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:
Nov. 14, 1995
Filed:
Aug. 23, 1994
Ian G Watson, Swindon, GB;
Abstract
A logarithmic detector having a first input line linked to the base of the first transistor, a second line linked to the base of the second transistor, a third input line linked to the bases of third and fourth transistors, a fourth input line linked to the bases of fifth and sixth transistors, a first output line linked to the collectors of the third and sixth transistors a second output line linked to the collectors of the fourth and fifth transistors and emitters of the third and fifth transistors being linked through the first and second impedances respectively to connect to the first transistor, the emitters of the fourth and sixth transistors being linked through third and fourth impedances to the collector of the second transistor and the emitters of the first and second transistors being linked through 5th and 6th impedances respectively to a current source connected to earth.