Abstract
Two dual-band bandpass niters (BPFs) based on the dou bly parallel-coupled stepped impedance resonators (SIRs) structures have been proposed in this paper. The coupled-SIRs with/without open-stub-loads are introduced in the filter design. The dual-band filters exhibit ing multiple zeros design operate at 2.45/5.2-GHz for the WLAN appli cations. Two three-staged filters composed of four SIRs have been pro posed with the tapped-line adapted in the I/O sections. A five-staged fil ter is constructed based on the same design principle to achieve a better band-rejection. The proposed filters have the advantages of a much wider bandwidth in both the passbands without sacrificing the passband's inser tion loss and passband flatness. The design procedure for a conventional parallel-coupled microstrip lines model is still suitable to design the pro posed filters. The proposed filters have achieved almost twice the band width of a conventional parallel-coupled lines configuration under the same design parameters. The experiments have been conducted to verify filter performance. Measured results are in good agreement with the full-wave simulation results.
| Original language | English |
|---|---|
| Pages (from-to) | 949-955 |
| Number of pages | 7 |
| Journal | IEICE Transactions on Electronics |
| Volume | E91-C |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 2008 Jun |
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All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering
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The dual-band bandpass filters using doubly parallel-coupled sirs with multiple zeros for WLAN applications. / Ho, Min Hua; Ho, Hao Hung; Rao, Chen Mao.
In: IEICE Transactions on Electronics, Vol. E91-C, No. 6, 06.2008, p. 949-955.Research output: Contribution to journal › Article
TY - JOUR
T1 - The dual-band bandpass filters using doubly parallel-coupled sirs with multiple zeros for WLAN applications
AU - Ho, Min Hua
AU - Ho, Hao Hung
AU - Rao, Chen Mao
PY - 2008/6
Y1 - 2008/6
N2 - Two dual-band bandpass niters (BPFs) based on the dou bly parallel-coupled stepped impedance resonators (SIRs) structures have been proposed in this paper. The coupled-SIRs with/without open-stub-loads are introduced in the filter design. The dual-band filters exhibit ing multiple zeros design operate at 2.45/5.2-GHz for the WLAN appli cations. Two three-staged filters composed of four SIRs have been pro posed with the tapped-line adapted in the I/O sections. A five-staged fil ter is constructed based on the same design principle to achieve a better band-rejection. The proposed filters have the advantages of a much wider bandwidth in both the passbands without sacrificing the passband's inser tion loss and passband flatness. The design procedure for a conventional parallel-coupled microstrip lines model is still suitable to design the pro posed filters. The proposed filters have achieved almost twice the band width of a conventional parallel-coupled lines configuration under the same design parameters. The experiments have been conducted to verify filter performance. Measured results are in good agreement with the full-wave simulation results.
AB - Two dual-band bandpass niters (BPFs) based on the dou bly parallel-coupled stepped impedance resonators (SIRs) structures have been proposed in this paper. The coupled-SIRs with/without open-stub-loads are introduced in the filter design. The dual-band filters exhibit ing multiple zeros design operate at 2.45/5.2-GHz for the WLAN appli cations. Two three-staged filters composed of four SIRs have been pro posed with the tapped-line adapted in the I/O sections. A five-staged fil ter is constructed based on the same design principle to achieve a better band-rejection. The proposed filters have the advantages of a much wider bandwidth in both the passbands without sacrificing the passband's inser tion loss and passband flatness. The design procedure for a conventional parallel-coupled microstrip lines model is still suitable to design the pro posed filters. The proposed filters have achieved almost twice the band width of a conventional parallel-coupled lines configuration under the same design parameters. The experiments have been conducted to verify filter performance. Measured results are in good agreement with the full-wave simulation results.
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U2 - 10.1093/ietele/e91-c.6.949
DO - 10.1093/ietele/e91-c.6.949
M3 - Article
AN - SCOPUS:69249099962
VL - E91-C
SP - 949
EP - 955
JO - IEICE Transactions on Electronics
JF - IEICE Transactions on Electronics
SN - 0916-8524
IS - 6
ER -