embodiment, a bow tie antenna includes a pair of antenna elements. Each antenna element includes spaced apart end portions defining an open portion such that the antenna element has an open shape. The open shape is closed by dielectric material disposed between the spaced apart end portions and extending across a gap separating the spaced apart end portions, whereby the dielectric material and pair of antenna elements cooperatively define a closed bow tie shape for the bow tie antenna.

Abstract: Techniques for providing multi-directional receiving antenna arrays are described herein. According to an embodiment, an apparatus includes an antenna array including multiple antennas and an orientation system. The orientation system includes multiple orientation marks and multiple alignment marks. At least one of the multiple antennas is configured to be positioned toward a respective station transmitter location based at least partially on an alignment of one of the multiple orientation marks relative to one of the multiple alignment marks.

Abstract: This invention discloses a design and fabrication of a high performance HDTV Antenna to receive public airwave signals. The subject antenna consists of a high efficient broadband element and a pair of reflecting surfaces. The reflecting surfaces produce a focusing effect. The backside radiation of the antenna is redirected, making it more energized to receive signals from the front side. This is a very desirable feature in a weak signal environment. The reflecting surfaces provide additional benefits in reducing unwanted multiple reflecting signals which often cause unstable pictures. The broadband radiating element composed a pair of triangular shape radiators which is excited by a new art infinite balun. With this design, it is unnecessary to reposition the antenna in order to receive all available public channels. A fixed location is generally adequate to provide good reception to all stations.

Abstract: A broadband radiation unit includes first and second pairs of symmetric dipoles operable to transmit communication signals and to receive communication signals. The first pair of symmetric dipoles has a polarization that is orthogonal to that of the second pair of symmetric dipoles. The first and second pairs of symmetric dipoles together define an annular structure. A plurality of baluns are associated with the first and second pairs of symmetric dipoles such that a given one of the baluns is associated with a respective symmetric dipole of the pairs of symmetric dipoles. Each one of the baluns feeds a balanced current to its associated symmetric dipole. Each symmetric dipole of the first and second pairs of symmetric dipoles has two unit arms which are disposed on and arranged symmetrically about its associated balun.

Abstract: A dipole antenna for wide-band communications. Some embodiments relate to a multilayer planar high-gain antenna for ultra-wideband communications having a broadband dipole structure, a tuning plate and a feed arranged roughly parallel to one another and separated from one another with dielectric materials. In one embodiment, the antenna includes four conductive layers, a reflector, which is preferably rectangular, a broadband bowtie preferably of bowtie shape, a feed structure and a parasitic element or tuning patch.

Abstract: A transparent thin plate including a transparent substrate in a sheet form, a mesh layer formed on a surface of the transparent substrate and made of an opaque material having a structure wherein an outline of meshes is made of bands that are very thin and have a substantially equal width, and having a light transmittance of 50% or more. The transparent thin plate also includes a colored layer that is arranged in a state in which the colored layer is laminated in a partial area of the mesh layer and on the surface of the mesh layer, and has a color different from that of the opaque material constituting the mesh layer.

Abstract: A modular reconfigurable indoor antenna is disclosed. The antenna may include a bottom piece, a top piece, and a plurality of vertical members. The top piece may include an Ultra High Frequency (UHF) reception element. The plurality of vertical members may be disposed between the bottom piece and the top piece and coupled therewith. At least one of the plurality of vertical members may include a Very High Frequency (VHF) reception element.

Abstract: A bicone antenna is provided with high bandwidth and beneficial return loss performance. The antenna is dipole based and thus its radiation pattern is not strongly influenced by shape and size of a nearby ground plane. A parasitic element comprising a conductive band encircling the antenna's feed structure improves matching, gain flatness, and makes the antenna less susceptible to detuning.

Abstract: The antenna assembly includes first and second adjacent antenna elements each having a tapered or conical antenna body with a base and an apex opposite the base. An elongated or cylindrical antenna body extends from the base of the conical antenna body, and includes a plurality of adjacent elongated or cylindrical antenna body portions, and a respective dielectric member separating adjacent cylindrical antenna body portions. Each of the first and second adjacent antenna elements are aligned along a common longitudinal axis with respective apexes in opposing relation to define a dipole antenna. Increased radiation pattern bandwidth and satisfactory pattern on the horizon may be achieved in such a biconical-type antenna.

Abstract: A bowtie antenna is presented. The antenna includes a substrate with a metal layer. The bowtie-shaped dipole antenna is formed in the metal layer with two triangle elements and a gap between the two triangle elements. The bowtie-shaped antenna is shaped to receive signals in a lower portion of the UHF band. A pair of transmission lines is formed in the metal extending from the gap. At least one pair of tuning stubs is formed in the metal. The pair of tuning stubs extends from the transmission lines and is tuned to a frequency band that is different than the lower portion of the UHF band.

Abstract: A vertically polarized dipole or bicone antenna is positioned cylindrically with in many cylindrical layers of polarizing grids that slowly rotate the incident field to cross 0 degrees, i.e., 90 degrees to the horizon, and to attenuate or minimize the effects of gain nulls from reflections off of the innermost grid layer. Such an antenna is used for detecting both horizontal and vertical polarized signals over a broad bandwidth whereby the response to both polarizations is equal.

Abstract: A planar dipole antenna is described. The antenna may include a ground element, a feed point, a matching element, and first and second radiating elements disposed on a substrate, and a feed point. The ground element may have a substantially rectangular shape and the feed point may be arranged adjacent to the ground element. The matching element may be connected to the feed point and may include a central bar connected to a first and second arm. The first and second arms may be substantially symmetrically disposed on the substrate in respect to the central bar. The first and second radiating elements may have substantially trapezoidal shapes and may be extend from the first and second arms of the matching element, respectively. The first and second radiating elements may be substantially symmetrically disposed on the substrate in respect to the central bar of the matching element.

Abstract: A dipole antenna includes a first radiating body and a second radiating body. The first radiating body has a first radiating part and a second radiating part. The area of the second radiating part is larger than that of the first radiating part. The second radiating body is disposed opposite to the first radiating body and has a third radiating part and a fourth radiating part. The area of the third radiating part is larger than that of the first radiating part. The area of the second radiating part is larger than that of the fourth radiating part. The first radiating part or the third radiating part has a feeding point. The second radiating part or the fourth radiating part has a ground point. The first radiating part is electrically connected to the third radiating part. The second radiating part is electrically connected to the fourth radiating part.

Abstract: An antenna comprises: a closed and insulating receiving housing; a radiating portion received in the receiving housing and including a liquid metal; a grounding portion received in the receiving housing and including a liquid metal; a pair of wires respectively connected to the radiating portion and the grounding portion and extending out of the receiving housing; and two air chambers respectively located on the ends of the radiating portion and the grounding portion.

Abstract: An antenna assembly may include first and second adjacent antenna elements each including a conical antenna body having a base and an apex opposite the base. The antenna assembly may also include a cylindrical antenna body extending from the base of the conical antenna body, and a choke assembly including a choke shaft having a proximal end coupled to the conical antenna body and a distal end opposite the proximal end. The choke assembly may include at least one choke member carried by the distal end of the choke shaft in longitudinally spaced relation from an opposing end of the cylindrical antenna body to define at least one choke slot. Each of the first and second conical antenna bodies may be aligned along a common longitudinal axis with respective apexes in opposing relation to define a symmetrical biconical dipole antenna.

Abstract: An integrated circuit (IC) antenna structure includes a micro-electromechanical (MEM) area, a feed point, and a transmission line. The micro-electromechanical (MEM) area includes a three-dimensional shape, wherein the three dimensional-shape provides an antenna structure. The feed point is coupled to provide an outbound radio frequency (RF) signal to the antenna structure for transmission and to receive an inbound RF signal from the antenna structure. The transmission line electrically coupled to the feed point.

Abstract: An antenna is provided. The antenna includes a signal line, a ground line, a first radiation element and a second radiation element. The first radiation element is electrically connected to the signal line. The first radiation element includes a first U-shaped section and a first extension section. The signal line is connected to an end of the first U-shaped section, and the first extension section is connected to the other end thereof. The first U-shaped section includes a first notch toward a first direction. The second radiation element is electrically connected to the ground line. The second radiation element includes a second U-shaped section and a second extension section. The ground line is connected to an end of the second U-shaped section, and the second extension section is connected to the other end thereof. The second U-shaped section includes a second notch toward the first direction.

Abstract: A broadband antenna system is disclosed. The antenna system relates to a modified conical structure, wherein the feed region of the cone is cut away to form a hollow “coneless” cylinder, and the distribution of one or more tapered feed points around the circumference of the cylinder allows a plurality of feed lines, cables, piping, or other structures to be run through the center of the antenna without interfering with the performance of the antenna system. The invention further relates to a stacked broadband antenna system wherein additional coneless elements, as well as other types of antennas or devices, may be stacked collinearly on, or disposed coaxially to, the cylindrical antenna structure, and fed, powered or operated via the plurality of feed lines, cables, piping or other structures. The overall system may thus provide a wide range of transmitting, receiving, sensing and other capabilities.

Abstract: Embodiments of the present invention include antennas for transmitting and receiving electromagnetic signals. The antennas are configured to transmit a first electromagnetic signal at full power via a first set of radiating elements and to transmit the first electromagnetic signal at an attenuated power via a second set of radiating elements to decrease side lobes associated with the transmission of the first electromagnetic signal. The antennas are configured to receive a second electromagnetic signal having an associated first power level via the second set of radiating elements and to form an aggregated electromagnetic signal having a second power level that is a multiple of the first power level. The antennas are configured to attenuate the aggregated signal to form an attenuated electromagnetic signal having a third power level to facilitate uniform reception of the second electromagnetic signal and tapered transmission.

Abstract: This invention discloses a design and fabrication of a high performance HDTV Antenna to receive public airwave signals. The subject antenna consists of a high efficient broadband element and a pair of reflecting surfaces. The reflecting surfaces produce a focusing effect. The backside radiation of the antenna is redirected, making it more energized to receive signals from the front side. This is a very desirable feature in a weak signal environment. The reflecting surfaces provide additional benefits in reducing unwanted multiple reflecting signals which often cause unstable pictures. The broadband radiating element composed a pair of triangular shape radiators which is excited by a new art infinite balun. With this design, it is unnecessary to reposition the antenna in order to receive all available public channels. A fixed location is generally adequate to provide good reception to all stations.

Abstract: An antenna assembly may include first and second adjacent antenna elements each including a conical antenna body having a base and an apex opposite the base. The antenna assembly may also include a cylindrical antenna body extending from the base of the conical antenna body, and a choke assembly including a choke shaft having a proximal end coupled to the conical antenna body and a distal end opposite the proximal end. The choke assembly may include at least one choke member carried by the distal end of the choke shaft in longitudinally spaced relation from an opposing end of the cylindrical antenna body to define at least one choke slot. Each of the first and second conical antenna bodies may be aligned along a common longitudinal axis with respective apexes in opposing relation to define a symmetrical biconical dipole antenna.

Abstract: An ultra-wideband antenna includes a zone, an excitation means, and an adapting means. The zone is defined between first and second shaped surfaces such as to form a radiating element. The first and second shaped surfaces are also rotationally symmetrical in relation to a longitudinal axis of the antenna, and are disposed opposite one another in respect of a plane that is orthogonal to the longitudinal axis and that contains a horizontal axis. The first and second shaped surfaces are configured to control the characteristics of an electromagnetic field in the zone such that the antenna has an essentially-constant gain in the frequency band along an azimuth plane. The excitation means is configured to supply a signal in a localized manner in a central region of the zone. The adapting means is configured to promote a localized coupling between the excitation means and the zone.

Abstract: A broadband bicone antenna supports frequency selective control of electrical length. Frequency selective control of the electrical length of an antenna can provide an antenna exhibiting two or more different electrical lengths where use of each length depends upon the operating frequencies of the signals. The electrical length of the bicone antenna may be reduced in response to higher operating frequencies. Such reduction in electrical length at higher frequencies can provide improved antenna radiation patterns for the antenna. Further, the electrical length of the bicone antenna may be increased in response to low frequency operation. Such increase in electrical length may improve VSWR performance at lower frequencies. Simultaneous operation of the bicone antenna at varied electrical lengths for varied frequency bands can provide improved broadband performance of the antenna.

Abstract: An antenna apparatus utilizing an aperture of transmission line, which is connected to a first transmission line having a predetermined characteristic impedance, includes a tapered line portion, and an aperture portion. The tapered line portion is connected to one end of the transmission line, and the tapered line portion includes a second transmission line including a pair of line conductors. The tapered line portion keeps a predetermined characteristic impedance constant and expands at least one of a width of the transmission line and an interval in a tapered shape at a predetermined taper angle. The aperture portion has a radiation aperture connected to one end of the tapered line portion. A size of one side of the aperture end plane of the aperture portion is set to be equal to or higher than a quarter wavelength of the minimum operating frequency of the antenna apparatus.

Abstract: The antenna includes an electrically conductive antenna body having a polyhedral shape with opposing first and second ends and a medial portion therebetween. The medial portion of the electrically conductive antenna body is wider than the opposing first and second ends thereof, and the electrically conductive antenna body has a slot therein extending from at least adjacent the first end to at least adjacent the second end. The polyhedral antenna has an omnidirectional pattern, is horizontally polarized and broad in bandwidth above a lower cutoff frequency.

Abstract: The antenna includes a substrate, a radiation part and a ground part. The radiation part is disposed on the substrate. The outside frame of the radiation part is similar to D-type. The radiation part has at least a hole inside. The ground part is also disposed on the substrate. The ground part has at least a hole inside. Positions of a feeding terminal and a ground terminal of the antenna are not limited to center regions of the sides of the radiation part and the ground part.

Abstract: In an antenna configuration (4) with two antenna arms (5, 6) arranged in a V-shape, two coupling zones (13, 14) for electrically coupling to respective terminals of an integrated component (15) are provided in the region of the ends (7, 8) of the antenna arms (5, 6) lying close together, wherein each of the two antenna arms (5, 6) in addition comprises a coupling region (20, 21) at a distance from its coupling zone (13, 14), and each coupling region (20, 21) is designed for electrically coupling to a terminal of a further electronic component (22).

Abstract: A dipole antenna includes a first radiating body and a second radiating body. The first radiating body has a first radiating part and a second radiating part. The area of the second radiating part is larger than that of the first radiating part. The second radiating body is disposed opposite to the first radiating body and has a third radiating part and a fourth radiating part. The area of the third radiating part is larger than that of the first radiating part. The area of the second radiating part is larger than that of the fourth radiating part. The first radiating part or the third radiating part has a feeding point. The second radiating part or the fourth radiating part has a ground point. The first radiating part is electrically connected to the third radiating part. The second radiating part is electrically connected to the fourth radiating part.

Abstract: An ultra-wideband antenna includes a zone, an excitation means, and an adapting means. The zone is defined between first and second shaped surfaces such as to form a radiating element. The first and second shaped surfaces are also rotationally symmetrical in relation to a longitudinal axis of the antenna, and are disposed opposite one another in respect of a plane that is orthogonal to the longitudinal axis and that contains a horizontal axis. The first and second shaped surfaces are configured to control the characteristics of an electromagnetic field in the zone such that the antenna has an essentially-constant gain in the frequency band along an azimuth plane. The excitation means is configured to supply a signal in a localised manner in a central region of the zone. The adapting means is configured to promote a localised coupling between the excitation means and the zone.

Abstract: A wide-band antenna includes radiation devices and an electric supply line. The radiation devices include a first radiation device and a second radiation device. The electric supply line includes a coaxial cable. The first and the second radiation devices are conductor members placed opposite to each other across an electric supply point. The conductor members are line-symmetrical with respect to a straight line passing through the electric supply line. The first radiation device is connected to an inner core of the electric supply line. The second radiation device is connected to an outer conductor of the electric supply line. A conductor member including two electrode portions is connected to the second radiation device. The two electrode portions are placed such that a longitudinal axis thereof is parallel to the electric supply line and is line-symmetrical with respect to the straight line passing through the electric supply line.

Abstract: An antenna apparatus utilizing an aperture of transmission line, which is connected to a first transmission line having a predetermined characteristic impedance, includes a tapered line portion, and an aperture portion. The tapered line portion is connected to one end of the transmission line, and the tapered line portion includes a second transmission line including a pair of line conductors. The tapered line portion keeps a predetermined characteristic impedance constant and expands at least one of a width of the transmission line and an interval in a tapered shape at a predetermined taper angle. The aperture portion has a radiation aperture connected to one end of the tapered line portion. A size of one side of the aperture end plane of the aperture portion is set to be equal to or higher than a quarter wavelength of the minimum operating frequency of the antenna apparatus.

Abstract: The biconical loop antenna is the dual and compliment to the biconical dipole antenna, and has broadband omnidirectional horizontally polarized radiation. The antenna includes a conductive antenna body having first and second opposing ends with a medial portion therebetween. The antenna body has a slot extending from at least adjacent the first end to at least adjacent the second end, and the medial portion of the antenna body is wider than the opposing ends. First and second body portions may be conical antenna elements connected together at their respective bases. Antenna feed points are at the medial and chine portion of the antenna body adjacent the slot.

Abstract: The dipole antenna includes a first antenna element assembly and a second antenna element assembly arranged in a dipole antenna configuration. The first antenna element assembly has one or more conical antenna elements, and the second antenna element assembly has a series of conical antenna elements with each successive conical antenna element at least partially within a prior conical antenna element. Each of the first and second antenna dipole assemblies may also include a respective disk antenna element and a filament antenna element. The antenna has a stable beamwidth and broad bandwidth over a range of frequencies.

Abstract: A compact L-band antenna includes a plurality of elongated radiating elements arranged in a conical configuration. Ends of the radiating elements are attached to provide a single conductor end, which is attached to a connector structure.

Abstract: In an antenna system for transmitting and receiving, in association with a radio device, electromagnetic radiation has an E-field component and an H-field component. The electromagnetic radiation corresponds to a radio frequency power signal having a current and a voltage at a radio frequency. The antenna system includes a first radiating element and a second radiating element, each comprising a conductive material. The second radiating element is spaced apart from, and in alignment with, the first radiating element. A phasing and matching network is in electrical communication with the first radiating element, the second radiating element and the radio device. The phasing and matching network aligns the relative phase between the current and the voltage of the radio frequency power signal so that the H-field component of the corresponding electromagnetic signal is nominally in time phase with the E-field component.

Abstract: A broadband antenna incorporating both electric and magnetic dipole radiators includes a tapered feed, such as a bow-tie feed, having a central feedpoint and first and second outer regions displaced from the central feedpoint. One or more conducting loop elements are connected between the outer regions of the tapered feed. Top loading capacitive elements extending from each of the outer regions may also be provided.

Abstract: Improved antennas and antenna systems for use in cellular and other wireless communications systems. A folded mono-bow antenna element is provided which has a substantially omnidirectional radiation pattern in a horizontal plane and shows variation in gain in an elevation plane depending upon the size of an associated ground plane. The folded mono-bow antenna element comprises a main bowtie radiating element and parasitic element wherein the main bowtie radiating element and parasitic element are separated by a dielectric material having a dielectric constant preferably less than 4.5 and, in some cases, less than or equal to 3.3. Various antenna arrays and methods of making the same are also provided.

Abstract: A broad band electrically small antenna comprising opposed wire triangular outline shaped elements connected to a source or receiver at their respective apexes and a second set of wire outline shaped elements connected to the base members of the first set of triangular shaped or "bowtie" elements and extending in planes substantially normal to the plane of the triangular outline elements. The antenna exhibits a low antenna factor and relatively high gain and a relatively low voltage standing wave ratio at relatively low frequencies in the range of 20 to 200 megahertz, for example. The antenna may be connected to a log periodic dipole antenna array to provide broad band reception and transmission capability.