Patents by Inventor Bahne P. Bahnsen

Bahne P. Bahnsen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4408097
    Abstract: An AM-FM receiver which uses the FM-demodulator for demodulating the phase modulated sidebands of an AM-stereo signal. Therefore, it has to operate as a FM-demodulator also at the AM-intermediate frequency which is achieved by means of a parallel resonant circuit tuned to the AM-intermediate frequency (455 KHz) and arranged in series with a parallel resonant circuit which is tuned to the FM-intermediate frequency (10.7 MHz). The FM-demodulator is followed by an integrating circuit which only becomes operative in the event of AM-reception and which forms a phase demodulator in conjunction with the FM-demodulator. The additional costs and efforts for the reception of AM-stereo signals is therefore extremely small. In addition to the components which are already required in an AM-FM radio receiver only a further parallel resonant circuit and an integrating circuit are required.
    Type: Grant
    Filed: May 4, 1981
    Date of Patent: October 4, 1983
    Assignee: U.S. Philips Corporation
    Inventors: Bahne P. Bahnsen, Willy Kanow