Focal Plane Antenna Array for Millimeter Waves.
Abstract
A millimeter wave imaging system receives millimeter wave radiation and provides video imaging signals based thereon. The system comprises an imaging lens for receiving incoming radiation; a focal plane antenna array disposed at the focal plane of the lens on which radiation received by the lens is focussed; and signal processing and display circuitry for processing the output of the antenna array and for producing and displaying corresponding video imaging signals. The focal plane antenna array comprises a planar array of a plurality of conical horns and circular waveguides which, in use, are disposed at the focal plane of the lens; and a stripline detector assembly coupled to the waveguides for detecting the radiation received thereby. The stripline detector assembly comprises a dielectric substrate having a plurality of microstrip conductors embedded therein, each microstrip conductor being coupled to a respective one of the waveguides, and a diode detector being connected to each microstrip conductor. A solid state commutator samples the output of the detectors and provides a resultant video imaging control signal. Patent applications. (RRH)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 29, 1989
- Accession Number
- ADD014306
Entities
People
- William M. Waters
Organizations
- United States Department of the Navy