SELF-MIXING EXPENDABLE
Assignee
US Government
Filed as: UNITED STATES OF AMERICA, THE, AS REPRESENTED BY THE SECRETARY OF THE AIR FORCE
Filed
Apr 23, 1990
Granted
Nov 29, 1994
Location
CENTERVILLE OH US
Abstract
This invention is directed to an expendable which includes an electronic circuit for introducing a simulated Doppler frequency shift. When dropped from an aircraft, the expendable is used to confuse hostile radar operations. In the past, the approach has been to use a high frequency electronic switch (PIN diode) and drive oscillator to change the impedance of the expendable antenna. This invention involves a simplification which combines the electronic switch and its drive oscillator into a single semiconductor component. By connecting a feedback circuit from the collector to the base of a high frequency transistor as well as to the two arms of the antenna, the antenna impedance is changed at the transistor oscillating frequency.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Sep 28, 1990
Rescinded
Aug 18, 1993
Duration
2 years, 10 months
Inventor
- 1JAMES B.Y. TSUI
Record Details
- Patent number
- US 5369408
- Application
- 07517639
- Aerospace match
- Yes
- Dataset source
- 35 USC §181 SO records
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