公开(公告)号：US5926466A

公开(公告)日：1999-07-20

申请号：US648416

申请日：1996-05-15

Applicant: Kaoru Ishida ,  Hiroaki Kosugi ,  Fujio Sasaki ,  Yoichi Morinaga

Inventor： Kaoru Ishida ,  Hiroaki Kosugi ,  Fujio Sasaki ,  Yoichi Morinaga

IPC: H01P1/203 ,  H01P1/213 ,  H03B1/00 ,  H03H7/38 ,  H03H7/46 ,  H04B1/40 ,  H04B1/48 ,  H04B1/56 ,  H04J4/00 ,  H04L5/14

CPC classification number: H01P1/20345 ,  H01P1/2135 ,  H03H7/38 ,  H03H7/46 ,  H04B1/005 ,  H04B1/0057 ,  H04B1/006 ,  H04B1/406 ,  H04B1/48 ,  H03B2201/0208 ,  H03H2007/386

Abstract: A time division multiple access FDD wireless unit has a first local oscillator 8 for oscillating a first frequency; a second local oscillator 12 for oscillating a second frequency; a n-times multiplier 14 for multiplying the second frequency by n; a m-times multiplier 18 for multiplying the second frequency by m; a converter 6 for transmitting frequency of difference between a reception signal and an output of the first local oscillator 8; a converter 11 for transmitting frequency of sum or difference between an output of the converter 6 and an output of the n-times multiplier 14; modulator 19 for modulating an output of the m-times multiplier 18; a converter 22 for transmitting frequency of sum of an output of the modulator 19 and the output of m-times multiplier 18.

Abstract translation: 时分多址FDD无线单元具有用于振荡第一频率的第一本地振荡器8; 用于振荡第二频率的第二本地振荡器12; 用于将第二频率乘以n的n次乘法器14; 用于将第二频率乘以m的m倍乘法器18; 用于发送接收信号和第一本地振荡器8的输出之间的差的频率的转换器6; 用于发送转换器6的输出和n次乘法器14的输出之间的和或差的频率的转换器11; 用于调制m次乘法器18的输出的调制器19; 用于发送调制器19的输出和m次乘法器18的输出的和的频率的转换器22。

公开(公告)号：US5770970A

公开(公告)日：1998-06-23

申请号：US705244

申请日：1996-08-30

Applicant: Hikaru Ikeda ,  Hiroaki Kosugi ,  Kaoru Ishida ,  Nobuo Fuse ,  Hideki Yagita ,  Hiroshi Haruki

Inventor： Hikaru Ikeda ,  Hiroaki Kosugi ,  Kaoru Ishida ,  Nobuo Fuse ,  Hideki Yagita ,  Hiroshi Haruki

IPC: H03F3/24 ,  H03F3/21 ,  H03F3/60 ,  H04B1/04 ,  H03F3/68

CPC classification number: H03F3/211 ,  H03F3/604

Abstract: The output of a digital modulator is put into a power amplifying device, is distributed into n pieces in an n-power divider in the power amplifier, passes through n input phase shifters differing individually in the phase change amount, is amplified by n power amplifiers, passes through n output phase shifters to match the phase of n signals, is combined in an n-power combiner, and is issued from an output terminal to a phase shifter, and the output of the phase shifter is issued to a transmission antenna. Herein, the phase value of the phase shifter is determined so as to extend the region of the output load impedance for satisfying the specific value of unwanted radiation, and so that the output load impedance range of the load impedance of the power amplifier may be optimize to the impedance change range of the trans missionantenna, thereby eliminating the isolator and presenting a transmitting device of a portable wireless system realizing smaller size, higher performance, and lower cost of portable wireless system.