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- Title
Design of Compact Planar Diplexer Based on Novel Spiral-Based Resonators.
- Authors
Ke Lu; Guang-Ming Wang; Hai-Yang Xu; Xiong Yin
- Abstract
A miniaturized planar diplexer utilizing the novel spiral-based resonators is proposed. The given cell which is initially proposed in this article is composed of two separated rectangular spirals which are asymmetrical to each other and thus, it is called as 'asymmetrical separated spirals resonator' (ASSR). ASSR has more superior transmission property than the previous prototype and extremely compact dimension is also achieved. It is demonstrated that ASSR can exhibit bandpass performance with high frequency selectivity and good transmission property within the relatively low frequency band. Based on the given characteristic, one planar diplexer composed of T-junction and two ASSRs is synthesized and the fabricated prototype with compact dimension is achieved, thanks to ASSRs explored. Simultaneously, the transversal dimension of each channel is extremely compact because ASSRs are completely embedded in the feed lines. Both the simulated and measured results indicate that satisfactory impedance matching and high isolation between two channeh" are achieved. Furthermore, the proposed diplexer is uniplanar and no dejected ground structure is introduced.
- Subjects
RESONATORS; PROTOTYPES; BANDPASS filters; PERFORMANCE evaluation; IMPEDANCE matching; COMPUTER simulation; COMPRESSIBILITY
- Publication
Radioengineering, 2012, Vol 21, Issue 1, p528
- ISSN
1210-2512
- Publication type
Article