一种新型恒频比双频可调缝隙天线

Jie Yang, Wai‐Wa Choi, K. Tam
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引用次数: 1

摘要

本文提出了一种利用变容管的新型双频可调缝隙天线。通过改变变容管的偏置电压,等效调谐槽的长度,从而可以以恒定的频率f2/f1同时调谐低谐振频率和高谐振频率。测量结果表明,第一谐振频率可从1.36 GHz调谐到1.52 GHz,第二谐振频率可从2.12 GHz调谐到2.63 GHz。在整个可调范围内,可实现的频率比在1.56到1.73的范围内大致保持不变。与高频段调谐范围相比,在整个偏置调谐范围内,低频段频率可以认为是恒定的。在两个波段的整个电压调谐范围内,辐射方向图大致保持不变。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A novel dual-band frequency tunable slot antenna with constant frequency ratio
In this paper, a novel dual band frequency tunable slot antenna using varactors is presented. By varying the bias voltage of the varactors, the length of the slot is tuned equivalently, thus both the lower resonant frequency and the higher resonant frequency can be tuned simultaneously with a constant frequency of f2/f1. The first resonant frequency can be tuned from 1.36 GHz to 1.52 GHz while the second resonant frequency can be tuned from 2.12 GHz to 2.63 GHz, as shown by measured results. The achievable frequency ratio approximately remains unchanged within range of 1.56 to 1.73 over the whole tunable range. Compared with the higher band tuning range, the lower band frequency can be considered as constant over the whole bias tuning range. The radiation pattern directions approximately remain the same over the whole voltage tuning range for both band.
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