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7394428 |
Single pole printed antenna
A printed antenna includes a smaller antenna member attached onto the circuit board, one or more greater antenna members attached onto the circuit board and electrically coupled to the smaller...
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7126552 |
Device for transmission of electromagnetic radiation through a wall
Device for transmission of electromagnetic radiation through a wall. In order to couple transmission-reception means ( 2, 4 ) located on each side of the wall ( 6 ), this device comprises two...
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7084822 |
Dual feed common radiator antenna system and method for broadcasting analog and digital signals
A system and method is provided for transmitting analog and digital signals using a single traveling wave structure with radiators attached thereto, to form broadside radiation of the digital and...
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6515628 |
Dual polarization patch antenna
A dual polarization patch antenna comprising a patch, first and second pairs of orthogonally disposed probes feeding said patch, and a first feed network for feeding said first pair of probes from...
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6509873 |
Circularly polarized wideband and traveling-wave microstrip antenna
The present invention is an antenna comprising a microstrip having upper and lower layers for producing leaky wave radiation. Circularly shaped patches are located on the two layers for circularly...
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H002028 |
Frequency-scan traveling wave antenna
A frequency-scan traveling wave antenna receives radio frequency (RF) energy at an input port, passes the energy through a quarter wave transformer to a first radiator element in an array of...
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6094172 |
High performance traveling wave antenna for microwave and millimeter wave applications
A traveling array antenna which operates at microwave/millimeter frequencies is disclosed in which a like number of radiator elements are arranged in two mirror image branches, an RF signal feed is...
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6087778 |
Scalable helicon wave plasma processing device with a non-cylindrical source chamber having a serpentine antenna
A plasma processing device (25) including a vacuum chamber (27) for processing a substrate (29) and a source chamber (26) for generating a plasma is disclosed where the source chamber (26) has a...
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6016127 |
Traveling wave antenna
A flat strip-like radiator is angled along the width of the strip to form radiating arms of predetermined length and angles to radiate a design radiation patter. The flat strip is secured to a...
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5923295 |
Circular polarization microstrip line antenna power supply and receiver loading the microstrip line antenna
A circular polarization microstrip line antenna transmits and receives right-handed and left-handed circularly polarized waves by one microstrip line antenna. A dielectric sheet 3 is laid on a...
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5644321 |
Multi-element antenna with tapered resistive loading in each element
An antenna having efficient operation over a wide bandwidth, a low standing wave ratio and constant radiation characteristics over a wide bandwidth includes in one embodiment a set of four linear...
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5608415 |
High-frequency signal transmission system with conical conductors and bias resistor
A high-frequency signal transmission system for use as a microwave antenna or filter has a plurality of cascaded conical or planar inner conductors each having a unitary exponential gradient, a...
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5469179 |
Parametrically amplifying traveling-wave antenna
A parametrically amplifying traveling-wave antenna utilizing parametric amplification by strong coupling or resonance between an induced wave and an incident sky wave, the antenna including a...
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5380386 |
Molded metallized plastic microwave components and processes for manufacture
A method of fabricating a microwave waveguide component wherein a plurality of joinable thermoplastic members are first formed. The members, when joined, comprise a microwave waveguide component...
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5367307 |
Microwave plate antenna printed on a substrate
The present invention relates to a micro-wave plate antenna, especially for Doppler radar for example, of the type with a Janus configuration, made up of a plurality of linear sub-networks parallel...
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5210541 |
Microstrip patch antenna arrays
A patch antenna array having multiple beam-forming capability is formed as a feed network (15) on a lower microstrip substrate with patches (13) overlaying these on an upper substrate. The patch...
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5144327 |
Source of microwave radiation for an electronic sweeping antenna which absorbs reflected energy
Disclosed is a source of microwave radiation, namely a source enabling the absorption of multiple reflections for the illuminating of a lens in order to form an electronic sweeping antenna. The...
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5140336 |
Non-resonant antenna for wind profilers
An antenna system particularly suited for wind profiling produces a radio beam which can be oriented in each of four directions and optionally in a fifth, vertical direction and four intermediate...
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5087921 |
Array beam position control using compound slots
A waveguide slotted array is disclosed, employing compound slots in a waveguide broad wall. The phase of the voltage excited in the slot is controlled by the slot offset and angle of inclination...
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5006861 |
Antenna
An antenna comprises a conductive helix (10) positioned parallel to a ground plane (12). One end (14) of the helix is coupled to the ground plane (12), while the other end (16) is left open. Radio...
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5006858 |
Microstrip line antenna with crank-shaped elements and resonant waveguide elements
A microstrip line antenna generally used for receiving an electric wave from an artificial satellite, which comprises a plane dielectric substrate and a plurality of crank-shaped microstrip lines...
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4963892 |
Microwave plane antenna with two arrays which have beams aligned in the same direction
A microwave plane antenna including rows comprising pairs of parallel conductive line antenna elements configured as a pair of out-of-phase square waves and a signal feed circuit of strip lines...
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4529988 |
Travelling wave antenna with side lobe elimination
The arrangement is for cancelling unwanted sidelobes in travelling-wave arrays, especially the back lobe where the main beam approaches the end-fire direction; the array should have high symmetry,...
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4459594 |
Stripline antennas
In a prior form of stripline antenna, the strip turns through successive right-angle corners to form successive multi-cornered cells in which the lengths of the longitudinal and transverse strip...
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4459593 |
Stripline antennas
Stripline antenna arrays of the type in which the strip turns through successive right-angle corners to form successive four-cornered cells, the lengths of the longitudinal and tranverse strip...
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4293858 |
Polarization agile meander line array
A polarization-agile radar array employing at least one linear array having a periodic first meander line and a second meander line which is a close-spaced, mirror image of the first such line,...
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4220956 |
Collinear series-fed radio frequency antenna array
A collinear series-fed antenna array formed from two spaced-apart electrical conductors extending parallel to one another in a longitudinal direction and having regularly spaced complementary...
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4021810 |
Travelling wave meander conductor antenna
A travelling wave conductor antenna including a ground plane. The antenna consists of meander-structure conductors made of a conductive material, zigzagging at right angles or at almost right...
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3893120 |
Omnidirectional ring antenna for EW amplitude comparison direction finding
Amplitude comparison DF apparatus for measuring the direction of incoming signals. The apparatus comprises an omnidirectional ring antenna for receiving incoming RF signals. The antenna consists of...
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3818480 |
METHOD AND APPARATUS FOR CONTROLLING THE DIRECTIVITY PATTERN OF AN ANTENNA
The present disclosure relates to a method and apparatus for varying the directional characteristics of a nonresonant antenna system by varying the impedance of the antenna terminating impedance...
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3810186 |
LEAKY COAXIAL CABLE
This invention provides a leaky coaxial cable suitable for vehicle communication. The leaky coaxial cable of this invention has on the surface of its outer conductor a number of slots which are...
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3806946 |
TRAVELLING WAVE CHAIN ANTENNA
A travelling wave chain antenna including a ground plane, having a radiation beam, the direction of which can be varied by altering the frequency, wherein the antenna consists of four-sided links...
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3596271 |
MICROWAVE ANTENNA HAVING AN UNDULATING CONDUCTOR WITH VARIABLE PITCH AND AMPLITUDE
The antenna array disclosed comprises an undulatory conductor which is capable of transmission and reception of energy, in which the amplitude and pitch of the undulations are progressively altered...
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3523297 |
DUAL FREQUENCY ANTENNA
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3449752 |
HELICAL ANTENNA ELECTROMAGNETICALLY COUPLED TO RESONANT LINE
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3364489 |
Traveling wave antenna having radiator elements with doubly periodic spacing
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3337873 |
Directional antenna comprising an inclined nonreflecting radiating element and vertical counterpoise
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3325815 |
Ramp feed antenna
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3302207 |
Traveling wave strip line antenna
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3290688 |
Backward angle travelling wave wire mesh antenna array
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3276020 |
Low profile surface wave antenna
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3225351 |
Vertically polarized microstrip antenna for glide path system
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3080523 |
Electronically-controlled-scanning directional antenna apparatus utilizing velocity modulation of a traveling wave tube
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2971193 |
Multiple slot antenna having radiating termination
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2947988 |
Traveling wave antenna
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2945227 |
Improvements in ultra short wave directive aerials
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2937259 |
Ultra-high frequency heating apparatus
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2929065 |
Surface wave antenna
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2929063 |
Antenna
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2880417 |
Traveling wave device
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