Dual-band filter

Details Dual-band filter Dual-band filter

2006-09-01

2009-02-24

Tan, Vibol (Department: 2819)

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

C333S203000, C333S202000

Reexamination Certificate

active

07495530

ABSTRACT:
A dual-band filter (10) is provided. The dual-band filter includes an input line (100), a first transmission line (140), a second transmission line (160), a third transmission line (180), and an output line (120). The input line is used for inputting electromagnetic signals. The first transmission line is electronically connected to the input line. The second transmission line is arranged parallel to the first transmission line. The third transmission line is arranged between, and parallel to, the first transmission line and the second transmission line. The output line for outputting electromagnetic signals, is arranged parallel to the input line, and is electronically connected to the second transmission line.

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Jen-Tsai Kuo, Tsung-Hsun Yeh, and Chun-Cheng Yeh, “Design of Microstrip Bandpass Filters With A Dual-Passband Response”, IEEE Transactions on Microwave Theory and Techniques, Apr. 2005, pp. 1331-1337, vol. 53, Issue 4, IEEE.
Qiang Sui, Melzhen Jin, Yidong Wang, Yanjun Ma, Qingxin Guo, Li Zhang and Jilong Ju, “Dual-Mode L-Band Bandpass Filter With Cross Couplings And Absorbing Resonators”, Microwave Conference Proceedings, APMC 2005, Asia-Pacific Conference Proceedings, Dec. 2005, 3 Pages, vol. 5, IEEE.

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