Second-order band-pass filter and wireless apparatus using...

Details Second-order band-pass filter and wireless apparatus using... Second-order band-pass filter and wireless apparatus using...

2009-01-21

2010-10-26

Jones, Stephen E (Department: 2817)

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

Reexamination Certificate

active

07821361

ABSTRACT:
A second-order band-pass filter for generating at least two transmission zeros includes a first signal terminal, a second signal terminal, a first transmission line resonator, a second transmission line resonator and an impedance inverter. The first transmission line resonator and the second transmission line resonator are symmetric to each other and coupled to the first signal terminal and the second signal terminal, which are formed by bending two quarter-wavelength open stubs and have an open circuit gap between the two terminals. The impedance inverter includes an inductor, a first micro strip line and a second micro strip line. The first micro strip line and the second micro strip line are symmetric to each other, and are coupled to the first signal terminal and the second signal terminal and coupled to a ground through the inductor, respectively.

REFERENCES:
patent: 7436274 (2008-10-01), Shih
patent: 7551046 (2009-06-01), Mei
patent: 2007/0216498 (2007-09-01), Chen
patent: 2008/0074213 (2008-03-01), Chen et al.
patent: 2009/0243759 (2009-10-01), Chen et al.
patent: 2010/0117765 (2010-05-01), Bourtoutian

Affiliated with

Also associated with

Rating

Second-order band-pass filter and wireless apparatus using... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Second-order band-pass filter and wireless apparatus using..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Second-order band-pass filter and wireless apparatus using... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4180631