论文信息 - Dual-band bandpass filter using coupled resonator pairs

Dual-band bandpass filter using coupled resonator pairs

This letter proposes and fabricates a novel dual-band bandpass filter topology. The proposed topology facilitates the split resonating frequencies of coupled resonator pairs in realizing the dual-band response and introduces transmission zeros for improving the stopband attenuation. The semi-lumped prototype enables the integration of the filter in a multilayer circuit for miniaturized implementation. Finally, a design example fabricated with low temperature co-fired ceramic (LTCC) technology is presented for validating the filter configuration.

Cheng-Chung Chen

[1] Chi-Yang Chang,et al. A novel coupling structure suitable for cross-coupled filters with folded quarter-wave resonators , 2003, IEEE Microwave and Wireless Components Letters.

[2] Sheng-Fuh Chang,et al. Dual-band step-impedance bandpass filter for multimode wireless LANs , 2004 .

[3] Hossein Hashemi,et al. Concurrent multiband low-noise amplifiers-theory, design, and applications , 2002 .

[4] C. Quendo,et al. An original topology of dual-band filter with transmission zeros , 2003, IEEE MTT-S International Microwave Symposium Digest, 2003.

[5] Hsien-Shun Wu,et al. Coalesced single-input single-output dual-band filter , 2003, IEEE MTT-S International Microwave Symposium Digest, 2003.

[6] C. Hsue,et al. Dual-band bandpass filters using equal-length coupled-serial-shunted lines and Z-transform technique , 2004 .

[7] T. Ishizaki,et al. A miniaturized monolithic dual band filter using ceramic lamination technique for dual mode portable telephones , 1997, 1997 IEEE MTT-S International Microwave Symposium Digest.