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:
Mar. 19, 1985
Filed:
Nov. 25, 1983
Donald R Green, Jr, North Andover, MA (US);
Charles O Stevens, II, Plaistow, NH (US);
AT&T Bell Laboratories, Murray Hill, NJ (US);
Abstract
A single adjustment phase resolver uses common voltage control in a dual inversely tracking bridged-Tee attenuator circuit (21) to provide a variable relative phase displacement between two output signals whose amplitude levels are maintained equal and constant throughout the range of the phase adjustment. The dual bridged-Tee attenuator is implemented using two variolossers wherein the PIN diodes are serially connected in two pairs (51 and 52, 53 and 54) and the pairs are oppositely poled from one another. An automatic gain control circuit (16, 24 and 26) adjusts the input signal level to compensate for a latitude of discrepancy between the inverse tracking variolossers.