Abstract: A parasitic element for a phased-array antenna radiator is provided. The radiator comprises a first dipole radiator including two coplanar monopole radiating elements disposed symmetrically about a radiation axis, a second dipole radiator, arranged orthogonally with respect to the first dipole radiator, including two coplanar radiating elements disposed symmetrically about the radiation axis, and a parasitic gain element, having a substantially elliptical shape, disposed above the first and second dipole radiators and centered on the radiation axis.

Abstract: A phased-array antenna radiator for a super economical cellular communication system is provided. The phased-array antenna radiator comprises two dipole radiators. The first dipole radiator includes a first monopole radiating element supported by a first outer conductor, a second monopole radiating element supported by a second outer conductor, a first inner conductor, disposed within the first outer conductor and extending therethrough, having an upper termination, a first feed strap, attached to the upper termination of the first inner conductor, and a first stub, disposed within the second outer conductor and attached to the first feed strap.

Abstract: The present invention provides a method and an apparatus may increase or extend the range of wireless communication cells for a given throughput in a downlink of a wireless communication system. When transmitting data in a downlink of a plurality of access point cells in a wireless local area network (WLAN), the range of the downlink may be increased for a given throughput under one or more radiated power constraints. The method includes providing a plurality of antennas at an access point to transmit the data to a wireless unit under at least one of a first and a second radiated power constraints. The method further includes using the plurality of antennas for beamforming over a group of sub-carriers subject to the first and/or second radiated power constraints.

Abstract: The present invention provides an antenna comprising at least two arrays comprising respective pluralities of radiating elements in alignment, disposed in parallel planes, and metal screens interposed between the arrays, the antenna being characterized in that each metal screen comprises a bottom portion facing non-radiating portions of the radiating elements and comprising respective plane sheets disposed in planes parallel to the planes of the arrays, and top portions facing the radiating portions of the radiating elements and comprising panels, each forming an angle with the planes of the bottom portions. Preferably, each panel is oriented in alternation in one direction and in another direction on either side of the plane of the bottom portion. Advantageously, each panel comprises two wings connected to a central zone attached to the bottom portion of the screen.

Abstract: A dual polarized variable beam tilt antenna having a superior Sector Power Ratio (SPR). The antenna may have slant 45 degree dipole radiating elements including directors, and may be disposed on a plurality of tilted element trays to orient an antenna boresight downtilt. The directors may be disposed above or about the respective dipole radiating elements. The antenna has a beam front-to-side ratio exceeding 20 dB, a horizontal beam front-to-back ratio exceeding 40 dB, a high-roll off, and is operable over an expanded frequency range.

Abstract: An antenna includes a waveguide having an aperture at a first end and a conducting component at a second end, the conducting component shorting the waveguide and a first set of two orthogonal dipoles, fed in quadrature, the orthogonal dipoles located near the aperture of the waveguide operating close to its dominant mode cut off frequency.

Abstract: The present invention consists in an antenna including at least two arrays of radiating elements disposed linearly and parallel, plane metal screens being interleaved between the arrays. According to the invention screening means, added above the radiating elements, comprise criss-cross metal filaments forming a grid and adapted always to be placed between two radiating elements.

Abstract: The present invention relates to an antenna arrangement comprising a constant current electrical loop, which is arranged to provide a first essentially toroid-shaped radiation pattern, where the antenna arrangement further comprises a first and a second electrical dipole. The electrical dipoles are arranged essentially orthogonal to each other, and are arranged to provide a second and third essentially toroid-shaped radiation pattern which each is essentially orthogonal to the other and to the first essentially toroid-shaped radiation pattern. The constant current electrical loop comprises at least two current path parts, where a current can be applied to each one of the parts, so that the current in each one of the parts essentially will be in phase with each other.

Abstract: A horizontally polarized, substantially omnidirectional broadband transmitting antenna uses parasitic dipoles to increase azimuthal circularity over frequency. Because the magnitude of nulls in the field strength increases with frequency, the dipoles are preferentially sized for optimum reradiation at the highest frequency expected for the antenna. For maximum reinforcement of signal strength in the nulls, the longitudinal axes of the dipoles in a preferred embodiment lie in the center planes of the multiple bays of the antenna, are perpendicular to the proximal axes of radiation, and are centered on the nulls. The dipoles are suitable for use with several antenna styles, and are expressly compatible with crossed bowtie slot antennas.

Abstract: A dual polarized variable beam tilt antenna having a superior Sector Power Ratio (SPR). The antenna may have slant 45 degree dipole radiating elements including directors, and may be disposed on a plurality of tilted element trays to orient an antenna boresight downtilt. The directors may be disposed above or about the respective dipole radiating elements. The antenna has a beam front-to-side ratio exceeding 20 dB, a horizontal beam front-to-back ratio exceeding 40 dB, a high-roll off, and is operable over an expanded frequency range.

Abstract: Generalized non-limiting embodiments include employing a dipole antenna and/or a half slot antenna. Each of the antennas constitutes three mutually perpendicular radiating elements to achieve good isolation and low antenna signal correlation between the three ports. In one generalized non-limiting embodiment the antennas are fabricated on FR-4 epoxy boards. Experimental results show that the antennas resonate a reasonable frequency and have a desired mutual coupling. In addition experimental results for the diversity performance and the MIMO channel capacity are also provided for these antennas and these results show that the herein described antennas offer good diversity gain and the channel capacity can be increased by as much as three times by using these antennas over conventional antennas.

Abstract: A dual polarization base station antenna producing a beam having 3 dB azimuth beamwidth of E(theta) within 5° of the 3 dB azimuth beamwidth of E(phi). The antenna also maintains E(theta) and E(phi) within 3 dB of each other over a wide beamwidth up to 120°, and over a wide bandwidth of 30% of the center frequency. The antenna achieves these performance characteristics through beam shaping structures connected to or located near the ground plane supporting the dipole antenna elements. By adjusting the locations and shapes of the beam shaping structures, specific antennas are designed to meet these design characteristics for different desired beamwidths, including 45°, 60°, 90° and 120°.

Abstract: The polarization-diverse antenna array includes three orthogonal loop antennas having a common center, e.g. together defining a sphere. Each loop antenna includes a loop electrical conductor. Two signal feedpoints are along the loop electrical conductor and separated by a fraction of a length of the loop electrical conductor. Each of the signal feedpoints includes a series signal feedpoint so that a polarization diversity controller coupled thereto may selectively provide vertical, horizontal, lefthand circular and righthand circular polarization for a single loop electrical conductor, including simultaneous (dual) polarizations. These signal feedpoints may supply signals with vertical, horizontal, lefthand circular and righthand circular polarization from each of the three orthogonal look-angles provided by the three loop electrical conductors.

Abstract: A reflect array antenna including a plurality of unit cells. Each cell includes first, second, third and fourth patch antenna segments. An amplifier is coupled between said first patch segment and the second patch segment or the third patch segment and the fourth patch segment. At least one of the patch antenna segments of a first unit cell is electrically connected to a patch antenna segment of a second unit cell. The first patch antenna segment of a first unit cell is electrically connected to a third patch segment of a second unit cell. Each patch segment of each unit cell is electrically connected to a patch segment of a neighboring cell. The first and third patche segments are the input terminals of each cell and the second and fourth patch segments of each cell are the output terminals. The output terminals of each cell are coupled to the output terminals of neighboring cells. This provides an output patch antenna, of greater area, fed by multiple cells.

Abstract: An improved antenna radiating element for a Super-turnstile antenna is provided. The radiating element includes an intermediate conductive rod having an upper terminating rod connected thereto proximal to an upper end thereof and a lower terminating rod connected thereto proximal to a lower end thereof. The terminating rods extend a distance of approximately 0.1 substantially perpendicular to and out from the conductive rod. Each terminating rod further includes a tail section that extends inwardly and substantially parallel to the intermediate conductive rod a distance of approximately 0.25.

Abstract: A phased array antenna includes a substrate that is segmented into a plurality of array tiles. An array of dipole antenna elements is formed on the substrate with each dipole antenna element positioned on a respective one of the array tiles. Each dipole antenna element includes a medial feed portion and a pair of legs extending outwardly therefrom. Adjacent legs of adjacent dipole antenna elements include respective spaced apart end portions forming a gap between the respective end portions and defined by separate tiles. A capacitor coupler is positioned at each respective spaced apart end portion of adjacent legs and bridging a gap for capacitive coupling respective spaced apart end portions of respective adjacent dipole antenna elements together.

Abstract: A crossed dual tag includes two tags each of which comprises, on one plane, a dipole antenna formed with conductors, a feeding part to which an IC chip is connected at the center of the dipole antenna, and a loop-shaped inductance part that is formed between the dipoles of the dipole antenna and connected to the dipoles of the dipole antenna in parallel with respect to the feeding part. The two tags are crossed at right angles, and stacked to contact as closely as possible so that the loops of the inductance parts overlap as wide as possible. A reader/writer of an RFID system sequentially switches the surface of a circular polarized wave of a wireless signal between forward and backward directions, and reads information written to a user memory area from the tag that responds more strongly.

Abstract: A dual-port corporate-feed broadband antenna uses two pairs of crossed dipoles in each bay, fed by a single hybrid coupler in each bay, to support hybrid-mode IBOC® VHF-band broadcasting. Each 3 dB quarter-wave coupler receives a share of an analog FM broadcast signal on a first input and a digital OFDM broadcast signal, 20 dB down, on a second input. The respective coupler output ports drive coaxial lines to tees feeding respective quarter-wave-separated crossed dipoles. The dipoles in each bay are arranged in a square to one side of their coupler, making side mounting practical. The resultant omnidirectional analog and digital radiation patterns have the same circular polarization and opposite phase rotation. Bay spacing for vertical null is a function ((n?1)/n) of the number of bays in the antenna.

Abstract: An antenna is disclosed that comprises a pair of conductive, orthogonal arches and a pair of conductive annular sector plates, wherein adjacent legs of each arch are fastened to one of the annular sector plates and the opposite adjacent pair of legs is fastened to the remaining annular sector plate. The entire antenna structure is spaced apart from a conductive ground plane by a thin dielectric medium. The antenna is driven by a feed conduit passing through the conductive ground plane and dielectric medium and attached to one of the annular sector plates, wherein the two orthogonal arched act as a pair of crossed dipole elements. This arrangement of elements provides a radiation pattern that is largely omni-directional above the horizon.

Abstract: A compact antenna structure having substantially no directivity independent of a tag direction in an RFID tag is proposed. The antenna structure includes a pair of dipole antennas is provided in a cross dipole antenna to be applied to an RFID system for communicating information between a reader/writer and the tag using a high-frequency radio signal. The above pair of dipole antennas further includes lines extending from a feed point and mutually intersecting crosswise, and also triangularly expanded lines from the bent ends of the above lines. Each total length of the above pair of dipole antennas is longer than 2/? of a use frequency ?.

Abstract: An antenna module, in particular for a base station of a cellular mobile radio network, comprising a group of radiating elements capable of receiving and/or transmitting electromagnetic waves having at least two different, preferably linear orthogonal, polarizations, said antenna module further comprising at least one passive decoupling element. Said decoupling element extends with its longest dimension in a direction which is substantially perpendicular to a direction of propagation of said electromagnetic waves and/or substantially parallel to a ground plane and thus improves a degree of decoupling between said polarizations.

Abstract: A broadband dipole including two co-working conductors. The invention is characterized in, that a first of the conductors (11) is comprised of a rod (12) including a substantially centrally located axial hole (2), said hole (2) forming an outer conductor (11) of a coaxial line, and that the second conductor (5) is comprised of a solid rod, and that a metallic wire (5) inserted centrally in the axial hole (2) of the first conductor (11) is connected to the second conductor (5).

Abstract: A dual polarized antenna with at least one dual polarized radiator device comprises a reflector (3) and longitudinal or transverse webs (9, 11) provided at least on its longitudinal side and/or on its transverse side. The improvement is distinguished by the following features: at least one longitudinal web (9) and/or at least two longitudinal webs (9) provided with respect to the radiator device (1, 1?) located in between and/or at least one transverse web (11) and/or at least two transverse webs (11) provided with respect to the radiator device (1, 1?) located in between are positionally changeable directly or at least indirectly by pivoting and/or bending and/or deforming and curving.

Abstract: The present invention relates to an antenna arrangement comprising means (1, 72, 72?, 77, 77?) for providing an approximation of a constant current electrical loop, which is arranged to provide a first essentially toroid-shaped radiation pattern (29), where the antenna arrangement further comprises a first (67) and a second (68) electrical dipole. The electrical dipoles (67, 68) are arranged essentially orthogonal to each other, and are arranged to provide a second (30) and third (31) essentially toroid-shaped radiation pattern which each is essentially orthogonal to the other and to the first essentially toroid-shaped radiation pattern (29).

Abstract: A method and apparatus are provided for constructing a multi-band antenna (10). The method includes the steps of providing a plurality of combination-type dipole assemblies (114, 116, 118, 120, 122, FIG. 7) each defined by a box-type dipole array (36) disposed coaxially within a circular-type dipole array (134), disposing the plurality of combination-type dipole assemblies along a substantially straight line (34) over a ground plane (140) and disposing a plurality of crossed-type dipole antenna arrays along the substantially straight line in alternating order with the plurality of combination-type dipole assemblies.

Abstract: A dual polarized variable beam tilt antenna having a superior Sector Power Ratio (SPR). The antenna may have slant 45 degree dipole radiating elements including directors, and may be disposed on a plurality of tilted element trays to orient an antenna boresight downtilt. The directors may be disposed above or about the respective dipole radiating elements. The antenna has a beam front-to-side ratio exceeding 20 dB, a horizontal beam front-to-back ratio exceeding 40 dB, a high-roll off, and is operable over an expanded frequency range.

Abstract: The invention deals with an antenna arrangement (1) for transmitting and receiving electromagnetic signals, the antenna arrangement (1) comprising: a flat carrier substrate (2) made of dielectric material, a first conducting track (32) applied to a surface of the carrier substrate (2), the first conducting track (32) possessing at one end a point of contact so as to gather thereat or inject thereat the signals and a first dipole (50, 51) at the opposite end, a second conducting track (42) applied to the other surface of the carrier substrate (2), the second conducting track (42) possessing at one end a point of contact so as to gather thereat or inject thereat the signals and a second dipole (60, 61) at the opposite end, the first and the second dipoles (50, 51, 60, 61) forming a crossed dipole.

Abstract: The present invention provides a parabolic dish reflector antenna for wireless communications that is dually polarized for diversity reception purposes while causing minimal visual disturbance for use with cellular base stations and repeaters. The antenna comprises a reflector of paraboloidal shape along both the longitudinal and latitudinal axes of its diameter. The reflector of the antenna is comprised of 4 identical quadrants assembled at the installation site, where each quadrant is made of thin metal ribs with large openings metal mesh stretched and attached to the ribs. The antenna further comprises a feed that is located around the focal point. The antenna feed comprises an open cup-shaped conductive cavity wherein the two orthogonally mounted feeding elements of the antenna located within its volume, are low cost printed circuit board elements.

Abstract: A compact antenna structure having substantially no directivity independent of a tag direction in an RFID tag is proposed. The antenna structure includes a pair of dipole antennas is provided in a cross dipole antenna to be applied to an RFID system for communicating information between a reader/writer and the tag using a high-frequency radio signal. The above pair of dipole antennas further includes lines extending from a feed point and mutually intersecting crosswise, and also triangularly expanded lines from the bent ends of the above lines. Each total length of the above pair of dipole antennas is longer than 2/? of a use frequency ?.

Abstract: A reflect array antenna. The array includes a plurality of unit cells. Each cell includes a first dipole antenna having a first orientation and a first polarization; a second dipole antenna having a second orientation and a second polarization; and an amplifier input coupled inline to said first dipole antenna and output coupled inline to said second dipole antenna. The array further includes N first dipole antennas having a first orientation and a first polarization; M second dipole antennas having a second orientation and a second polarization; and a plurality of unit cells, each cell including an amplifier input coupled inline to a first dipole antenna and output coupled inline to a second dipole antenna. The second orientation and the second polarization are orthogonal to the first orientation and the first polarization. Each amplifier includes a transistor with an input terminal and first and second output terminals.

Abstract: Described is a dipole which may includes a feed line electrically coupled to a first antenna element; a balun electrically coupled to a second antenna element; and a short assembly slidably coupled to the feed line and the balun to create a short circuit at variable distances along the feed line and the balun.

Abstract: A system and method for a wireless link to a remote receiver includes a communication device for generating RF and a planar antenna apparatus for transmitting the RF. The planar antenna apparatus includes selectable antenna elements, each of which has gain and a directional radiation pattern. The directional radiation pattern is substantially in the plane of the antenna apparatus. Switching different antenna elements results in a configurable radiation pattern. Alternatively, selecting all or substantially all elements results in an omnidirectional radiation pattern. One or more directors and/or one or more reflectors may be included to constrict the directional radiation pattern. The antenna apparatus may be conformally mounted to a housing containing the communication device and the antenna apparatus.

Abstract: A multiband base station antenna for communicating with a plurality of terrestrial mobile devices is described. The antenna including one or modules, each module including a low frequency ring element; and a high frequency dipole element superposed with the low frequency ring element. The element includes a ground plane; and a feed probe directed away from the ground plane and having a coupling part positioned proximate to the ring to enable the feed probe to electromagnetically couple with the ring. A dielectric clip provides a spacer between the feed probe and the ring, and also connects the ring to the ground plane. An antenna element is also described including a ring, and one or more feed probes extending from the ring, wherein the ring and feed probe(s) are formed from a unitary piece.

Abstract: A multiple element antenna array is disclosed in which a plurality of panels each support one or more antenna elements. One or more of the panels are preferably interlaced, so as to be affixed to a circuit board. The panels are configured so as to affix to the circuit board at a predetermined angle, which is preferably a right angle to the surface of the circuit board. Each antenna element includes a connection point for establishing a circuit board connection. The present multiple element antenna array is preferably incorporated into a wireless device; preferably an access point for a wireless local area network (WLAN). The wireless device further includes a radio transceiver comprising a plurality of circuit elements mounted on the circuit board.

Abstract: A dual polarized broadband base station antenna for wireless communication systems is disclosed. The present invention employs a dual polarized boxed arrangement radiation element with high isolation between polarization channels. Plural radiating elements project outwardly from the surface of a ground plane. The antenna elements are paired dipoles.

Abstract: An ultra wideband antenna includes at least one radiator for transmitting and/or receiving an electromagnetic wave, the radiator having a planar elliptical shape for the whole UWB frequency band and one having at least one elliptical gap for omitting the transmission and reception of an electromagnetic wave at a predefined wavelength ?, whereby the length of the gap depends on the predefined wavelength ?.

Abstract: Briefly, in accordance with one embodiment of the invention, an antenna may comprise a first radiating element to provide a first axis of polarization, and a second radiating element to provide a second axis of polarization. The first axis of polarization may be orthogonal or orthogonal at least in part, to the second axis of polarization. The first and second axes together may result in an omnidirectional, or at least partially omnidirectional, gain pattern for the antenna. RF signals may be propagated on the first and second axes using the same communication standard on both axes, and/or using a different communication standard on each of the axes. In accordance with one or more embodiments, the first axis of polarization may be utilized for a first MIMO communication channel, and the second axis of polarization may be utilized for a second MIMO communication channel.

Abstract: A broadband antenna including both electric and magnetic dipole radiators is provided herein. The broadband antenna may be referred to as a “P×M antenna” and may include a pair of magnetic loop elements, each having multiple feed points symmetrically spaced around the loop element. The broadband antenna may also include an electric dipole element arranged between the pair of magnetic loop elements. In general, the electric dipole element and the magnetic loop elements may be coupled together through a network of transmission lines, as opposed to being incorporated into a single radiative element.

Abstract: The present invention is directed to a broadband electric-magnetic antenna apparatus and method. The present invention teaches a variety of electric antennas suitable for use in the present invention as well as a variety of magnetic antennas suitable for use in the present invention. Combination of a broadband electric antenna element and a broadband magnetic element to create a broadband electric-magnetic antenna system is discussed. This invention further teaches systems for using a broadband electric magnetic antenna system to radiate or receive quadrature signals.

Abstract: A very inexpensive and on-site tunable design for a vertically polarized panel antenna system, suitable for the FCC digital broadcast 700 MHz range is provided. Bowtie-like shaped antennas having machine-stampable planar elements with an adjustable separation are configured with a stripline feed. The stipline feed enables easy feeding of doublet systems to allow the configuration of an array of vertically polarized antennas. The various components of the antenna system can be easily tuned, enabling rapid deployment and quick operation.

Abstract: A dual-band antenna for communication device includes a first dipole antenna, a second dipole antenna and a coaxial feed line. The first dipole antenna includes a first radiating element disposed at a first plane and a first ground portion disposed at a second plane. The second dipole antenna includes a second radiating element disposed at a first plane and a second ground portion disposed at a second plane. The feed line includes an inner conductor electrically connecting to the first and second radiating elements and an outer conductor electrically connecting to the first and second ground portions. The first and second radiating elements both further include a compensating portion for improving radiating patterns of the first and second dipole antennas and a broadband portion for increasing frequency bands of the first and second dipole antennas.

Abstract: A dual band, dual pole, variable downtilt, 90 degree azimuth beamwidth antenna (10). The antenna includes dipole elements (12, 14) forming both a PCS band and a cellular band antenna. The PCS band antenna has two sections disposed each side of the cellular band antenna, the elements of each being positioned 90° with respect to the other. A microstrip feed network formed upon a common PC board (18) feeds the respective dipole elements, and has serpentine portions with a corresponding dielectric member slideable thereover to establish the phase of the associated dipole antennas and achieve a linear downtilt of the respective antenna array. A slide rod adjustment assembly (100) provides unitary movement of the dielectric members between two different slide rods. These dielectric members are secured with adhesive to the respective slide rods to achieve good dielectric control and no use of hardware.

Abstract: An omnidirectional resonant antenna in a half-plane or in the whole plane comprises a single radiating electric conductor (26) having at least three abutted wires (28, 30, 32), the length of each wire and the orientation of the wires relative to one another determining the global orientation of the electric conductor. The wires are oriented along at least three different spatial directions and the lengths of the wires are designed to obtain an omnidirectional global radiation of the electric conductor in a half-plane or in the whole plane.

Abstract: An improved antenna includes a coupling element in the form of a rod. The coupling element is electrically conductive and extends transversely with respect to the reflector plane is provided on the front face of the reflector. A mount device has an axial hole in the interior. The axial hole in the mount device can be placed on the coupling element which is in the form of a rod, such that the mount device and the coupling element which is the form of a rod are capacitively coupled, while avoiding any electrically conductive contact.

Abstract: A radio LAN master station system which provides long distance communication and suffers from small interference by another system located inside and/or outside of a service area comprises a transceiver, and a plurality of directional antennas each directed to a respective section with some angular spacing, through a power distributor which couples said transceiver with said antennas. Polarization plane of any antenna is orthogonal to polarization plane of an adjacent antenna.

Abstract: Described is a universal dipole which may include a feed line coupled to a first fitting; a balun coupled to a second fitting; a first variable length antenna element coupled to the first fitting; a second variable length antenna element coupled to the second fitting; a support plate holding the feed line and the balun at a fixed spacing, the support plate including a short circuit path between the feed line and the balun; and a sliding short assembly attachable between the feed line and the balun to create a short circuit at variable distances along the feed line and the balun.

Abstract: A conformal, load bearing, phased array antenna system having a plurality of adjacently positioned antenna aperture sections that collectively form a single, enlarged antenna aperture. The aperture sections are each formed by intersecting wall panels that form a honeycomb-like core having a plurality of electromagnetic radiating elements embedded in the wall panels that form the core. The aperture wall panels are assembled onto a single, multi-faceted back skin, bonded thereto, and then machined to produce a desired surface contour. A radome formed by a single piece of composite material is then bonded to the contoured surface. Antenna electronics printed wiring boards are also bonded to an opposite side of the back skin. The contour is selected to match a mold line of a surface into which the antenna system is installed. The antenna is able to form an integral, load bearing portion of the structure into which it is installed.

Abstract: A phased array antenna aperture able to form a structural, load bearing portion of another structure, for example, a portion of a mobile platform. The antenna aperture is formed with a plurality of radiating elements sandwiched between prepreg fabric plies to form independent wall sections having a plurality of electromagnetic radiating elements embedded therein. The wall sections are secured in a honeycomb arrangement to form an array of cells of radiating elements. The manufacturing methods described herein enable arrays of widely varying sizes and shapes to be created and used as structural, load bearing portions of a wing, fuselage, door panel or other area of a mobile platform. The antenna aperture is lightweight because it does not include the weight of parasitic support components typically required in the construction of phased array antenna apertures.

Abstract: An antenna aperture and method of assembling same. The antenna aperture forms a honeycomb-like core structure with dipole radiating elements integrally formed into structural wall portions of the honeycomb-like core. The antenna aperture has sufficient structural strength to form a structural portion of a mobile platform, while still being sufficiently light in weight for weight-critical applications such as with airborne mobile platforms.

Abstract: An antenna for receiving electromagnetic signals comprises: a ground plane with a length and having a vertical axis along the length. A plurality of dipole radiating elements, the radiating elements are comprised of first and second co-located, orthogonal dipoles, the dipoles are aligned at first and second predetermined angles with respect to the vertical axis, the radiating elements and ground plane produce first electromagnetic fields in response to said electromagnetic signals. A plurality of supports, the supports are connected to the ground plane and perpendicular to the vertical axis and placed between selected of the plurality of dipole radiating elements. A plurality of metallic parasitic elements are placed in a selected of said plurality of supports, the first electromagnetic fields exiciting currents in said metallic parasitic elements, the currents creating second electromagnetic fields, the second electromagnetic fields canceling with portions of the first electromagnetic fields.