| タイトル | "The Design of a Compact, Wide Spurious-Suppression Bandwidth Bandpass Filter Using Stepped Impedance Resonators" |
| 本文（外部サイト） | http://hdl.handle.net/2060/20050180325 |
| 著者（英） | Laskar, Joy; Wollack, Edward J.; U-Yen, Kongpop; Doiron, Terence; Papapolymerou, John |
| 著者所属（英） | NASA Goddard Space Flight Center |
| 発行日 | 2005-02-04 |
| 言語 | eng |
| 内容記述 | We propose an analytical design for a microstrip broadband spurious-suppression filter. The proposed design uses every section of the transmission lines as both a coupling and a spurious suppression element, which creates a very compact, planar filter. While a traditional filter length is greater than the multiple of the quarter wavelength at the center passband frequency (lambda(sub g)/4), the proposed filter length is less than (order n(Ssup th) + l)center dot lambda(sub g)/8. The filter s spurious response and physical dimension are controlled by the step impedance ratio (R) between two transmission line sections as a lambda(sub g)/4 resonator. The experimental result shows that, with R of 0.2, the out-of-band attenuation is greater than 40 dB; and the first spurious mode is shifted to more than 5 times the fundamental frequency. Moreover, it is the most compact planar filter design to date. The results also indicate a low in-band insertion loss. |
| NASA分類 | Numerical Analysis |
| 権利 | No Copyright |
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