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

Self Cite

The results of the fabrication of active electronically scanned array (AESA) antennas with low-profile, low-weight, wide-scan, and thermal stability characteristics for aircraft-mounted radar are described. To reduce the size and weight of the antenna, a transmitreceive block is constructed in a quasi-tile structure in which the radio-frequency circuit-related transmit-receive module is a brick type, which is a flat structure, and the control board is a tile type, which is a stacked structure, to reduce the depth of the front of the antenna. In addition, the depth of the rear part of the antenna was reduced by manufacturing power and plate-shaped control-related modules at the rear of the antenna. The reduced antenna depth maximizes the effective isotropic radiated power (EIRP) and gain to noise temperature (G/T) by enlarging the antenna aperture. The manufactured antenna can scan a wide angle of ±70°. The cooling efficiency is improved by using a dual cooling structure that allows the cooling water to pass through the front cooling plate and then through the rear cooling plate. The EIRP of the manufactured AESA antenna is 104.04 dBmi, and G/T is 7.46 dB/K in Taylor weighting.

Section: ⅰ 서 론unclassified

Section: -2 Low-profile을 위한 송수신 블록 설계unclassified

Design and Implementation of an X-Band Low-Profile Active Electronically Scanned Array for Airborne Radar

Hwang¹,

Lee²,

Kim³

et al. 2021

Self Cite

“…본 논문에서는 경공격기 및 고등훈련기와 같은 항공기 노즈 레이돔의 협소한 장착 공간 및 제한적인 냉각용량 에 적용할 수 있는 국내 최초 같이 능동위상배열안테나장치의 두께가 작을수록 개구 면이 넓어지게 되고 복사소자와 송수신 채널수를 많이 적용할 수 있어 안테나의 이득과 전체 송신 출력이 증가 하여 EIRP(effective isotropic radiated power)와 G/T(gain to noise temperature ratio) 성능이 향상되게 된다 [7] . tile구조의 크기, 무게, 구조 설계 등 단점을 보완하였다 [8] . 안정적인 냉각공기의 분기, 압력과 유속을 고려하여 구조 안정성을 위한 설계를 진행하였다 [9] (그림 11).…”

unclassified

Design and Fabrication of X-Band Air-Cooled, Compact, and Lightweight Active Electronically Scanned Array Antenna Unit for Aircraft Installation

Jung,

Han,

Kang

et al. 2023

To apply active electronically scanned array (AESA) radars to aircraft, such as light attack aircraft, unmanned aerial vehicles, and drones, a radar system designed with a compact and lightweight AESA antenna device and an air-cooled heat dissipation structure is required. This paper presents the design and fabrication results of the first domestic X-band air-cooled, compact, and lightweight active phased array antenna device for aircraft. To dissipate heat from the AESA antenna unit by air cooling, a heat dissipation fin was applied to the transmit-receive module, the main heat source, and the thermal stability was confirmed through thermal analysis and testing. The effective isotropic radiated power of the AESA antenna unit was over OO.OO dBmi, its gain-to-noise temperature ratio was over O.OO dB/k, and wide-angle scanning was possible up to ±70°.

“…송수신모듈 조립체의 전원과 제어 구성을 간략하게 그 림 3에 나타내었다. 표 1에서 설명한 각 구성품의 기능이 그림 3과 같이 capbank와 gating 회로를 지나 펄스 형태로 8조의 각 송수신모듈의 HPA, DRA, LNA 드레인(drain)으 로 전원이 인가된다 [4] . 외에…”

unclassified

Design and Implementation of X-Band Transmit/Receive Module Assembly Engineering Model for Satellite SAR Applications

Park,

Yang,

Kim

et al. 2023

Self Cite

This paper presents the design and implementation of a unit transmit/receive module assembly engineering model for satellite synthetic aperture radar (SAR) applications. To manage hundreds or thousands of transmit/receive modules for active electronically scanned array (AESA) applied SAR antenna efficiently, with expandability and standardization, a unit assembly is required. Before applying requirements for satellite SAR payload applications such as EEE component selection, user LAT, and derating, an engineering model was designed to evaluate the RF performance as a unit assembly. The transmit/receive module unit assembly includes eight transmit/receive modules with additional functions for operating the assembly. Measurement results for the transmit/receive module assembly included an RF output power of OO.O dBm, 5.625°-step phase shifts, 0.5-dB step attenuations, and maximum power consumption of 68.05 W.