Hwang, C.J., Lok, L.B., Thayne, I.G. and Elgaid, K. (2009) Parallel coupled-line bandpass filter with branch-line shape for G-band frequency. Electronics Letters, 45(16), pp. 838-839. (doi: 10.1049/el.2009.0716)
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Abstract
A parallel coupled-line planar bandpass filter (BPF) with branch-line shape using coplanar waveguide technology on GaAs substrate is presented. The unit parallel coupled-line BPF utilises a parallel coupledline resonator with an open-ended stub which has suppression response of spurious band. Four unit parallel coupled-line BPFs are integrated with branch-line shape and open-circuit stubs on input and output ports are also integrated for improvement of rejection performance. The proposed fourth-order filter was fabricated on GaAs substrate with dielectric thickness of 50 mm and gold thickness of 1.2 mu m. The fabricated fourth-order BPF shows a 3 dB bandwidth from 177 to 209 GHz frequency range with insertion loss of 6.5 dB, rejection of 38 dB and return loss better than 12 dB. It has a high resolution fractional bandwidth of 17%.
| Item Type: | Articles |
|---|---|
| Keywords: | Band, bandpass filter, engineering, england, frequencies, gaas, performance, resolution, substrate, suppression, technologies, technology, thickness |
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Thayne, Prof Iain and Elgaid, Dr Khaled and Lok, Dr Lai Bun |
| Authors: | Hwang, C.J., Lok, L.B., Thayne, I.G., and Elgaid, K. |
| College/School: | College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering |
| Journal Name: | Electronics Letters |
| Journal Abbr.: | Electron. lett. |
| Publisher: | The Institution of Engineering & Technology |
| ISSN: | 0013-5194 |
| ISSN (Online): | 1350-911X |
| Published Online: | 28 July 2009 |
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