Trw Limited

Wayne W Lam

John Joseph Berenz

Pei-Ming Daniel Chow

Paul S Lee

Yoshio Saito

Jay S Pearlman

Yiu C Ngan

A focal plane imaging array (FPIA) (16) for use in a direct detection imaging device (10) for conducting radiometric imaging at microwave and millimeter-wave frequencies is disclosed as having an internal electronic calibration source (36). The plurality of energy detecting pixel elements (14) which comprise the FPIA (16) include a detection circuit (34) and a calibration circuit (36). The calibration circuit (36) is uni-directionally coupled to the detection circuit (34) to allow a known calibration signal 'pulse' to be introduced into the detection circuit (34). The calibration pulse is processed by the pixel detection circuit and the output signal is compared with the pixel's responsivity value. Adjustments in the pixel gain and sensitivity may then be made as appropriate.

Focal plane imaging array with internal calibration source

A 'packageless' diode chip is integrated into a microstrip patch antenna. Application of DC current to the device results in efficient radiation of high powered microwave frequency signals directly into free space.

Active patch antenna transmitter

Growing community of inventors

Torrance, CA, United States of America

Wayne W Lam