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WO/1990/001223A1 |
A millimetre wave antenna for television reception comprises an offset parabolic reflector (3) surrounded by an integral skirt (4), against which a feed-horn (7) may be located. The antenna may be moulded from plastics material using the...
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WO/1989/008932A1 |
An aerial for electromagnetic radiation comprises a lens (65) of dielectric material transparent to the radiation and having a dielectric constant substantially equal to 3.414. A convex surface portion is provided with a metallic layer (...
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WO/1989/007838A1 |
A patch array microwave antenna comprising spaced sub-arrays each consisting of a fed patch (1) and at least a pair of parasitic patches (3a, 3b) fed from the non radiative (as herein defined) edges of the fed patch (1); in a second embo...
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WO/1989/006446A1 |
A small aperture forward facing antenna (3) for receiving far-field electromagnetic signals comprising an outer conical shell and interiorly of which are formed at least first and second conically flared, conductive, stages (4, 10) of in...
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WO/1988/010521A1 |
Flat antennas such as Fresnel zone plates may be used to receive microwave signals. Such antennas are mounted on windows (4) and focus the signals on a horn feed (10). This invention discloses a flexible Fresnel zone plate (1) adapted to...
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WO/1988/009066A1 |
A microwave lens (20) may be used to steer the beam of an array antenna (5) having radiating elements connected by feed lines (9) to array ports (3) of a microwave lens. In order to provide a continuously variable range of steering angle...
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WO/1988/007268A1 |
An enclosed terrestrial antenna system comprises two dish-shaped members having substantially identical configurations, each of which is a surface of revolution. Each member has a central concave parabolic area surrounded by an upstandin...
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WO/1988/004837A1 |
A steerable beam antenna system for use in satellite communication systems and including a main reflector and an antenna array having a plurality of feed elements. The antenna array is positionable at or near at least one focal point of ...
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WO/1988/004836A1 |
An indoor antenna having at least two planar non-parallel structures (1, 2, 6, 7) in which the planar structures include or support antenna elements (3, 4, 5, 9 and 12), the antenna elements including driven elements (3, 9) and parasitic...
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WO/1988/004480A1 |
A composite reflector structure (28) for a spacecraft antenna system (20, 50) is formed of a honeycomb material, transparent to electromagnetic radiation, and having inner and outer arcuate surfaces (30, 32) substantially uniformly space...
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WO/1988/002189A1 |
Passive resonant halfwave antenna element for antennas operating in the VHF or UHF frequency band that consists of a pair of symmetrically arranged spaced half elements (1, 2) each of them comprises a cross member (5) and respective dive...
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WO/1988/001442A1 |
A frequency selective screen (18) is employed as a diplexer to separate each of one or more radio frequency signals into first and second bands of frequencies by allowing the first band of frequencies to pass therethrough and reflecting ...
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WO/1988/001456A1 |
A satellite communications system employs separate subsystems for providing broadcast and point-to-point two-way communications using the same assigned frequency band. The broadcast and point-to-point subsystems employ an integrated sate...
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WO/1988/001445A1 |
A satellite communications system employs separate subsystems for providing broadcast and point-to-point two-way communications using the same assigned frequency band. The broadcast and point-to-point subsystems employ an integrated sate...
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WO/1988/001441A1 |
A satellite communications system employs separate subsystems for providing broadcast and point-to-point two-way comunications using the same assigned frequency band. The broadcast and point-to-point subsystems employ an integrated satel...
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WO/1988/001105A1 |
An antenna array includes a plurality of non-parasitic antenna drivers (22). A conductive member (14) serves as a ground plane and reflector. Each non-parasitic driver (22) is coupled to an energy transformer (18), by an energy conductor...
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WO/1987/007771A2 |
A reflector antenna with a dish-shaped main reflector (10), and a self-supporting feed (11) for the transmission or reception of polarized electromagnetic waves. The feed (11) consists of a tube (12) which is attached to the middle of th...
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WO/1987/007771A1 |
A reflector antenna with a dish-shaped main reflector (10), and a self-supporting feed (11) for the transmission or reception of polarized electromagnetic waves. The feed (11) consists of a tube (12) which is attached to the middle of th...
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WO/1987/007772A1 |
A radiating element comprises a groundplane, a dielectric layer and a conductive pattern comprising a folded dipole (20, 21), a feed line (18, 19) for the dipole and a plurality of closely spaced directors (22), all lying in a common pla...
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WO/1987/006066A1 |
A wideband hybrid horn antenna in which a circular section horn (1) is fed by a circular feed guide (3). A dielectric polyrod (7) is cantilever mounted in the throat end (4) of the horn (1) and is tapered to provide a match to the guide ...
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WO/1987/003746A1 |
An optical limited scan antenna system. The invention is a dual lens (70, 80) type array antenna system with a small array feed network (65). The system includes a bootlace-type microwave aperture lens (80) with an array of radiating ele...
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WO/1987/002193A1 |
The optical device includes a pair of interfaces (14, 16) spaced one generally behind the other. The rear interface (16) is arranged to deflect incident parallel radiation of radio frequency, while the other (14) is positioned to interse...
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WO/1986/006550A1 |
In the preferred embodiment the compact antenna range (10) includes two shaped reflectors, a subreflector (14) and a main reflector (16) arranged in an offset configuration. Each reflector is shaped so that the reflected wave front from ...
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WO/1986/005327A1 |
A horn antenna with a cylindrical and an expanded (horn-shaped) waveguide for radiating or receiving polarized electromagnetic waves. The waveguide wall is partially or wholly covered with one or more grids (12) of electrical conducting ...
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WO/1986/003344A1 |
A high gain-area-product antenna using a dual mode feel element is designed to provide substantially uniform gain coverage over an angular region. The primary pattern (6) emitted at the antenna feed (2) is modified to make the H-plane di...
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WO/1986/001339A1 |
A microwave polariser in the form of a wedge (2, 3) at the termination of a rod (1) of dielectric material. Preferably the wedge tapers exponentially in order to provide a good impedance match. Circularly polarised radiation propagating ...
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WO/1986/000761A1 |
A high bandwidth microwave antenna feed comprises a spigot (4) of relatively high dielectric constant protruding from a conventional hollow waveguide (3) and a generally conical member (12) of relatively low dielectric constant fitted co...
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WO/1985/004527A1 |
A conical horn microwave antenna has a reflector (15) positioned at the large end of a conical feed horn (17) which has the side walls (26) of the horn (17) wider than the projected effective area of the reflector (15) such that microwav...
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WO/1984/004427A1 |
An antena (10A, 20, 30) which exhibits a low profile. The antenna includes a counterpoise (10A) of electrically conductive material and a passive element (20) oriented substantially parallel thereto. The ends (22, 24) of the passive elem...
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WO/1984/004209A1 |
Antenna structure (10) has a primary reflective surface (12) over which is positioned a subreflector surface (14). Support webs (32, 34 and 36) are made of low dielectric loss insulating material and are adhesively secured in slots in th...
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WO/1983/001711A1 |
Hybrid mode feeds which are capable of handling very wide bandwidths. In the present feed arrangements, a dominant TE11 mode is converted to the HE11 hybrid mode which is then launched. The TE11 to HE11 mode conversion is achieved by ins...
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WO/1983/000952A1 |
An electronically scanned antenna system having a linear array of endfire elements (12). The endfire elements are laterally spaced between about 0.3 lambda to 0.9 lambda apart, preferably about 0.55 lambda apart, to enhance the effects o...
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WO/1982/004358A1 |
The deviation in operating frequency which antenna system elements can handle without serious transmission line mismatch is increased by constructing the antenna such that the inner portions (40, 42) of its legs (40, 48 and 42, 50) are f...
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WO/1982/004357A1 |
A feed horn for a reflector-type microwave antenna comprises a smooth-walled conical horn (10) and a lining of absorber material (22) on the inside wall of the horn for reducing the width of the RPE (radiation pattern envelope) in the E ...
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WO/1982/002120A1 |
A reflector antenna, in which the face of a reflector (5) is divided into a plurality of partial reflectors and the faces of the partial reflectors are given different heights, by attaching metal tapes (6) of different thicknesses onto t...
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WO/1982/002119A1 |
Directional antenna system for short and ultra short waves of which the elements (1, 2, 3) are tuned without a tuning device such as a series or parallel resonance circuit. The system is tuned by the fact that the imaginery inductive com...
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WO/1982/000545A1 |
A portable, lightweight, folding parabolic reflector antenna for reception of microwave signals includes an axial wave guide tube (14) which constitutes the main structural supporting member of the antenna, a ten to fifteen foot diameter...
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WO/1981/003617A1 |
The skin surface of a patient may be irradiated with the microwaves of a frequency of 250 to 353 MHz (i.e., a wavelength of about 85 to 120cm.). A conductive metal housing (10) having an open bottom and closed walls on all other sides ov...
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JP2024072362A |
The present invention provides an antenna device for use with microwave, millimeter wave, or terahertz wave electromagnetic waves, capable of achieving a wide range of beamforming. [Solution] The antenna device 30 comprises an antenna 31...
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JP2024067814A |
An object of the present invention is to provide a dual horn for angular diversity and an antenna device using the same, which is low cost, has high performance, and stable quality. [Solution] A dual horn for angle diversity includes a m...
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JP7485452B2 |
To provide a broadband non-directional antenna that can be made in a compact size of a thin and low profile.A broadband non-directional antenna 10 according to the present disclosure comprises: a ground plate 101 that has a ground plane ...
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JP2024064837A |
An object of the present invention is to realize a device for adjusting the intensity distribution and phase distribution of electromagnetic waves guided through a waveguide, which can be manufactured in a short time and at low cost. [So...
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JP7482100B2 |
A radiation detection apparatus (100) includes a housing (111) having an incident face (111a) and a side face (111e), a reflective member (115) accommodated within the housing, the reflective member having a reflective face (115a) which ...
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JP7479345B2 |
Exemplary embodiments are described herein for compactable antennas and methods of making such an antenna. Exemplary compactable antennas include a support structure and a reflector surface. The support structure may directly or indirect...
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JP2024518818A |
The antenna may have features that improve ice buildup on the antenna. For example, the antenna may include a feed structure between the reflector and the radome. The radome may cover at least a portion of the antenna and/or a component ...
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JP2024060400A |
An object of the present invention is to improve convenience when communicating between a communication device having an antenna device and peripheral devices. [Solution] A booster antenna has a set consisting of a pattern forming a coil...
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JP2024517921A |
An antenna apparatus for an automotive radar application comprises an antenna assembly comprising a front surface disposed with at least one antenna aperture configured to receive an incident signal in the form of primary radiation impin...
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JP7470854B1 |
An object of the present invention is to provide a wireless communication device that can extend communication distance and improve wireless communication functions compared to conventional devices. [Solution] A parasitic wire type wirel...
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JP7470853B1 |
An object of the present invention is to provide a wireless communication device that can extend communication distance and improve wireless communication functions compared to conventional devices. [Solution] A parasitic wire type wirel...
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JP2024054457A |
[Problem] To provide a flat antenna capable of receiving terrestrial digital broadcasting, and to maintain the performance of the flat antenna even when a metal conductor is used in close proximity to the flat antenna. [Solution] The fir...
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