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:
Apr. 05, 1994
Filed:
Sep. 03, 1992
John V Bellantoni, Santa Clara County, CA (US);
Watkins Johnson Company, Palo Alto, CA (US);
Abstract
High-frequency limiter and switch-limiter circuits having reduced insertion loss and improved recovery time are disclosed herein. The high-frequency switch-limiter includes at least one input port and a high-frequency signal path between the input port and a common arm. An input diode generates a first bias current in response to incidence upon the input port of high-energy signals in excess of a predefined power level. A set of protection diodes reflects the high-energy signals upon being switched to an ON state by a portion of the first bias current or by a second bias current, with the protection diodes being disposed to reflect signal energy propagated by the high-frequency signal paths when in the ON state and to pass signal energy propagated by the high-frequency signal paths when in an OFF state. Switching of the protection diodes between the ON and OFF states is expedited by modifying the impedance of a bias network included within a driver network, wherein the driver network is disposed to generate the second bias current in response to a switch control signal.