Printed bandpass filter for a double conversion tuner

Details Printed bandpass filter for a double conversion tuner Printed bandpass filter for a double conversion tuner

2006-08-01

2006-08-01

Pascal, Robert (Department: 2817)

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

C333S219000, C333S185000, C333S167000

Reexamination Certificate

active

07084720

ABSTRACT:
A printed bandpass filter is mounted on a precision substrate to eliminate the need for post-fabrication tuning. The filter input is capacitively coupled to a series of quarter wavelength resonators and the filter output. The quarter wavelength resonators are printed as spirals to reduce filter size. The resonators define the bandpass characteristics of the filter. The filter also weakly couples the input signal to the filter output in a manner to cancel the signal image. Mechanical clips mitigate thermal stress on solder connections when the precision substrate is mounted on a second printed circuit board.

REFERENCES:
patent: 4418324 (1983-11-01), Higgins
patent: 4423396 (1983-12-01), Makimoto et al.
patent: 4488130 (1984-12-01), Young et al.
patent: 4740765 (1988-04-01), Ishikawa et al.
patent: 4757285 (1988-07-01), Krause
patent: 4801905 (1989-01-01), Becker
patent: 4881043 (1989-11-01), Jason
patent: 5192926 (1993-03-01), Sogo et al.
patent: 5739193 (1998-04-01), Walpita et al.
patent: 5825263 (1998-10-01), Falt
patent: 5896073 (1999-04-01), Miyazaki et al.
patent: 5949295 (1999-09-01), Schmidt
patent: 5955931 (1999-09-01), Kaneko et al.
patent: 5986525 (1999-11-01), Sasaki et al.
patent: 6100761 (2000-08-01), Ezell
patent: 6108569 (2000-08-01), Shen
patent: 6130189 (2000-10-01), Matthaei
patent: 6130591 (2000-10-01), Tsuzuki
patent: 6191665 (2001-02-01), Chan et al.
patent: 6252476 (2001-06-01), Maloratsky
patent: 6259752 (2001-07-01), Domino et al.
patent: 6288609 (2001-09-01), Brueske et al.
patent: 6411181 (2002-06-01), Ishikawa et al.
patent: 6438394 (2002-08-01), Zhang
patent: 6448640 (2002-09-01), Corisis
patent: 6448873 (2002-09-01), Mostov
patent: 6486754 (2002-11-01), Hidaka et al.
patent: 6496710 (2002-12-01), Tsuzuki
patent: 6522217 (2003-02-01), Shen
patent: 6597265 (2003-07-01), Liang et al.
patent: 6639909 (2003-10-01), Sakuma
patent: 6771774 (2004-08-01), Phan et al.
patent: 0 506 476 (1992-09-01), None
patent: 5-308204 (1993-11-01), None
patent: 8-65007 (1996-03-01), None
patent: 11-317603 (1999-11-01), None
Kuo, J.-T., et al., “Microstrip Elliptic Function Filters with Compact Miniaturized Hairpin Resonators,” IEEE, pp. 861-864 (1999).
European Patent Office English-language Abstract for JP 05308204, published Nov. 19, 1993, 1 page.
European Patent Office English-language Abstract for JP 08065007, published Mar. 8, 1996, 1 page.
European Patent Office English-language Abstract fo JP 11317603, published Nov. 16, 1999, 1 page.
European Search Report from European Patent Application No. 03250090.2, dated Jan. 14, 2004, 3 pages.
GIL Technologies,GML 1000 High Frequency Laminate,at http://www.shfmicro.com/gil20.pdf, 1 page (date unknown).
Matthaei, G. et al.,Microwave Filters, Impedence-Matching Networks and Coupling Structures,Artech House, Inc., entire book submitted (1980).

Affiliated with

Also associated with

Rating

Printed bandpass filter for a double conversion tuner does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Printed bandpass filter for a double conversion tuner, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Printed bandpass filter for a double conversion tuner will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3642808