Wideband Microstrip Band-pass Filter For L-band Low-noise Receiver

被引：0
|
作者：
Fan, Jin [1 ,2 ]
Jin, Chengjin [1 ,2 ]
Nan, Rendong [1 ,2 ]
Luo, Jirun [3 ]
机构：
[1] Natl Astron Observ China, Dept FAST, Beijing 100012, Peoples R China
[2] Chinese Acad Sci, Key Lab Radio Astron, Beijing 100012, Peoples R China
[3] Chinese Acad Sci, Inst Elect, Dept Microwave Device, Beijing 100190, Peoples R China
来源：
2014 XXXITH URSI GENERAL ASSEMBLY AND SCIENTIFIC SYMPOSIUM (URSI GASS) | 2014年
关键词：
D O I：
暂无
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：
This paper presents a novel wideband microstrip band-pass filter for L-band low noise receiver of radio telescope. By introducing a stepped-impedance one-wavelength ring resonator (SORR) into a stepped-impedance half-wavelength resonator (SHR), excellent in-band performance is realized. In order to suppress the harmonic responses of the filter for a wide stop-band, two band-stop sections with asymmetrical pi-type structure are designed. A prototype filter having 49.3% of 1-dB and 57.9% of 3-dB fractional bandwidth is fabricated with advantages of compact size, high selectivity and high out-of-band rejection. In the pass-band, return loss is less than -18.8dB and the minimal insertion loss is 0.6 dB.
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页数：4
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