Ems Technologies Canada, Limited

Canadian Astronautics Limited

Peter John Wood

Peter Charles Strickland

Timothy Edward Best

Senglee Foo

An antenna comprising at least one dipole, the dipole comprising a pair of arms drooping relative to a plane orthogonal to a central axis, end portions of the arms being bent back toward the central axis. In one form of the invention the arms are bent back toward the central axis in at least one plane which is parallel to the central axis, and in another form of the invention the dipole arms are bent in the same rotational direction out of a pland which includes the central axis.

Crossed-drooping bent dipole antenna

A method of operating a SAR system comprised of emitting a sequence of pulses toward a target, alternating characteristics of pairs of successive pulses, receiving reflected pulses from the target, passing the received reflected pulses through a filter, modifying parameters of the filter in step with the transmitted pulses to match the characteristics of the successive pulses in the event a time delay between pulse transmission and reception of a pulse reflected from a target is a fraction greater than an even multiple of a pulse period, and modifying the parameters of the filter in anti-synchronism with the successive pulses in the event a time delay between pulse transmission and reception of a pulse reflected from a target is less than a fraction greater than an even multiple of a pulse period.

Synthetic aperture radar

A composite coupling aperture for coupling energy between two waveguides having a thickness dimension t perpendicular to the aperture-plane characterized by a non-uniform cross-section along the thickness dimension.

Composite waveguide coupling aperture having a varying thickness

A planar slotted waveguide antenna array having a front, radiating surface and a back-plane, a length dimension L and a width dimension W, comprising a plurality of radiating waveguides parallel to the width dimension; a plurality of co-planar radiating apertures in each of said plurality of radiating waveguides constituting said radiating surface; a feeder waveguide along at least part of the length dimension contiguous a predetermined edge of the array; and a plurality of coupling apertures for coupling microwave energy between said feeder waveguide and each of said plurality of radiating waveguides.

Growing community of inventors

Nepean, Canada

Peter John Wood