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:
Jun. 07, 1994
Filed:
Jan. 08, 1992
Naoya Morita, Yamato, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A time-division duplex radio transceiver is disclosed which can avoid the deterioration of reception sensitivity and interferences in other radio communication equipments of the same kind which may be caused in the conventional transceiver by generation in the transceiver of an interfering signal of a transmission frequency or a frequency in the vicinity thereof, even upon reception. In the time-division duplex radio transceiver according to the present invention, in order to generate a carrier frequency signal in the transmission state or an intermediate frequency in a transceiver portion, there are provided an oscillator for oscillation at a frequency higher than the carrier frequency and the intermediate frequency, and frequency dividers for frequency-dividing an output of the oscillator, where the operation of the frequency dividers is stopped in the reception state. Accordingly, while the oscillation of the oscillator is always continued, it is possible to prevent the transmission frequency or the frequency in the vicinity thereof from being generated in the transceiver in the reception state.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile