A coherent optically controlled phased array antenna system
- 1 September 1993
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Microwave and Guided Wave Letters
- Vol. 3 (9) , 293-295
- https://doi.org/10.1109/75.244857
Abstract
A true-time delay, optically controlled phased array antenna system whereby a large number (100-2500) of antenna elements can receive a series of microwave delays via use of a coherent optical carrier signal is described. Both transmit and receive antenna arrays are described, and the signal-to-noise ratio for a 128 channel system is calculated to be approximately 40 dB with an optical link loss of only approximately 3 dB for a 1 GHz instantaneous bandwidth at a wavelength of lambda 1.55 mu m. It is shown that the use of coherent optically controlled phased array antennas provides improved controllability and immunity from noise and system losses over other architectures currently being investigated.Keywords
This publication has 9 references indexed in Scilit:
- +21 dBm erbium power amplifier pumped by a diode-pumped Nd:YAG laserIEEE Photonics Technology Letters, 1992
- Integrated four-wavelength DFB laser array with 10 Gb/s speed and 5 nm continuous tuning rangeIEEE Photonics Technology Letters, 1992
- Wide continuous wavelength tuning of a narrow linewidth DBR laserIEEE Photonics Technology Letters, 1992
- Star couplers with gain using multiple erbium-doped fibers pumped with a single laserIEEE Photonics Technology Letters, 1991
- The first demonstration of an optically steered microwave phased array antenna using true-time-delayJournal of Lightwave Technology, 1991
- Multichannel coherent optical communications systemsJournal of Lightwave Technology, 1987
- Phase diversity techniques for coherent optical receiversJournal of Lightwave Technology, 1987
- Extremely low-noise facet-reflectivity-controlled InGaAsP distributed-feedback lasersJournal of Lightwave Technology, 1986
- Frequency-locking of external cavity semiconductor lasers using an optical comb generatorElectronics Letters, 1986