✦ LIBER ✦
Low-spurious-response coaxial-line BPF with saucer-loaded stepped-impedance resonators designed with mode-matching technique
✍ Scribed by Hiromitsu Uchida; Tetsu Ohwada; Naofumi Yoneda; Norio Takeuchi; Moriyasu Miyazaki; Yoshihiko Konishi
- Publisher
- John Wiley and Sons
- Year
- 2004
- Tongue
- English
- Weight
- 362 KB
- Volume
- 14
- Category
- Article
- ISSN
- 1096-4290
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✦ Synopsis
A novel stepped-impedance resonator with a thin metal saucer is proposed in order to reduce spurious-response levels in a coaxial-line bandpass filter (BPF). In designing the BPF, the mode-matching technique is employed for fast and accurate calculation of coaxial-line discontinuities. A prototype BPF obtains a spurious-response level of less than ؊55 dB in the frequency band from 2f 0 to 9f 0 , where f 0 is the pass-band center frequency.