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A compact folded interdigital bandpass filter using LTCC technology

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3 Author(s)
Ye Tian ; Sch. of Electron. Eng., Univ. of Electron. Sci. & Technol. of China, Chengdu, China ; Bo Yan ; Shuiping Zhou

A compact folded interdigital bandpass filter using low temperature co-fired ceramic (LTCC) technology is proposed. Strong capacitive couplings between the double-layer coupled stripline resonator structure are introduced to realize miniature bandpass filters. A design of an eight-pole Chebyshev folded filter with such structure is performed in this paper. The simulation response exhibits an insertion loss of 0.6 dB, a return loss of 19 dB and relative band width of 34%. The compact size of this folded interdigital bandpass filter is 12*7*2.7 mm3, which is less than λ / 8 × λ / 12 × 2.7 mm3.

Published in:

Microwave and Millimeter Wave Technology (ICMMT), 2010 International Conference on

Date of Conference:

8-11 May 2010