应用于平板电脑的4G-LTE/WWAN天线设计

摘要

随着3G网络的广泛建设以及LTE和WiMAX标准的兴起，移动通信系统正向着4G时代稳步迈进。文中提出了一种应用在平板电脑上多频段平面单极LTE/WWAN天线的设计方法，该天线结构由一个变形的L贴片和两个寄生短截线构成。天线的频段可覆盖整个LTE (LTE700/2300/2500)及五个WWAN (GSM850/900/1800/1900/UMTS)频段。其频率带宽可分为低频部分：700～960 MHz和高频部分：1710～2700 MHz，可在整个带宽内做到无缝衔接的宽带通信。该天线不仅可以实现宽频化，而且结构简单、尺寸小、易于集成。%With the large-scale construction of 3G network and rising up of LTE (Long Term Evolution) and WiMAX (Worldwide Interoperability for Microwave Access), the mobile communication system is moving toward 4G era. A design method of planar multiband monopole LTE/WWAN antenna for tablet computer is proposed, which is composed of dual parasitic stub and a deformed L paster. The antenna covers the whole LTE (LTE700/2 300/2 500) and five WWAN bands (GSM850/900/1 800/1 900/UMTS). The frequency bandwidth is divided into two parts, one is low frequency part with the frequency range of 700~960 MHz, and the other one is high frequency part with the frequency range of 1 710~2 700 MHz. Thus achieve seamless broadband communication. The designed antenna not only shows a wide band, but also exhibits a simple structure, small size and ease of integration.