毫米波LTCC平面傳輸線轉接器與巴特勒矩陣波束形成器之設計

本論文以LTCC製程實現60 GHz之4×4巴特勒矩陣與陣列天線之整合。第二章提出LTCC內部層與層間訊號連接之結構設計。將層與層間的連接依傳輸線類別拆解成幾個部分，逐一模擬分析找出其最佳特性之規格，最後再運用其結構組合而成應用於LTCC中之換層訊號連接。第三章提出LTCC 4×4巴特勒矩陣波束形成器之設計，由四個正交耦合器與兩組相移器所組成。3-dB正交耦合器使用寬邊耦合帶線的架構。相移器由一條換層的走線加上一條在同一層上的走線構成，由於換層所產生的高頻寄生效應，使得其相位差具有寬頻的響應。以此巴特勒矩陣加上由LTCC最上層輸入之走線與連接至天線的走線，結合LTCC陣列天線，完成LTCC波束形成器與陣列天線之整合，由四個不同的輸入埠在空間中產生四個方向之波束，其量測結果，在55-63 GHz之頻率範圍內，天線之場型可以分辨四個輸入埠所產生之波束。

關鍵字

毫米波；巴特勒矩陣；低溫共燒陶瓷基板；相位陣列天線；波束形成器

並列摘要

A 60 GHz 4×4 Butler Matrix integrated with 1×4 antenna array using LTCC process was developed in this thesis. In chapter 2, the structure for signal transition from layer to layer in the inner of LTCC substrate has been proposed. The transition structure has split into several parts, simulate one by one and find the best result, and combine these structures to realize the signal transition from layer to layer in LTCC substrate. In chapter 3, the LTCC 4×4 Butler Matrix beamformer design has been proposed. The Butler Matrix combined with four 3-dB quadrature couplers and two phase shifters. The 3-dB quadrature coupler was realized by broadside couple stripline structure. The phase shifter was realized by a stripline which change layer and a stripline which in the same layer, because of the high frequency parasitic effect, the phase difference has wideband response. Using this Butler Matrix combine with the line from top layer input and the line connect to antenna, the integration of LTCC antenna array and LTCC beamformer has completed. In the measurement result of 55-63 GHz, it can distinguish four radiation beams which generated from four different input ports.

並列關鍵字

Phased Array Antenna ； Millimeter Wave ； Butler Matrix ； LTCC ； Beamformer

參考文獻

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毫米波LTCC平面傳輸線轉接器與巴特勒矩陣波束形成器之設計

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