An X-Band Low Phase Noise Free-Running Oscillator Using Substrate Integrated Waveguide Dual-Mode Bandpass Filter With Circular Cavity

被引：46

作者：

Huang, Weichen ^{[1
]}

Zhou, Jianyi ^{[1
]}

Chen, Peng ^{[1
]}

机构：

[1] Southeast Univ, State Key Lab Millimeter Waves, Nanjing 210096, Jiangsu, Peoples R China

来源：

IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2015年 / 25卷 / 01期

关键词：

Bandpass filter (BPF); dual-mode circular cavity; group delay; oscillator; phase noise; substrate integrated waveguide (SIW); MICROWAVE-OSCILLATOR; DESIGN; RESONATOR; VCO;

D O I：

10.1109/LMWC.2014.2363690

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 this letter, a low phase noise free-running oscillator employing a substrate integrated waveguide (SIW) dual-mode bandpass filter (BPF) is presented. As a frequency stabilization element in the feedback loop, the dual-mode SIW BPF is designed at the oscillation frequency. Due to the transmission zero near the upper passband of the filter, a large group delay peak at the upper passband edge can be achieved to improve the phase noise performance significantly. An X-band oscillator using a SiGe HBT has been designed and experimentally demonstrated at 11.571 GHz. Measured results show that, the phase noise of this proposed oscillator is -135.5 dbc/Hz at 1 MHz offset frequency with a figure of merit (FOM) of -206.2 dBc/Hz.

引用

页码：40 / 42

页数：3

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