The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 04, 1998
Filed:
Oct. 06, 1995
Applicant:
Inventors:
Ali Fotowat-Ahmady, San Rafael, CA (US);
Mehran Ali-Ahmad, Toronto, CA;
Nasrollah Saeed Navid, Saratoga, CA (US);
Assignee:
Philips Electronics North America Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B / ;
U.S. Cl.
CPC ...
4552262 ; 4552264 ;
Abstract
A new addition to log amplifiers for received signal strength indication in cellular telephony and telecommunications applications extends the large signal end of the signal strength curve by adding rectifiers to the input of an intermediate frequency amplifier, without degrading the noise figure or impedance characteristics thereof. The new addition to log amplifier outputs a signal which is linearly related to an input signal to the log amplifier.