摘要：最近几年来，随着消费类电子产品需求的激增，移动通信的迅猛发展，无线通信产品的制作技术与消费市场上得到了进一步的提升。天线的性能对整个无线通信的质量至关重要，尤其是手机、蓝牙等前端器件方面，它主要进行对无线通信系统信号的发射和电磁波的接收。倒F型蓝牙天线在设计上是以一个矩形金属贴片作为辐射体，以一个相对较大的接地面作为反射面，而在辐射体和接地面之间有一个连接两者的短路金属片，以及一个金属馈电，其馈电方式为同轴线馈电。倒F型蓝牙天线在结构上贴片尺寸较小，整体结构紧凑；在实际制作过程中有天线整体重量比较轻、剖面相对较低，而且造价便宜、机械强度好等优点，在天线性能方面，具有频带较宽、工作效率高、实际增益高、不受工作环境的影响、对人体辐射产生的伤害小、容易与微波电路集成等一系列优点。本文在现有研究平面倒F型天线的基础上，借助HFSS这个天线设计仿真软件进行了对倒F型蓝牙天线的研究，并仿真了这类天线，我们从仿真的结果上来验证该天线的性能，证实了这个课题研究的有效性[1]。

本文论述的是2.45GHz的倒F型蓝牙天线，其理论基础是微带天线理论基础，本论文的主要工作分为以下几点:

1.研究了倒F型蓝牙天线的基本结构和设计原理，论述了倒F型蓝牙天线的国内外研究背景和现状，介绍了微带天线小型化和宽频带技术。

2.介绍了倒F型蓝牙天线的设计与应用，研究了小天线的设计与测试方法。

3.研究了倒F型蓝牙天线的结果参数选取，分析了倒F型蓝牙天线的因结构参数的改变和馈电点位置对天线工作性能的影响。

4.倒F型蓝牙天线模型采用天线仿真软件建立，分析了天线的S11参数（回波损耗）、天线实际增益、阻抗匹配以及辐射方向图随频率的变化关系，并进行了天线模型的性能仿真测试。

关键词：倒F型；微带天线；小型化；PIFA

Abstract：In recent years, with the proliferation of consumer electronics demand, the rapid development of mobile communications, wireless communications products, production technology and consumer market has been further improved. Antenna performance is critical to the quality of the entire wireless communication, especially mobile phones, Bluetooth and other front-end devices, it is mainly on the wireless communication system signal transmission and electromagnetic wave reception. The inverted-F-type Bluetooth antenna is designed with a rectangular metal patch as a radiator with a relatively large ground plane as a reflective surface, and between the radiator and the ground plane there is a short- And a metal feed, the feed mode for the coaxial feed.In the actual production process, the overall weight of the antenna is relatively light, the profile is relatively low, and the cost is cheap, the mechanical strength is good and so on. In the aspect of the antenna performance, the antenna type is small in the structure, With a wide band, high efficiency, the actual gain is high, not affected by the working environment, the human body radiation damage, easy integration with the microwave circuit and a series of advantages. Based on the existing research on the inverted F-type antenna, this paper studies the inverted-F-type Bluetooth antenna by means of HFSS antenna design simulation software, and simulates the antenna. We can verify the performance of the antenna from the simulation results , Confirms the validity of this research [1].

This paper discusses the 2.45GHz inverted F-type Bluetooth antenna, the theoretical basis is the theoretical basis of microstrip antenna, the main work of this paper is pided into the following points:

1. The basic structure and design principle of inverted-F-type Bluetooth antenna are studied. The research background and current situation of inverted-type Bluetooth antenna are discussed. The miniaturization and broadband technology of microstrip antenna are introduced.