This dissertation studies and implements highly miniaturized bandpass filter designs for wireless System-in-Package (SiP) applications. Based on the coupling matrix synthesis method, the external quality factors and coupling coefficients can be extracted by selecting the proper tapped-line feeding position and coupling spacing in geometrical configuration. Despite their high performance, most conventional microstrip bandpass filter designs require a bulky area for achieving, making them difficult to implement SiP applications. This dissertation first develops a stacked LC resonator and a stacked spiral resonator (SSR) in an embedded passive substrate (EPS) for realizing miniature single- and multi-band bandpass filters. Moreover, multiple transmission zeros created on both sides of each passband provide high stopband roll-off rates. The designed performance and size are comparable to those of low-temperature co-fired ceramic (LTCC) bandpass filters. As another conventional means of implementing RF passive components, the integrated passive device (IPD) process can produce large-value inductors and high-density capacitors, simultaneously. This dissertation fully utilizes the advantages of IPD technology to implement very compact bandpass filter designs with multiple transmission-zero frequencies at stopband by using a high-density wiring planar transformer configuration. Furthermore, due to the fully symmetric geometry, the transformer-coupled bandpass filter can be easily converted into a balun bandpass filter, capable of providing a superior balance performance with a significantly higher common mode rejection ratio (CMRR) level. The electromagnetic (EM) simulation results, as obtained by using Ansys-Ansoft HFSS, agree with the measurement results for all of the proposed designs in this dissertation.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0314112-175817 |
| Date | 14 March 2012 |
| Creators | Chen, Chien-Hsun |
| Contributors | Ching-Wen Tang, Lih-Tyng Hwang, Sheng-Fu Chang, Huey-Ru Chuang, Ken-Huang Lin, Kin-Lu Wong, Tzyy-Sheng Horng, Chie-In Lee, Chih-Wen Kuo |
| Publisher | NSYSU |
| Source Sets | NSYSU Electronic Thesis and Dissertation Archive |
| Language | English |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0314112-175817 |
| Rights | user_define, Copyright information available at source archive |
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