On the efficiency of frequency reconfigurable high-Q antennas for 4G standards

被引：14

作者：

Del Barrio, S. Caporal ^{[1
]}

Pelosi, M. ^{[1
]}

Pedersen, G. F. ^{[1
]}

机构：

[1] Aalborg Univ, Fac Sci & Engn, Dept Elect Syst, Sect Antennas Propagat & Radio Networking APNet, DK-9220 Aalborg, Denmark

来源：

ELECTRONICS LETTERS | 2012年 / 48卷 / 16期

关键词：

Tuning - Radiation efficiency;

D O I：

10.1049/el.2012.1315

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In the actual context of reducing antenna size and operating in multiple bands tunable antennas are investigated. Moreover, high-Q and low-Q tunable antennas are compared with respect to their efficiency. The loss issue that tunable high-Q antennas present is addressed. Using a variable capacitor as a tuning mechanism, simulations and measurements of a self-resonating antenna show the mismatch and the radiation efficiencies of the high-Q and the low-Q antennas. The investigated frequencies are in the low band of the 4G standard. Measurements are conducted for different tuning stages and the study shows that the high-Q design performs worse than the low-Q one. A 1.4 dB degradation in total efficiency is observed for a high-Q antenna in a tunable system.

引用

页码：982 / 983

页数：2

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