主要介绍4种蓝牙天线的设计方法。 目前最常见的蓝牙天线有偶极天线（dipole antenna）,倒F型天线（planar inverted F anternna）、曲流线型天线（meander line antenna）、微小型陶瓷天线（ceramic antenna）、液晶聚合体天线（lcp）和棒状天线（2.4G频率专用）等。由于这些具有近似全向性的辐射场型以及结构简单、制作成本低的优点，所以非常适合嵌入蓝牙技术装置使用。
A combines multiple antenna elements with a signalprocessing capability to optimize its radiation and/or reception pattern automatically in response to the signal environment.
The antenna is a key component in an RF system and can have a major impact on performance. High performance, small size, and low cost are common requirements for many RF applications. To meet these requirements, it is important to implement a proper
用铜线、塑料杯等简单的材料制作gps天线，英文版原版配图，内容步骤详细，光看图就可以懂。对有兴趣自制GPS的同志很实用。 If you operate APRS or just need an external antenna for your GPS receiver, here’s one that is easy to build yet offers surprisingly good performance in a compact size. Best of all, it use
Principles of Planar Near-Field Antenna Measurements 介绍天线近场测量的基础知识 Contents Preface xi 1 Introduction 1 1.1 The phenomena of antenna coupling 1 1.2 Characterisation via the measurement process 4 1.2.1 Free space radiation pattern 6 1.2.2 Polarisatio
