High Phase Accuracy Active Phased Array Module For Multi-Function Radars
C.J. Ward,J. R. Forrest,P. Malamis,A. A. Salles,M.E. Brinson,A. J. Parsons +5 more
- 15 Jun 1982
- pp 179-181
TL;DR: In this paper, an S-band (2.7-3.1GHz) transmit/receive phased array module with 40W output for 100µs pulses at 10% duty cycle is described.
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Abstract: The paper describes an S-Band (2.7-3.1GHz) transmit/receive phased array module giving 40W output for 100µs pulses at 10% duty cycle. The module incorporates closed-loop phase control to reduce to a low level any phase errors between the input reference signal and the output. Initial work on the development of a fibre optic interface for input of the coherent r.f. reference signal is also described.
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References
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A. A. Salles,J. R. Forrest +1 more
TL;DR: In this paper, the output of a GaAlAs laser, modulated at 2.345 GHz, was used to optically injection lock a GaAs metal semiconductor field effect transistor oscillator.
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Optical control of IMPATT microwave oscillators
J.R. Forrest,Alwyn J. Seeds +1 more
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TL;DR: In this paper, a method of locking IMPATT oscillators by illuminating the IMPATT diode with a low-power laser beam, amplitude modulated at microwave frequency, is described, and the effect of reverse saturation current modulation by the laser beam is presented and predictions of locking ranges obtainable are made.
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Design concepts for active phased-array modules
J. Austin,J.R. Forrest +1 more
- 01 Aug 1980
TL;DR: In this article, a review of microwave devices for power generation and low-noise amplification in active array modules is given, and full attention is given to the use of microwave phase-locked loops to achieve the required gain and accurate phase control.
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Delay reduction techniques in phase-locked loop amplifiers
TL;DR: A satisfactory solution to the problem of providing loop gain with low delay has been developed and successfully applied to a microwave phase-locked system and gives superior performance compared with conventional high speed thick-film amplifier alternatives.
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Phased Arrays - Current Technology and Future Prospects
J.R. Forrest
- 01 Oct 1981
TL;DR: In this article, the basic techniques of electronic scanning in phased arrays and current implementations of those techniques are discussed for both radar and satellite communications, and the role of microwave semiconductor devices in future active arrays and the importance of monolithic technology is emphasised.
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