Amplifiers – With semiconductor amplifying device – Including gain control means
Patent
1998-12-09
2000-05-02
Pascal, Robert
Amplifiers
With semiconductor amplifying device
Including gain control means
330107, H03G 310
Patent
active
060577355
ABSTRACT:
An apparatus and method to obtain a high Q, narrowband active filter with high gain suitable for an integrated circuit implementation. The high Q is achieved via active feedback with an amplitude control loop. The frequency control of the active filter is achieved by means of a frequency locked loop. Both control loops compare the thermal noise of the active filter itself to voltage and frequency references to achieve the stable operating point. Control loops are normally slow relative to the transmitted data, hence avoiding the data altering the operating point of the filter.
REFERENCES:
patent: 3588725 (1971-06-01), Geffe
patent: 4204176 (1980-05-01), Takasaki et al.
patent: 4393514 (1983-07-01), Minakuchi et al.
patent: 5321852 (1994-06-01), Seong
patent: 5416441 (1995-05-01), Nagano
patent: 5896064 (1999-04-01), Kaku
Selectivity an Sensitivity Performances of Superregenerative Receivers; Swiss Federal Institute of Technology Lausanne, Electronics Laboratories; 4 pgs.
FA 8.4: A 2V, 600A, 1GHz, BiCMOS Super-Regenerative Receiver from the IEEE; Patrick Favre, et al.; 1998; pp. 8.4-1-through 8.4-10.
Electronics Designers Handbook, Second Edition; Robert W. Landee, et al.; 1977; pp. 23-3 and 24-4.
Choe Henry
Pascal Robert
Philsar Semiconductor Inc.
LandOfFree
Amplifier for continuous high gain, narrowband signal amplificat does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Amplifier for continuous high gain, narrowband signal amplificat, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Amplifier for continuous high gain, narrowband signal amplificat will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1596794