A Modified .LAMBDA.0/4 Short-Circuited Stub Bandpass Filter for UWB Applications Utilizing LTCC Technology
| Autor: | Thai Hoa Duong, Kye San Lee, Ihn Seok Kim |
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| Rok vydání: | 2010 |
| Předmět: |
Computer Networks and Communications
Computer science business.industry Electronic filter topology Bandwidth (signal processing) Dielectric Stopband Stub (electronics) Band-pass filter Return loss Optoelectronics Insertion loss Electrical and Electronic Engineering business Telecommunications Electrical impedance Software |
| Zdroj: | IEICE Transactions on Communications. :1163-1171 |
| ISSN: | 1745-1345 0916-8516 |
| DOI: | 10.1587/transcom.e93.b.1163 |
| Popis: | In this paper, we utilize low temperature co-fired ceramic technology (LTCC) to realize a modified short-circuited stub bandpass filter suitable for ultra-wideband (UWB) applications. By modifying the conventional short-circuited stub bandpass filter structure with stubs and connecting lines of lower characteristic impedances, the number of stubs has been reduced from 5 to 2 on a high dielectric constant substrate (er=40). A wireless local area network (WLAN) stopband in the frequency range of 5.15 to 5.825GHz has been inserted into the filter characteristic using three short-circuited coupled lines. The filter is fabricated and measurement results show that it has an insertion loss less than 1.0dB and return loss better than 10dB in the pass bands. A bandwidth ratio of 109.49% has been achieved. Measurement results agree well with simulation results. The dimensions of the filter are 4×8×0.57mm3. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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