Citation
Abstract
The design, fabrication, and testing of a coupled-oscillator-based agile beam receiver are described. The receiver uses the Cao–York concept of deriving local oscillator (LO) signals from an array of mutually injection-locked oscillators. These LOs allow downconversion of a received 7.167-GHz (X-band) signal to ultra-high frequency (UHF) for intermediate frequency (IF) combining. The concept involves frequency doubling each 3.372-GHz oscillator signal, mixing each resulting 6.744GHz LO signal with a corresponding 7.167-GHz signal received by each element in the antenna aperture, and then combining the resulting 422.5-MHz IF signals. As suggested by Cao and York, the receive beam is steered by detuning the end oscillators of the array. Antenna range measurements of the circularly polarized response of the receiver as a function of incidence angle and beam position are presented.
Keywords
Details
- Volume
- 42-170
- Published
- August 15, 2007
- Pages
- 1–13
- File Size
- 1.3 MB