Abstract
A compact microstrip dual-band bandpass filter (BPF) using the embedded open-loop ring resonator is proposed. The filter can achieve two passbands without using the external dual-band impedance transformer in the input/output feeding line. Furthermore, by using the developed design method, the ratio of the first passband to the second passband can be controlled. A compact microstrip dual-band BPF operated at 2.45/5.7 GHz is demonstrated. The designed filter has low insertion loss, high rejection between the two passbands, and a very small size of 11.5 × 4.65 $ mm 2 (0.094λ 0 × 0.039 λ 0), λ 0 being the free-space wavelength of the center operating frequency of the 2.45 GHz. The good agreement between simulation and measurement is obtained.
| Original language | English |
|---|---|
| Article number | 6074966 |
| Pages (from-to) | 658-660 |
| Number of pages | 3 |
| Journal | IEEE Microwave and Wireless Components Letters |
| Volume | 21 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - 2011 Dec 1 |
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Electrical and Electronic Engineering
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Hsu, C. Y., Chen, C. Y., & Chuang, H. R. (2011). A miniaturized dual-band bandpass filter using embedded resonators. IEEE Microwave and Wireless Components Letters, 21(12), 658-660. [6074966]. https://doi.org/10.1109/LMWC.2011.2172592