Abstract
A novel method for spurious suppression in bandpass filter using Split-Mode Excitations (SME) is proposed. Distinct from traditional ways for spurious suppression, the proposed method uses different excitations for six-order quarter-wavelength resonators to obtain good out-of-band performance. According to the split-mode, the proposed bandpass filter with wideband spurious suppression was designed by using three effective excitations to produce three spurious conditions. In this way, the proposed circuit has a very small size, only amounting to 0.08 by 0.32 guided wavelength at the center frequency of 2.4 GHz. The out-of-band performance is improved easily and effectively with a rejection level better than 20 dB at least up to 20 GHz and done without using any cascaded circuits.
Original language | English |
---|---|
Pages (from-to) | 1501-1510 |
Number of pages | 10 |
Journal | Journal of Electromagnetic Waves and Applications |
Volume | 24 |
Issue number | 11-12 |
DOIs | |
Publication status | Published - 2010 Jul 1 |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- General Physics and Astronomy
- Electrical and Electronic Engineering