Compact semilumped elliptic-function low-pass filter using microstrip meander line.

Autor: Ju Gab Lee, Wu Seong Lee, Jae Jong Ryu, Yeon Kwan Moon, Joong Ho Jang, Ha Chul Kim, Hyun Chul Choi
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Zdroj: Microwave & Optical Technology Letters; Jul2007, Vol. 49 Issue 7, p1777-1779, 3p, 2 Diagrams, 3 Graphs
Abstrakt: For the size reduction and sharp attenuation of the low-pass filter in lower RF frequency range, a semilumped elliptic-function low-pass filter was proposed using microstrip meander line, chip capacitor, and radial stubs. To estimate more accurate inductance of microstrip meander line, it was modeled in an inhomogeneous dielectric environment, and then the calculated inductance was compared with the conventional case. To provide an additional attenuation pole in stop-band, radial stubs were added to the proposed structure. The 3-order low-pass filter has a cutoff frequency of 1GHz and dimension of 14.6 × 16.3 mm2 on the substrate with a relative dielectric constant of 3.38. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 1777–1779, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22545 [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index