A Retrodirective Array with Interference Rejection Capability
- Resource Type
- Conference
- Authors
- Goshi, Darren S.; Leong, Kevin M. K. H.; Itoh, Tatsuo
- Source
- IEEE MTT-S International Microwave Symposium Digest, 2005. Microwave Symposium Microwave Symposium Digest, 2005 IEEE MTT-S International. :395-398 Jun, 2005
- Subject
- Components, Circuits, Devices and Systems
Engineered Materials, Dielectrics and Plasmas
Fields, Waves and Electromagnetics
Aerospace
Communication, Networking and Broadcast Technologies
Photonics and Electrooptics
Interference suppression
Adaptive systems
Array signal processing
System performance
Adaptive arrays
Digital signal processing
Interference rejection
null-scanning
phased arrays
retrodirective arrays
- Language
- ISSN
- 0149-645X
A retrodirective array with interference rejection capability is presented. Signals from two sources (one desired and one interfering) are first detected and then a null is formed in sub-arrays at each element in the retrodirective array and directed toward the unwanted signal. The null-forming subarray pattern can be multiplied to the retrodirective pattern through application of the principle of pattern multiplication. The system continues to track the desired signal through its purely analog retrodirective function, requiring no digital signal processing and maintaining almost instantaneous self-tracking. Demonstration of interference suppression shows promise in furthering the functionality of retrodirective arrays in addition to the already high-speed self tracking benefits.