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:
Dec. 05, 1989
Filed:
Jul. 01, 1987
Mark I Van Horn, Bedford, TX (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A load pull isolation switch for a signal source is discolsed which substantially eliminates the effects of load pull caused by a variable impedance load when selectively coupled and decoupled to a signal source. By judiciously choosing the timing criteria for activating the isolation switch, convention load pull isolation stages are eliminated. In another embodiment, the load pull isolation switch is disclosed as incorporated in a mobile radio having a fast locking synthesizer. The timing of the operation of the isolation switch is controlled by a microprocessor-controller which not only handles data and control functions for the mobile radio, but also has the necessary method steps incorporated as software within the microprocessor-controller. Such an arrangement is useful for sending voice or data as in a time division multiplex system.