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http://ir.ncue.edu.tw/ir/handle/987654321/10691
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| Title: | Design of a new tri-band microstrip BPF using combined quarter-wavelength SIRs |
| Authors: | Lee, Ching-Her;Hsu, Chung-I G.;Jhuang, He-Kai |
| Contributors: | 電子工程學系 |
| Keywords: | Anti-parallel coupled line;Stepped-impedance resonator (SIR);Tri-band microstrip bandpass filter (BPF) |
| Date: | 2006-11
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| Issue Date: | 2012-05-29T01:21:41Z
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| Publisher: | Institute of Electrical and Electronics Engineers Inc. |
| Abstract: | A new tri-band microstrip bandpass filter (BPF) is designed to produce three passbands at the commercially practical frequencies through a single piece of filter circuitry. The basic component used to build the proposed filter consists of two quarter-wavelength (lambda/4) stepped-impedance resonators (SIRs). One of the lambda/4 SIRs is designed to operate at 1.57 GHz and 5.25 GHz, and the other at 2.45 GHz. The feed positions for the two lambda/4 SIRs are carefully located to have the same distance from the via-hole ground and meanwhile to give the required external quality factors (Qe's). In such a way, the microstripline sections between the via-hole and each of the feed positions can be combined into one to simplify the filter structure, and to reduce the BPF circuit size. Performance of the newly designed tri-band BPF is verified by measured results |
| Relation: | IEEE Microwave and Wireless Components Lett., 16(11): 594-596 |
| Appears in Collections: | [電子工程學系] 期刊論文
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