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:
Feb. 28, 2017
Filed:
Nov. 28, 2014
Applicant:
Akg Acoustics Gmbh, Vienna, AT;
Inventor:
Heinrich Kofler, Vienna, AT;
Assignee:
AKG Acoustics GmbH, Vienna, AT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R 1/08 (2006.01); H04B 1/18 (2006.01);
U.S. Cl.
CPC ...
H04R 1/08 (2013.01); H04B 1/18 (2013.01); H04R 2420/07 (2013.01); H04R 2499/11 (2013.01);
Abstract
The invention concerns an antenna system of a radio microphone that includes an antenna path starting at an in port and ending at an out port along with an amplifier and a radio frequency (RF) cable. In order to compensate for various cable attenuations, an attenuator is provided in series with a variable slope compensator between the amplifier and the RF cable. In order to avoid a negative effect on a large signal behavior of variable slope compensators, field effect transistors (FETs) or pin diodes are used for switching of the resistances so that a large signal behavior is achieved.