Low Phase-Noise Self-Oscillating Cross-Coupled Active Antenna

被引：15

作者：

Amiri, Mina ^{[1
]}

Masoumi, Nasser ^{[1
]}

Shahabadi, Mahmoud ^{[2
]}

机构：

[1] Univ Tehran, Coll Engn, Sch Elect & Comp Engn, CST LAB, Tehran, Iran

[2] Univ Tehran, Coll Engn, Sch Elect & Comp Engn, Photon Res Lab, Tehran, Iran

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2018年 / 66卷 / 09期

关键词：

Active antennas; cross-coupled oscillator; microstrip antennas; phase noise; resonators; INTEGRATED ANTENNA; DESIGN; ARRAY;

D O I：

10.1109/TAP.2018.2851369

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 low phase-noise 7.1 GHz active oscillating antenna fabricated on a 10 mil Rogers 5880 is reported. Two low-cost bipolar transistors are employed to implement a cross-coupled oscillator. The proposed configuration consists of two planar antennas driven by the cross-coupled two-transistor oscillator. The differential symmetry of the proposed active antenna maximizes the radiated power along the antenna boresight at the fundamental oscillation frequency with reduced radiated power at the second harmonic. Due to the crass-coupled configuration, the radiated signal shows low phase-noise characteristic. Measurements on the fabricated active antenna indicate that it consumes 42 mW dc power and has a phase noise of -101.7 dBc/Hz at 100 kHz frequency offset. The proposed cross-coupled active antenna exhibits an estimated effective isotropic radiated power of 12.5 dBm.

引用

页码：4516 / 4523

页数：8