摘要LTCC（低温共烧陶瓷，Low-Temperature Co-fired Ceramic）技术以其高介电常数 和多层工艺而广泛应用于毫米波段天线。而在毫米波段，高的介电常数的 LTCC 天线易受 表面波的影响，致使其增益降低、方向图畸变等问题。为降低表面波的影响，本文采用 基片集成腔（SIC，Substrate integrated cavity）作为辐射单元，实现了高增益、高 效率的天线单元，并利用天线单元实现了 2 2 单元天线阵列。本文主要工作如下： 76102

1。高增益 LTCC 线极化天线单元的设计与研究：设计了一种基于 LTCC 技术的高增益 线极化天线单元。该天线单元由 SIC 腔和“L”型激励探针构成。“L”探针起到了引向器 的作用，通过调整“L”型探针的长度可以影响天线的增益。 

2．馈电网络的设计与研究：本文设计的天线系统采用 SIW 馈电方式。馈电网络采用 SIW 分层传输，其上层为 SIW 功分器结构，下层为 SIW 馈电结构，中间通过 SIW 过渡结构 相结合。

3．高增益 LTCC 线极化阵列天线的设计与研究：结合高增益线极化天线单元和馈电 网络，本文设计了 2 2 单元天线阵列。在充分考虑了天线单元尺寸及馈电损耗后，确定 了阵元间的距离。 

毕业论文关键词：毫米波，阵列天线，低温共烧陶瓷（LTCC），基片集成波导（SIW），基片集成腔 天线（SIC），功分器 

毕业设计 外 文 摘 要

Title Design of the millimeter wave band high-gain LTCC antenna and array                   

Abstract LTCC (Low Temperature Co-firing Ceramic) technology is widely used in millimeter-band antenna for its high relative permittivity and the multilayer technology。 However, the high permittivity of antenna based on LTCC will easily excite the surface wave , resulting the gain reduction, pattern distortion and other issues。 To reduce the influence of the surface wave, the SIC(Substrate Integrated Cavity) is used as the main radiator and the planar antenna and arrays of high-gain, high-efficiency are realized in this thesis。 The main contents of this thesis are summarized as follows: 

1。 Design of the high-gain LTCC antenna: A high-gain linear polarization antenna element with LTCC technology is presented。 In this antenna structure ,a director is designed in the substrate integrated cavity, which provides a high-gain performance for antenna。 The gain of antenna can be affect by adjusting the length of the director。 

2。 Design of the feeding network: The SIW (Substrate Integrated Waveguide) technology is used in the design of the feeding network。 The structure of the feeding network is hierarchical, the upper layer is the structure of power pider and the lower layer structure is the feeding substrate integrated waveguide, with the transition structure between them。 

3。 Design of high-gain LTCC linear polarization array: On the basis of above mentioned antenna and feeding network ,a 4-elements array is presented。 The distance between the array elements is determined after full consideration of the size of the antenna elements and the loss of feeding network。 

Key words: millimeter wave, antenna array , Low Temperature Co-firing Ceramic , Substrate Integrated Waveguide , Substrate Integrated Cavity ,power pider 

本科毕业设计论文 第 I 页

目 次

1 绪论 1

1。1 研究背景 1

1。2