Abstract
This letter presents a novel approach to design dual-band bandpass filter by using defected stepped impedance resonator (DSIR) and microstrip stepped impedance resonator (MSIR). A pair of MSIRs on the upper plane forms a cross coupled filtering passage, and a pair of DSIRs at the lower plane constructs a linear phase filtering passage. Both of them are fed by a common T-shaped microstrip feed line with source-load coupling. Then they are directly combined to construct a compact dual-band filter with two passbands centering at 2.35 GHz and 3.15 GHz, respectively. The measurement results agree well with the full-wave electromagnetic designed responses.
Original language | English |
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Article number | 4530749 |
Pages (from-to) | 392-394 |
Number of pages | 3 |
Journal | IEEE Microwave and Wireless Components Letters |
Volume | 18 |
Issue number | 6 |
DOIs | |
Publication status | Published - Jun 2008 |
Keywords
- Bandpass filter (BPF)
- Defected stepped impedance resonator (DSIR)
- Dual-band
- Microstrip stepped impedance resonator (MSIR)