本論文係研製應用於海事雷達天線之9.4 GHz巴特勒矩陣，由其子電路─3 dB 耦合器、交叉跨線結構與固定式相移器所組成。論文中以懸掛帶線與微帶線2種導波結構設計8×8與8×16巴特勒矩陣，並整合曾俊豪同學研製之1×8槽孔天線與1×16微帶天線為8單元與16單元波束切換陣列天線。本論文使用懸掛帶線設計之8×8巴特勒矩陣可使1×8槽孔天線在空間中產生-25˚(4L)、-18˚(3L)、-11˚(2L)、-4˚(1L)、4˚(1R)、11˚(2R)、18˚(3R)、26˚(4R)的主波束，相較於理論切換角度，平均角度誤差為0.3˚。使用微帶線設計之8×16巴特勒矩陣可使1×16微帶天線產生-47˚(4L)、-33˚(3L)、-19˚(2L)、-4˚(1L)、5˚(1R)、17˚(2R)、30˚(3R)、46˚(4R)的主波束，相較於理論切換角度，平均角度誤差為1.1˚。

This thesis presents a 9.4-GHz Butler matrix for the marine radar application. The matrix consists of 3 dB couplers, crossovers and fixed phase shifters. The 8×8 and 8×16 Butler matrices are realized by suspended striplines and microstrip lines, respectively. Two matrices integrated with 1×8 slot antennas and 1×16 patch antennas, which are designed by Mr. Chun-Hao Tseng, to form the 8-element and 16-element beam-switching phased-array antennas. The 8×8 Butler matrix realized by the suspended striplines with 1×8 slot antennas has successfully yielded 8 main beams pointing to -25˚(4L)、-18˚(3L)、-11˚(2L)、-4˚(1L)、4˚(1R)、11˚(2R)、18˚(3R)、26˚(4R), respectively. As compared to the theoretical switched angles, the average angle error is 0.3˚. On the other hand, the 8×16 Butler matrix realized by microstrip lines with 1×16 patch antennas produces 8 main beams pointing to -47˚(4L)、-33˚(3L)、-19˚(2L)、-4˚(1L)、5˚(1R)、17˚(2R)、30˚(3R)、46˚(4R), respectively. As compared to the theoretical switched angles, the average angle error is 1.1˚.

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