Miniaturized parallel coupled line filter using lumped...

Details Miniaturized parallel coupled line filter using lumped... Miniaturized parallel coupled line filter using lumped...

2005-09-16

2008-08-05

Ham, Seungsook (Department: 2817)

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

Reexamination Certificate

active

07408431

ABSTRACT:
A parallel coupled line filter is miniaturized by using lumped capacitors and grounding the capacitors. The parallel coupled line filter includes a parallel coupled line, a first capacitor connected to one of two input ports of the parallel coupled line, and a second capacitor connected to one of two output ports of the parallel coupled line. The parallel coupled filter can be miniaturized to a desirable size, on the basis of relatively simple theoretical knowledge. The parallel coupled line filter exhibits excellent frequency selectivity and improved harmonic characteristics.

REFERENCES:
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patent: 6825738 (2004-11-01), Shumovich
patent: 2246670 (1992-02-01), None
Myoung et al., “Miniaturisation and harmonic suppression method of parallel coupled-line filters using lumped capacitors and grounding”, Electronics Letters vol. 41, No. 15, Jul. 21, 2005, pp. 1-2.

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