Reconfigurable frequency filter

Details Reconfigurable frequency filter Reconfigurable frequency filter

2006-07-26

2008-08-26

Le, Dinh T. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

Unwanted signal suppression

C327S552000, C327S553000

Reexamination Certificate

active

07417495

ABSTRACT:
There are various mobile communication standards such as GSM, EDGE, and W-CDMA. For a GSM or EDGE system, a receiver must be configured to work with an IF signal with a center frequency and bandwidth of 200 KHz. For WCDMA system, the same receiver must be configured to work with an IF signal with a center frequency of 600 KHz to 1000 KHz and band width of 2000 KHz. Accordingly, a configurable frequency IF filter with the capability to operate with multiple standards is provided.

REFERENCES:
patent: 5621340 (1997-04-01), Lee et al.
patent: 6304134 (2001-10-01), Pavan
patent: 6480064 (2002-11-01), Cyrusian
patent: 6677822 (2004-01-01), Hasegawa
patent: 6958652 (2005-10-01), Kim et al.
patent: 7061309 (2006-06-01), Kato et al.
patent: 2003/0006834 (2003-01-01), Morie et al.
patent: 2005/0162230 (2005-07-01), Tran et al.
Extended European Search Report to European Application No. 07004090.2-1233 completed on Jan. 10, 2008, 5 pages.
Partial European Search Report to European Application No. 07004090.2-1233 completed on Oct. 10, 2007, 5 pages.

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