Abstract
A cross-coupled bandpass filter is designed with quarter-wave stepped-impedance resonators (SIRs) on a single circuit plane. The entire circuit has not only a compact area since half-sized SIRs are used, but also a wide upper stopband because the first spurious peak occurs at a frequency much higher than the passband. Plural transmission zeros on both sides of the passband can be realized by non-adjacent couplings and tapped input/output. Two-port Z-parameters are employed to formulate the analysis of the transmission zeros. An experimental filter is fabricated and measured to validate the design.
Original language | English |
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Article number | 4015138 |
Pages (from-to) | 1205-1208 |
Number of pages | 4 |
Journal | IEEE MTT-S International Microwave Symposium Digest |
DOIs | |
State | Published - 2006 |
Externally published | Yes |
Event | 2006 IEEE MTT-S International Microwave Symposium Digest - San Francisco, CA, United States Duration: 11 06 2006 → 16 06 2006 |
Keywords
- Bandpass filter
- Combline filter
- Cross-coupled stepped-impedance resonator (SIR)
- Transmission zero