Yazaki North America, Inc.

Other

Sensor Technologies & Systems, Inc.

Gary M Hamman

Terry B Wilson

John Edward Bjornholt

Scott H Walker

Steve Miller

Doug W Taylor

Douglas W Taylor

A wave guide scanner assembly has an antenna constructed of a parabolic dish that refelects radar signals from a transceiver and reflective plate to a target. Radar signals reflected from the target are then antenna, sent back to the reflective plate, which sends the radar signal to the transceiver. The transceiver can be positioned at the focal point of the antenna, thereby omitted the reflective plate. The radar signals are then transmitted directed to the antenna from the transceiver, and sent to the target by the antenna. Reflected radar signals are then reflected directly back to the transceiver from the antenna. The antenna oscillates back and forth.

Mechanically scanned parabolic reflector antenna

A flexible wave guide joint is located between a transceiver and oscillating antenna in a vehicular collision warning system. The flexible joint includes a multiple portion wave guide feed. One portion of the wave guide feed is fixed in position and coupled to the transceiver while another portion of the wave guide feed is coupled to the moving antenna. The wave guide feed portions are separated by an air gap to permit oscillation of the antenna relative to the transceiver.

Flexible wave guide joint

A wave-scanning antenna is disclosed that does not require a rotary joint. The antenna produces a collimated beam that can be scanned through 360 degrees. The beam is directed perpendicular to the antenna's axis of rotation to form a disc-like surveillance volume, or at an angle above or below the perpendicular to form a cone-shaped surveillance volume. The radar's structure contains a transmitter and receiver coupled to a horn protruding through open centers of the support bearing and driven gear into the antenna housing. Energy emitted by the horn proceeds upward until deflected through an angle of 90 degrees by an angled reflector located on the axis of rotation. The energy is collected by a dielectric lens and focused into a collimated beam. Reflected energy is collected by the lens and directed by the reflector to the horn, where it is fed to a waveguide coupled to the receiver.

Surveillance radar scanning antenna requiring no rotary joint

A radar apparatus has an inclined slot wave guide array to form a narrow azimuth beam and a dielectric lens in front of the array to form a narrow elevation beam. The radar apparatus is particularly useful for motor vehicular collision warning systems. The inclined slot wave guide forms an antenna which is driven to oscillate back and forth at a small angle. The dielectric lens is fixed in position relative to the slotted wave guide antenna. The combination of the slotted array for forming a narrow horizontal pattern in combination with the dielectric lens for forming a vertical pattern provides an arrangement that is readily scannable.

Radar apparatus including a wave guide array and a dielectric lens

An apparatus for the detection of any intruder passing through an electronic fence is disclosed. The electronic fence is formed by a millimeter wave radar positioned at one end of the fence and a plurality of reflectors placed along the floor of the fence as well as on a structure at its far end. The fence is formed of a plurality of electromagnetic beams traversing between the radar antenna or antennas and each of the reflectors. A sufficient number of beams inhabit the fence volume to make traversing the fence by an intruder without detection essentially impossible. The radar reflection from the intruder's person is used to report the location of an intruder attempting to traverse the electronic fence near the radar end and is the secondary means of detection at greater ranges where breaking of one or more electromagnetic beams constitutes the primary means of detection.

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Scottsdale, AZ, United States of America

Gary M Hamman