## Abstract The reβentrant coupling structure is applied in a parallelβcoupled microstrip filter design to ensure a wide bandwidth, compactness, and the suppression of spurious. Fan design graphs are provided to determine the dimensions of each coupled stage. The features and advantages of the prop
Miniaturized parallel coupled-line bandpass filter with spurious-response suppression
β Scribed by Pedro Cheong; Si-Weng Fok; Kam-Weng Tam
- Book ID
- 114660264
- Publisher
- IEEE
- Year
- 2005
- Tongue
- English
- Weight
- 444 KB
- Volume
- 53
- Category
- Article
- ISSN
- 0018-9480
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π SIMILAR VOLUMES
## Abstract Defectedβground coupled microstrip lines (DCL) bandpass filter is proposed. The length of the proposed filter is quarter the length of conventional coupledβline filter and it has a wide stopband and suppressed spurious resonances up to 4f~0~, where f~0~ is the filter central frequency.
In this paper, three methods to reject the first spurious harmonic in parallelcoupled microstrip filters are investigated. The authors proposed an extension of these approaches to also suppress the second unwanted passbands while keeping the initial passband practically unchanged. Then, two of these