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:
Sep. 10, 1991
Filed:
May. 02, 1990
Applicant:
Inventors:
Edward T Clark, Plantation, FL (US);
Enrique Ferrer, Miami, FL (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01P / ;
U.S. Cl.
CPC ...
307570 ; 307242 ; 307112 ; 455277 ; 455 78 ; 333103 ;
Abstract
A voltage multiplier rectifier filter circuit comprising capacitors C3 and C4 and diodes D1 and D3 multiples, rectifies and filters the voltage at an input terminal (T1) of the switch. A diode (D2) is connected to the output of the multiplier-rectifier-filter circuit to provide a lesser bias voltage in the absence of a signal at the input terminal (T1). Four transistors (Q1-Q4) switch this bias voltage ON and OFF to the gates of four GaAs transistors (S1-S4). The GaAs transistors selectively couple signals between the input and output signal terminals (T1-T4) of the switch.