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:
Nov. 18, 1997
Filed:
Jan. 26, 1996
Wilson Fok, Holmdel, NJ (US);
Lucent Technologies Inc., Murray Hill, NJ (US);
Abstract
Improved RF switching techniques operate in conjunction with an existing cellular telephone having an RF amplifier, an antenna, receiver circuitry, a duplexer, and a battery. The duplexer has a first port adapted for connection to the receiver circuitry, a second port adapted for connection to the RF amplifier, and a third port adapted for connection to the antenna. The improved RF switching techniques are characterized by a first switch, a second switch, and a battery of less than 6.0 volts. The first switch, coupled to the RF amplifier, connects the RF amplifier to any one of the antenna and the second port of the duplexer. A second switch, coupled to the antenna, connects the antenna to any one of the RF amplifier and the third port of the duplexer. During transmit-only operation, the first switch connects the RF amplifier to the antenna. During receive-only operation, and also during transmit-receive operation, the first switch connects the RF amplifier to the second port of the duplexer and the second switch connects the antenna to the third port of the duplexer.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile