Advanced microwave filter design
| dc.contributor.author | Mokhtaari, Marjan | |
| dc.contributor.supervisor | Bornemann, J. | |
| dc.contributor.supervisor | Amari, Smain | |
| dc.date.accessioned | 2010-04-13T22:42:02Z | |
| dc.date.available | 2010-04-13T22:42:02Z | |
| dc.date.copyright | 2008 | en |
| dc.date.issued | 2010-04-13T22:42:02Z | |
| dc.degree.department | Dept. of Electrical and Computer Engineering | en |
| dc.degree.level | Doctor of Philosophy Ph.D. | en |
| dc.description.abstract | This thesis presents new procedures and guidelines for the design of advanced microwave filters. Practical implementations include dual-band, multi-band and ultra-wideband filters for applications in wireless and telecommunication systems. The traditional narrow-band coupling-matrix approach is extended to include multiple and out-of-band resonances, which allows the model to accurately predict and design the filter performance over a wide frequency range. A variety of coupling scenarios are presented and their advantages over current designs demonstrated. The approach includes the placement of transmission zeros in order to obtain quasi-elliptic responses, improve stopband performance and generate sharp transitions from the passbands to their adjacent stopbands. In order to contribute to filter miniaturization, bandwidth enhancement and manufacturing simplicity, a new class of step-impedance resonators is proposed and their harmonic tuning properties utilized. Advanced coupling configurations are realized, which are applicable to single- or multi-band filter operations with bandwidths ranging from a few percent to fifty percent. Moreover, the developed design procedures are applied to ultra-wideband filters covering bandwidths of up to 150 percent. All filters designed with the procedures developed in this thesis are validated by several commercially available electromagnetic field-solver packages, in-house numerical codes and/or measurements. The excellent overall agreement between computational and experimental results verifies the advanced filter design procedures presented in this thesis. | en |
| dc.identifier.uri | http://hdl.handle.net/1828/2595 | |
| dc.language | English | eng |
| dc.language.iso | en | en |
| dc.rights | Available to the World Wide Web | en |
| dc.subject | Microwave filters | en |
| dc.subject | Wireless communication systems | en |
| dc.subject | Telecommunications | en |
| dc.subject.lcsh | UVic Subject Index::Sciences and Engineering::Engineering | en |
| dc.title | Advanced microwave filter design | en |
| dc.type | Thesis | en |