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:
Feb. 26, 2002
Filed:
Mar. 06, 2000
Applicant:
Inventors:
Gustavo D. Leizerovich, Aventura, FL (US);
Ramon Ponce, Sunrise, FL (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B 1/06 ; H04B 1/44 ;
U.S. Cl.
CPC ...
H04B 1/06 ; H04B 1/44 ;
Abstract
A PIN diode antenna RF switch especially suited for a multi-mode transceiver that includes a full duplex mode such as an AMPS analog mobile telephone. Six PIN diodes ( ) are configured as RF switches which are controlled by an arrangement of four DC switches ( ) to produce a high degree of isolation in a path parallel to a duplexer ( ) and low insertion loss in transmitting modes while optimizing current drain.