Research/Patents/US 5828344
US 5828344

RADIATION SENSOR

Assignee

SECRETARY OF STATE FOR DEFENCE IN HER BRITANNIC MAJESTY'S GOVERNMENT OF THE UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND, THE

Filed

Jul 23, 1991

Granted

Oct 27, 1998

Location

WORCS EN GB

Abstract

A radiation sensor for the microwave and millimeter-wave regions incorporates a lens having two parallel focal planes, these being defined by a polarization-selective reflector grid within the lens. One focal plane is occupied by a receive array of crossed dipole antennas with respective mixer diodes. One dipole of each antenna couples to a local oscillator signal and the other couples to a receive signal reflected by the grid. These signals are mixed by the diodes to produce intermediate frequency signals for subsequent processing. The other focal plane is occupied by a transmit array of separately activatable polarization switching antennas arranged to define a range of transmit beam directions. This focal plane may alternatively be occupied by a second receive array.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Feb 6, 1992

Rescinded

May 8, 1997

Duration

5 years, 3 months

Inventor

  • 1CHRISTOPHER J. ALDER

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Record Details

Patent number
US 5828344
Application
07744781
Aerospace match
Yes
Dataset source
35 USC §181 SO records

More from this assignee

Back to patent indexSource: USPTO 35 USC §181 secrecy order records