T/R modules for airborne radar: the challenges ahead

McLachlan, Anton; Dunn, Michael; Morrison, Grant; Forbes, Jeffrey M.; Peall, R.G.; Krier, Peter; Dry, R.

doi:10.1109/eumc.2005.1610049

Cited by 1 publication

(1 citation statement)

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“…송수신 모듈은 송신 신호를 증폭하여 안테나 복사 소 자에 전달하고, 복사소자에서 전달받은 수신 신호를 저잡 음 증폭하는 기능을 가지고 있다. 기존 송수신 모듈은 GaAs(gallium arsenide) 기반의 소자를 많이 적용하였지 만, [4], [5] 최근에는 높은 전력 밀도(power density)를 가지고, 높은 열전도도(thermal conductivity)를 가져서 방열에 유리 한 GaN(gallium nitride) 소자가 많이 사용되고 있다 [6]～ [8] .…”

Section: ⅰ 서 론unclassified

Design and Implementation of High-Efficiency X-Band Transmit/Receive Block for Scalable Active Electronically Scanned Array Antenna

Hwang¹,

Yu-Ri²,

Jang³

2020

J. Korean Inst. Electromagn. Eng. Sci.

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This paper presents the fabrication results of a scalable X-band transmit/receive block used in an active electronically scanned array (AESA) antenna. Due to the disadvantages of the miniaturization of the existing brick-type planar structure and the complexity of the tile-type stacked structure, a quasi-tile structure-based transmit/receive block was developed. The developed antenna had a radio-frequency circuit that was easy to implement in a flat type, and the control part had the advantage of miniaturization in a stacked type. It is easy to develop an AESA antenna of a desirable size by connecting the transmit/receive blocks. An ethylene glycol water-cooling structure was not added inside the transmit/receive block, as it was designed to cool one side of the block. The temperature difference between the high power amplifier(HPA) and the contact surface of the cooling plate improved by approximately 15 %. Gallium nitride devices were used in the transmit/receive module and had a higher breakdown field than conventional gallium arsenide devices. Hence, the module exhibited high efficiency when used in power-switching circuits and showed good heat dissipation efficiency and thermal conductivity. The transmit power of each transmit/receive block channel was 10 W, the receive gain was 28.4 dB, and the noise figure value was 3.4 dB.

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