专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

11. 发明授权

US07292831B2 Radio communicate method and system 失效
标题翻译：无线电通信方式和系统
公开(公告)号：US07292831B2
公开(公告)日：2007-11-06
申请号：US10508488
申请日：2003-01-09
申请人： Yozo Shoji , Kiyoshi Hamaguchi , Hiroyuki Tsuji , Hiroyo Ogawa
发明人： Yozo Shoji , Kiyoshi Hamaguchi , Hiroyuki Tsuji , Hiroyo Ogawa
IPC分类号： H04B1/18 , H01Q9/00 , H01Q21/08 , G01S5/02 , G01S5/04
CPC分类号： H01Q1/2208 , H01Q1/22 , H01Q21/08 , H01Q23/00
摘要： A transmitter 1 transmits from a transmission antenna 7 a mixture signal containing a radio-frequency (RF)-band modulated signal, and a portion of power of a local oscillation signal used for frequency conversion. Meanwhile, a receiver 8 detects the transmitted signal by means of a reception antenna-detection section 9. In the reception antenna-detection section 9, a plurality of base unit reception circuits 11 are disposed. Each base unit reception circuit 11 includes a planar printed antenna 12 such as a patch antenna, an amplifier circuit 13 formed on a very small planar circuit by means of an MMIC technique, and a mixer circuit 14 serving as a square-law detector. Respective outputs of the base unit reception circuits 11 are power-mixed and fed to the IF signal demodulation section. The IF signal demodulation section 10 demodulate reception data. This configuration enables realization of a reception antenna which occupies a very small space, has a detection function and a high gain, and has a wide beam characteristic comparable to that of a single-element antenna.
摘要翻译：发送器1从发送天线7发送包含射频（RF）带调制信号和用于频率转换的本地振荡信号的一部分功率的混合信号。同时，接收机8通过接收天线检测部分9检测发射信号。在接收天线检测部9中设置有多个基本单元接收电路11。每个基本单元接收电路11包括平面印刷天线12，例如贴片天线，通过MMIC技术形成在非常小的平面电路上的放大器电路13，以及用作平方律检测器的混频器电路14。基本单元接收电路11的各个输出被电力混合并馈送到IF信号解调部分。 IF信号解调单元10对接收数据进行解调。该配置能够实现占用非常小的空间，具有检测功能和高增益的接收天线，并且具有与单元件天线相当的宽光束特性。

12. 发明授权

US07251461B2 Wireless communications system, wireless transmitter, and wireless receiver 失效
标题翻译：无线通信系统，无线发射机和无线接收机
公开(公告)号：US07251461B2
公开(公告)日：2007-07-31
申请号：US10271785
申请日：2002-10-17
申请人： Yozo Shoji , Kiyoshi Hamaguchi , Hiroyo Ogawa
发明人： Yozo Shoji , Kiyoshi Hamaguchi , Hiroyo Ogawa
IPC分类号： H04B1/00
CPC分类号： H04B1/0483 , H04B1/28 , H04B7/04 , H04B7/0615
摘要： This invention includes a wireless transmitter comprising an IF-signal generator that modulates input signals into those of an intermediate frequency band, signal distributors that distribute signals from the IF-signal generator, and a plurality of signal-transmission units that convert the signals distributed by the signal distributors into those of a radio frequency band, and then transmit the converted radio signals. The invention also includes a wireless receiver that receives the radio-frequency-band modulated signals and restores the signals of the intermediate frequency band. In this way, effective diversity is realized and signal interruptions are prevented. In addition, a handy, low-cost wireless communications system is provided.
摘要翻译：本发明包括一种无线发射机，其包括将输入信号调制成中频带的IF信号发生器，分配来自IF信号发生器的信号的信号分配器，以及多个信号传输单元，其将由将信号分配给无线电频段，然后发送转换后的无线电信号。本发明还包括一个无线接收器，它接收射频带调制信号并恢复中频带的信号。以这种方式，实现有效的分集，并且防止信号中断。另外，还提供了一种方便，低成本的无线通信系统。

13. 发明申请

US20050176377A1 Radio communication method and system for performing communication among a plurality of radio communication terminals 失效
标题翻译：用于在多个无线电通信终端之间执行通信的无线电通信方法和系统
公开(公告)号：US20050176377A1
公开(公告)日：2005-08-11
申请号：US10504059
申请日：2003-01-09
申请人： Yozo Shoji , Kiyoshi Hamaguchi , Hiroyo Ogawa
发明人： Yozo Shoji , Kiyoshi Hamaguchi , Hiroyo Ogawa
IPC分类号： H03B1/04 , H03B5/12 , H04B1/26 , H04B1/40 , H04L12/28 , H04W56/00 , H04W84/12 , H04B1/00 , H04B7/00
CPC分类号： H04B1/405 , H03B2202/027
摘要： A reference local oscillation signal transmission station 1 radiates a reference local oscillation signal to a service zone. A portion of the signal received by each radio slave station terminal 2 is branched and fed to an injection locked oscillator 6. As a result, a local oscillation signal which is synchronized with the reference local oscillation signal is obtained. In the slave station terminal 2, the thus-obtained local oscillation signal is fed to a transmission frequency converter (mixer) 7 and a reception frequency converter (mixer) 8. An IF band transmission modulated signal is fed to the mixer 7 for frequency conversion to a radio frequency band, and the thus-obtained radio-frequency modulated signal is transmitted. Meanwhile, a received radio-frequency modulated signal is fed to the mixer 8 for down conversion, and the thus-obtained signal is fed to an IF band demodulator 10 so as to restore an information signal. The present invention not only solves the problem of deterioration of signal quality stemming from phase noise and frequency offset generated in a millimeter wave band oscillator, but also improves the efficiency of frequency use.
摘要翻译：参考本地振荡信号发送站1将参考本地振荡信号发射到服务区。由每个无线电从站终端2接收的信号的一部分被分支并馈送到注入锁定振荡器6。结果，获得与参考本地振荡信号同步的本地振荡信号。在从站终端2中，将如此获得的本地振荡信号馈送到发送频率转换器（混频器）7和接收频率转换器（混频器）8。将IF频带发送调制信号馈送到用于频率转换的混频器7 发送到无线电频带，并且发送由此获得的射频调制信号。同时，将接收到的射频调制信号馈送到混频器8进行下变频，将这样获得的信号馈送到IF频带解调器10，以恢复信息信号。本发明不仅解决了在毫米波段振荡器中产生的相位噪声和频率偏移引起的信号质量恶化的问题，而且提高了频率使用的效率。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式