In this paper, a printed monopole antenna for quad-band operation in the mobile phone is proposed and studied. The antenna occupies a volume of 40×20×4mm3 with a very low height as compared to others, yet it can cover two wide bands centred at about 925MHz and 1920MHz to realize GSM/DCS/PCS/UMTS operation. Monopole-like radiation characteristics of the proposed antenna can be observed by measurements over the operating bands, where peak gains are 0.1, 0.9, 0.8, 0.5 dBi, respectively, at each of the frequency band of interest.
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机译：在本文中，提出并研究了用于移动电话中的四边形操作的印刷单极天线。与其他人相比，天线占据40×20×4mm3的体积，高度非常低，但它可以覆盖以大约925MHz和1920MHz为中心的两个宽带，以实现GSM / DCS / PC / UMTS操作。通过在操作带上的测量可以观察到所提出的天线的单极状辐射特性，其中峰值增益分别为0.1,0.9,0.8,0.5dBI，在每个频带的每个频带处。
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