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:
Jun. 20, 2000
Filed:
May. 12, 1997
Jacob Mannerstrang.le, Gunnesbouagen, SE;
Telefonaktiebolaget LM Ericsson, Stockholm, SE;
Abstract
A phase shifting electric circuit (1) comprises units for conveying an input signal (V1) from a main signal input (12) to a main signal output (11). The circuit (1) has a first signal path (18), from the input (12) to the output (11), along which a connectable and disconnectable first active unit (3) is arranged and also a second signal path (19) along which a connectable and disconnectable second active unit (4) and a 180 degrees phase shifting unit (2) are arranged. By a method a selection is made which of the active units (3,4) is to be in a connected condition after which control signals (U1,U2) to the units (3,4) sets them in a connected and disconnected condition respectively with the outcome of a transmission from the output (11), depending on the selection, either a non-phase shifted signal (V1') or a 180 degrees phase shifted signal (V2'). Depending on the function of the active units (3,4) the signal (V1',V2') can also be affected in other respects than its relative phase.