상세정보
학술지
4-20 GHz GaAs True-Time Delay Amplifier MMIC
- 발행일
- 201712
- 출처
- IEEE Microwave and Wireless Components Letters, v.27 no.12, pp.1119-1121
- ISSN
- 1531-1309
- 출판사
- IEEE
- 초록
- A wideband amplifier with a fine control of the true-time delay (TTD) has been successfully implemented using a commercial 0.5-챙m GaAs pHEMT monolithic microwave integrated circuit (MMIC) process. The proposed circuit effectively combines switching elements into an artificial transmission line structure in a distributed amplifier to achieve an adjustable TTD which enables time delay control with gain in a wider band than other GaAs-based TTD circuits. The TTD amplifier MMIC achieves a controllable delay of 9 ps, a gain of 9 to 2 dB, and a typical return loss of more than 10 dB from 4 to 20 GHz. The proposed TTD amplifier can be effectively integrated into a multifunction chip based on GaAs semiconductors for wideband active electronically scanned array or phased array systems.
- KSP 제안 키워드
- Active electronically scanned array(AESA), Distributed amplifier(DA), Fine control, GaAs pHemt, Microwave monolithic integrated circuits(MMIC), Phased array systems, Return loss(RL), Switching element, Time Delay Control, artificial transmission line, microwave integrated circuit