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Extended stop-band band pass filter using new spurious suppression technique

✍ Scribed by Kaixue Ma; Kiat Seng Yeo

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
266 KB
Volume
51
Category
Article
ISSN
0895-2477

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✦ Synopsis

Abstract

A spurious suppression method by using the “T” feeders is proposed and investigated. A novel band pass filter using “T” feeders is implemented. The measured results of the filter demonstrate good spurious suppression. The experimental results of the filter operating at the center frequency f~0~ = 1.87 GHz are the fractional bandwidth of 9%, the insertion loss of 1.7 dB, the return loss better than 25 dB. The spurious frequency with rejection larger than 25 dB is up to 5f~0~. Below 1 GHz, the stop‐band rejection is larger than 51.5 dB, and the largest stop‐band rejection is 54 dB in the upper stop‐band. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 706–709, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24179

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