MAINLOBE CANCELLER SYSTEM
Assignee
Filed
May 5, 1980
Granted
Nov 1, 1994
Location
WALDORF MD US
Abstract
An interference suppression system for cancelling undesired signals recei through the mainlobe of an antenna as well as its sidelobes. The interference suppression system has a main channel input having high gain for receiving desired signals and undesired signals and forming a main channel waveform, and an auxiliary channel input having low gain for receiving desired signals and undesired signals and forming an auxiliary channel waveform. A control circuit senses the relative undesired signal power in the two channels and responds by switching the waveforms in the two channels between two inputs of an interference-reducing circuit according to whether sidelobe or mainlobe interference is present in the main channel. The interference-reducing circuit corrects whichever waveform is fed to its first input in amplitude and phase and combines the corrected waveform with the other waveform at its second input to form an output waveform such that undesired signals in the two input waveforms substantially cancel one another while the desired signal is not cancelled.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Aug 26, 1982
Rescinded
Feb 22, 1994
Duration
11 years, 6 months
Inventor
- 1JAMES P. HANSEN
Record Details
- Patent number
- US 5361074
- Application
- 06153819
- Aerospace match
- Yes
- Dataset source
- 35 USC §181 SO records
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