Visteon Global Technolgoies, Inc.

Ford Motor Company Limited

Milan Cvetkovic

David John McCall

Martin Gerard Page

John F Kennedy

Yao H Kuo

Christopher Stanley Nicholas

A proportional diversity radio system for mobile vehicles combats both short time delay multipath and long time delay multipath by mixing separate tuner signals obtained using separate space diversity antennas. The relative contribution of each tuner signal to a final mixed tuner output is determined in direct relation to their respective signal strength signals and inverse relation to their respective long time delay multipath noise signals.

Proportional diversity radio receiver system

An RDS receiver having dual tuners and dual antennas operates in two distinct modes, a diversity mode and a non-diversity mode. Diversity mode is when both tuners are tuned to a signal with the same program audio content and the audio from both tuners is blended together in a manner to minimize the effects of multipath distortion. In non-diversity mode, a forcing circuit isolates the tuner output signals so that one tuner provides the audio output while the other can be retuned to any other frequency for purposes of gathering RDS data.

Diversity radio system with RDS

A space diversity, multiple-tuner radio receiver obtains substantially noise free reception under most signal conditions. The tuner outputs are mixed in proportion with the signal quality as determined by detecting noise in each tuner output signal. Long-time-delay multipath distortion, adjacent channel interference, and co-channel interference are reduced by selecting predetermined antenna pattern combinations in response to high noise levels being present from both tuners.

Growing community of inventors

Rochester, United Kingdom

Milan Cvetkovic