Pattern-Reconfigurable Self-Oscillating Active Integrated Antenna With Frequency Agility

被引：27
|
作者：
Wu, Cheng-Hsun [1 ]
Ma, Tzyh-Ghuang [1 ]
机构：
[1] Natl Taiwan Univ Sci & Technol, Dept Elect Engn, Taipei 10607, Taiwan
来源：
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2014年 / 62卷 / 12期
关键词：
Active antennas; microstrip antennas; microwave FET oscillators; monopole radiators; reconfigurable antennas; COMPACT;
D O I：
10.1109/TAP.2014.2361897
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：
A frequency-agile pattern-reconfigurable self-oscillating active integrated antenna (AIA) is investigated in this paper. With the aid of two PIN diodes and a varactor, the proposed active antenna shows pattern reconfigurability and frequency tunability at the same time. The antenna, composed of two monopoles and a semi-ring radiator, can be switched between four states, with two featuring omnidirectional patterns and the other two having end-fire radiation. The polarizations of the two omnidirectional states are spatially orthogonal to each other. By embedding a varactor diode, the voltage-controlled tuning range is from 4.27 to 4.94 GHz, while the effective isotropic radiated power (EIRP) varies from 5.4 to 9.3 dBm. The phase noise is better than -102.7 dBc/Hz at a 1-MHz offset from the carrier frequency.
引用
收藏
页码：5992 / 5999
页数：8
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