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:
May. 01, 2001
Filed:
Jul. 26, 1999
Toshifumi Nakatani, Moriguchi, JP;
Hisashi Adachi, Mino, JP;
Hiroaki Kosugi, Hirakata, JP;
Youichi Morinaga, Yokohama, JP;
Hiroyuki Itokawa, Yokohama, JP;
Shunsuke Hirano, Sagamihara, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
When the radio circuit apparatus is transmitting, the output signal of the first local oscillator,is inputted to the transmitted frequency converter,as well as to the frequency divider,, and then the output signal of the frequency divider,is inputted to the modulator,. The modulator,modulates the output signal of the frequency divider,with a base band signal. The output signal of the modulator,is inputted to the transmitted frequency converter,to be converted to the frequency of a transmitted signal by the output signal of the first local oscillator,When the radio circuit apparatus is receiving, the output signal of the low noise amplifier,is inputted to the first frequency converter,to be converted to the first intermediate frequency by the output signal of the first local oscillator,The output signal of the filter,is inputted to the second frequency converter circuit,to be converted to the second intermediate frequency by the output signal of the second local oscillator,Thereby, unnecessary components for transmission can be easily lowered to make it possible to miniaturize the radio circuit apparatus.