Q波段终端天线设计

论文总字数：34943字

摘 要

现今，无线移动通信技术发展迅猛，虽然经历了由GSM到3G、4G移动通信的发展过程，但是目前移动通信系统所占用的频谱资源仍以5GHz以下频段为主。而微波高频段、毫米波频段的频谱资源是十分丰富的，非常适于实现宽带、超高吞吐量移动通信，因此有效利用这些频谱资源将是5G移动通信发展的主要方向。

由于天线的物理尺寸与电磁波的频率成反比，在毫米波频段相应的天线所对应的物理尺寸更小，优点与挑战并存。一方面，更小的天线尺寸意味着更高的集成性，同时可以减小无线通信设备的体积；另一方面，过小的天线尺寸也会带来相应的设计挑战，诸如全向辐射、临近电路干扰等。

本文的主要工作是针对Q波段毫米波无线通信发展需求，研究相应的移动终端天线的设计方法和特性。所设计的终端天线需要满足相应的工作频带要求，全向性辐射要求，以及增益要求等。本文基于对传统的平面倒F天线深入理解和分析，在Q波段上尝试设计了不同形式的平面倒F天线结构，通过多种设计结构相结合，从而达到所要求的技术指标，并通过全波仿真进行了设计验证。本文还进一步探索了一个终端内两天线联合应用的可能性。

本文的主要研究内容包括：

1、掌握不同终端天线的原理和优缺点，选择最适合自己性能要求的一种，进行深入学习。

2、对选择的天线进行结构创新和改进和仿真，基本达到所提出的毫米波通信终端天线设计指标：

频带：42.3-48.4GHz ；驻波比lt;2 (|S11|lt;-9.5dB) ；天线增益：1-2dBi ；辐射方向图：全向或近似全向

关键词：毫米波无线通信、Q波段、终端天线、平面倒F天线

DESIGN ON Q-BAND WIRELESS COMMUNICATION TERMINAL ANTENNA

BS Candidate: Yijie Wang

student number：04012618

Supervisor: Dr. Yan Zhang

Abstract

Wireless communication technology is developing every day , although we have experienced mobile communication development process from GSM to 3 g, 4 g ，the frequency band they used are almost below 5GHz. So it is very rich for the band resource on high frequency of microwave and millimeter wave, it is good for broadband, high throughput of mobile communication. So effective utilization of the spectrum is the main development direction of 5 g mobile communications. The size of antenna is inversely proportional to the frequency of electromagnetic waves, the higher the frequency means the smaller antenna .On the one hand , Smaller antenna size means higher integration , at the same time we can reduce the volume of the equipment. by this way can we reduce the volume of the equipments. In addition to higher frequency means a wide signal bandwidth, represents a faster transmission speed. on the other hand , if the antenna size is too small , it can bring the corresponding design challenges, such as the unidirectional radiation, adjacent circuit interference, etc.

The main work in this article is to create a kind of terminal antenna which

use Q-band. The terminal antenna designed will mainly meet the band requirements, unidirectional radiation requirements, as well as gain requirements, etc. This article is based on the in-depth understanding and analysis traditional planar inverted F antenna , and trying to design different forms of planar inverted F antenna structure on the Q band. Through a variety of designs, we achieve the required technical indicators, and is verified by full wave simulation. This paper further explores the possibility of a joint application of a terminal with two antennas.

In this paper, the main research contents include:

1. Master the principle and the advantages and disadvantages of different kinds of terminal antenna, choose the most suitable terminal antenna whose performance meet the requirements, and go on in-depth study.

2.Make some innovations and improvements to the selected kind to meet criteria below;

Band: 42.3-48.4GHz ; VSWRlt;2(|S11|lt;-9.5dB) ; Gain:1-2dBi ; Radiation Pattern: Unidirectional or approximate unidirectional

Key Words: Millimeter-wave wireless communication; terminal antenna; planar inverted F antenna

目录

第一章 绪论·································································· 1

1.1研究的背景和意义····················································· 1

1.1.1进行高频技术研究的意义··········································· 1

1.1.2终端天线的特点和应用············································· 1

1.2国内外研究和应用现状················································· 2

1.3本文的主要工作和内容架构············································· 2

1.3.1论文需要完成的工作················································ 2

1.3.2论文内容架构······················································ 2

第二章 相关天线原理与技术介绍················································ 4

2.1 天线的介绍·························································· 4

2.2 手机天线讨论························································ 7

第三章 PIFA天线的设计过程·················································· 10

3.1 平面倒F天线的介绍·················································· 10

3.2 PIFA天线的设计仿真················································ 17

第四章 总结及展望··························································· 63

致谢········································································ 64

参考文献···································································· 65

第一章 绪论

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