Patents by Inventor Jeannine L. G. Henaff

Jeannine L. G. Henaff 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).

  • Frequency modulators for use in microwave links
    Patent number: 4271504
    Abstract: Frequency modulators for use in microwave link transmission systems include acoustic surface wave (ASW) oscillators. Each frequency modulator comprises two voltage control quadripole ASW oscillators. Control inputs of the two ASW oscillators receive modulation signal in opposite phase. Outputs of ASW oscillators are mixed in a mixer for delivering an IF signal. Thus frequency deviation is larger than in a conventional arrangement. Moreover, surface wave oscillators make it possible to directly insert a service channel signal in a microwave link repeater, without demodulation and modulation operations.
    Type: Grant
    Filed: November 17, 1978
    Date of Patent: June 2, 1981
    Inventors: Pierre C. Brossard, Jeannine L. G. Henaff