Title :
Coupled-oscillator scanning technique for receiver applications
Author :
Xudong Cao ; York, R.A.
Author_Institution :
Dept. of Electr. Eng., California Univ., Santa Barbara, CA, USA
Abstract :
Scanning oscillator techniques previously developed for transmitter applications have been successfully applied to the receive mode. Scanning is achieved through frequency detuning in a coupled set of local oscillators. The design of a five element receiving array is presented, demonstrating a 25/spl deg/ scan range. The array consists of a local oscillator array, mixers, an antenna array and an IF summer. The local oscillator array is composed of five varactor tuned FET VCOs which are designed to work at 8.6 GHz. An injection-locking technique is described for low-phase noise applications.
Keywords :
antenna arrays; antenna radiation patterns; coupled circuits; injection locked oscillators; microwave antenna arrays; microwave oscillators; receiving antennas; scanning antennas; varactors; voltage-controlled oscillators; IF summer; SHF; antenna array; coupled oscillator scanning; five element receiving array; frequency detuning; injection locking technique; local oscillator array; low phase noise applications; mixers; receiver applications; varactor tuned FET VCO; Antenna arrays; Equations; Frequency conversion; Injection-locked oscillators; Local oscillators; Mixers; Optical coupling; Phase noise; Phased arrays; Receiving antennas;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1995. AP-S. Digest
Conference_Location :
Newport Beach, CA, USA
Print_ISBN :
0-7803-2719-5
DOI :
10.1109/APS.1995.530261
