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1. 发明公开

EP2129069A4 RADIO COMMUNICATION SYSTEM 审中-公开
标题翻译： FUNKKOMMUNIKATIONSSYSTEM
公开(公告)号：EP2129069A4
公开(公告)日：2013-10-16
申请号：EP08721273
申请日：2008-03-04
申请人： MITSUBISHI ELECTRIC CORP , UNIV TOHOKU
发明人： FUJIMURA AKINORI , SOGABE YASUSHI , ISHIZU FUMIO , TAKAGI TADASHI , NAKASE HIROYUKI , TSUBOUCHI KAZUO , KAMEDA SUGURU , OSHIMA SHOICHI
IPC分类号： H04L27/26 , H04L27/20
CPC分类号： H04L27/2637 , H04L27/2014 , H04L27/2614 , H04L27/2653 , H04L27/2662 , H04L27/2691

2. 发明公开

EP1081871A4 RADIO TERMINAL 审中-公开
标题翻译： FUNKENDGERÄT
公开(公告)号：EP1081871A4
公开(公告)日：2004-06-23
申请号：EP99961470
申请日：1999-12-28
申请人： MITSUBISHI ELECTRIC CORP
发明人： ITOH KENJI , NAGANO HIROAKI , KATSURA TAKATOSHI , FUKUYAMA SHINJIROU , MOCHIZUKI MITSURU , MATSUNAMI YOSHINORI , SHIMOZAWA MITSUHIRO , ISHIZU FUMIO , HAYASHI RYOJI
IPC分类号： H03D7/14 , H04B1/30
CPC分类号： H03D7/1408 , H04B1/30
摘要： A portable telephone provided with a receiving circuit of direct conversion type has a passive low-pass filter (32) for filtering the interference waves of the channels other than the channel of concern and its adjacent channel interposed between an I-channel mixer (28) and a baseband circuit (36) and a passive low-pass filter (34) for filtering the interference waves of the channels other than the channel of concern and its adjacent channel interposed between a Q-channel mixer (30) and a baseband circuit (36). These low-pass filters (32, 34) are of differential type, so that their circuit scales are small and have low power consumptions. The interference waves are filtered by the passive low-pass filters (32, 34) and active low-pass filters (56, 58), so that only desired channels can be reliably received.
摘要翻译：具有直接转换型接收电路的便携式电话机具有一个无源低通滤波器（32），用于滤除除了涉及的信道之外的信道和插入在I信道混频器（28）之间的相邻信道的干扰波，和一个基带电路（36）和一个无源低通滤波器（34），用于对除了所关心的信道和插入在Q信道混频器（30）和基带电路（ 36）。这些低通滤波器（32,34）是差分型的，所以它们的电路规模很小并且功耗较低。干扰波由无源低通滤波器（32,34）和有源低通滤波器（56,58）滤波，使得只有期望的信道能够被可靠地接收。

3. 发明公开

EP1083667A4 RADIO TERMINAL DEVICE 审中-公开
标题翻译： FUNKENDGERÄT
公开(公告)号：EP1083667A4
公开(公告)日：2004-07-14
申请号：EP99906470
申请日：1999-02-24
申请人： MITSUBISHI ELECTRIC CORP
发明人： KATSURA TAKATOSHI , ITOH KENJI , FUKUYAMA SHINJIROU , MOCHIZUKI MITSURU , NAGANO HIROAKI , MATSUNAMI YOSHINORI , ISHIZU FUMIO , HAYASHI RYOJI
IPC分类号： H03G3/00 , H04L27/08 , H04B1/30 , H04B1/16 , H04B1/26
CPC分类号： H03G3/001
摘要： A logarithmic amplifier (11) having a large input range first detects the level of the baseband signal on the input side of a variable gain amplifier circuit (8). Based on the detected level, a control section (13) performs coarse feedfoward control of the gain of the variable gain amplifier circuit (8). A root-mean-square circuit (14) determines the output level of an A/D converter (10) and supplies it to the control section (13). Based on the detected level, the control section (13) performs fine feedback control of the variable gain amplifier (8).
摘要翻译：具有大输入范围的对数放大器（11）首先检测可变增益放大器电路（8）的输入侧上的基带信号的电平。基于检测到的电平，控制部分（13）对可变增益放大器电路（8）的增益进行粗馈源控制。均方根电路（14）确定A / D转换器（10）的输出电平并将其提供给控制部分（13）。基于检测到的电平，控制部分（13）执行可变增益放大器（8）的精细反馈控制。

4. 发明公开

EP2068578A4 CHANNEL ASSIGNMENT NOTIFYING METHOD, COMMUNICATION METHOD AND COMMUNICATION APPARATUS 有权
标题翻译：检测方法信道分配，通信方法及通信设备
公开(公告)号：EP2068578A4
公开(公告)日：2011-09-14
申请号：EP07805921
申请日：2007-08-09
申请人： MITSUBISHI ELECTRIC CORP
发明人： FUKUI NORIYUKI , TANI SHIGENORI , ISHIZU FUMIO
IPC分类号： H04W72/04 , H04W28/06 , H04W72/08 , H04W72/14
CPC分类号： H04W72/0486 , H04W72/042 , H04W72/085

5. 发明公开

EP0726662A3 Receiver and transmitter-receiver 失效
标题翻译：接收器和发射接收器
公开(公告)号：EP0726662A3
公开(公告)日：1998-07-08
申请号：EP95110564
申请日：1995-07-06
申请人： MITSUBISHI ELECTRIC CORP
发明人： ISHIZU FUMIO
IPC分类号： H04L27/22 , H03L7/099 , H04J3/06 , H04L7/00 , H04L7/033 , H04L27/00 , H04L27/233
CPC分类号： H04L27/2332 , H03L7/0992 , H04L7/0331 , H04L2027/0053 , H04L2027/0063
摘要： A receiver comprises a demodulator (2) for demodulating a received signal, a clock recovery circuit for regenerating a clock phase-synchronized with a symbol clock component included in the received signal and a frequency offset compensating means (82) for controlling a variable division ratio of a variable divider (6) constituting a phase-controlled loop of the clock recovery circuit so as to compensate for a frequency offset corresponding to a difference between a frequency of the symbol clock component included in the received signal and a free-running frequency of the clock recovery circuit. The receiver is constructed such that the compensation for the frequency offset is performed with operation timing different from that of the clock recovery circuit.

6. 发明公开

EP1617568A4 RADIO COMMUNICATION APPARATUS, TRANSMITTER APPARATUS, RECEIVER APPARATUS AND RADIO COMMUNICATION SYSTEM 有权
标题翻译：无线电通信装置，发送装置，接收装置与无线电通信系统
公开(公告)号：EP1617568A4
公开(公告)日：2009-07-01
申请号：EP04721692
申请日：2004-03-18
申请人： MITSUBISHI ELECTRIC CORP
发明人： TAIRA AKINORI , ISHIZU FUMIO
IPC分类号： H04B7/04 , H04B7/06 , H04J11/00 , H04J99/00 , H04L1/06 , H04L25/02
CPC分类号： H04B7/0626 , H04B7/0617 , H04B7/0667 , H04B7/0689 , H04B7/0691 , H04B7/0697 , H04B7/086 , H04B7/0891 , H04L1/0618 , H04L25/0202
摘要： For example, a channel division part (1) in the radio communication apparatus on a transmitting side divides, based on 'channel structure information indicative of MIMO channel structure method' notified from the radio communication apparatus on a receiving side, a transmitted signal into a plurality of channels. An STC part (4) performs an STC (Space Time Coding) processing for each divided channel to realize transmission diversity, while a transmission path estimation part (15) in the radio communication apparatus on the receiving side estimates a transmission path between the transmitting and receiving sides. A transmitting-side channel structure decision part (20) decides, based on a result of that transmission path estimation, a physical structure of the radio communication apparatus on the transmitting side and a physical structure of the radio communication apparatus on the receiving side, the MIMO channel structure, and then notifies the radio communication apparatus on the transmitting side of a result of that decision, that is, the channel structure information.

7. 发明公开

EP1083668A4 RADIO TERMINAL UNIT 审中-公开
标题翻译：无线终端
公开(公告)号：EP1083668A4
公开(公告)日：2004-06-16
申请号：EP99906486
申请日：1999-02-25
申请人： MITSUBISHI ELECTRIC CORP
发明人： KATSURA TAKATOSHI , ITOH KENJI , FUKUYAMA SHINJIROU , MOCHIZUKI MITSURU , NAGANO HIROAKI , MATSUNAMI YOSHINORI , ISHIZU FUMIO , HAYASHI RYOJI
IPC分类号： H03G3/00 , H03G3/30 , H04B1/30 , H04B1/16
CPC分类号： H03G3/3068 , H03G3/001
摘要： The level of a baseband signal on the input of a variable-gain amplifier (8) at the beginning of operation is detected by a logarithmic amplifier (11) having a wide dynamic range. A control section (18) controls the gain of a low-noise amplifier (15) in the stage preceding to a low-pass filter (7) and the gain of a variable-gain amplifier (8) according to the level detected so that the analog baseband part can be kept from saturation even if the level of the input signal is high.

8. 发明公开

EP1083669A4 RADIO TERMINAL DEVICE 有权
标题翻译： FUNKENDGERÄT
公开(公告)号：EP1083669A4
公开(公告)日：2003-09-03
申请号：EP99907913
申请日：1999-03-11
申请人： MITSUBISHI ELECTRIC CORP
发明人： KATSURA TAKATOSHI , ITOH KENJI , FUKUYAMA SHINJIROU , MOCHIZUKI MITSURU , NAGANO HIROAKI , MATSUNAMI YOSHINORI , SHIMOZAWA MITSUHIRO , ISHIZU FUMIO , HAYASHI RYOJI
IPC分类号： H03D3/00 , H03D7/02 , H04B1/30 , H04J13/00 , H04L25/06 , H04L27/14 , H04L27/22
CPC分类号： H04B1/0014 , H03D3/008 , H03D7/02 , H04B1/0032 , H04B1/0039 , H04B1/30 , H04L25/061
摘要： A cellular telephone comprises a direct conversion receiver circuit (14) using even-harmonic quadrature mixer (24), and high-pass filters (56, 58, 64, 66) for removing DC offset components before and behind variable-gain amplifiers (60, 62) in a baseband circuit (30). The DC components appearing in the even-harmonic quadrature mixer (24) is constant, while the DC components appearing in the variable-gain amplifiers (60, 62) change with time. Therefore, the cutoff frequency of the high-pass filters (64, 66) in the back stage is set higher than the cutoff frequency (fc1) of the high-pass filters (56, 58) in the front stage so that the transient response may be fast.
摘要翻译：蜂窝电话包括使用偶次谐波正交混频器（24）的直接变换接收器电路（14）和用于去除可变增益放大器（60）前后的DC偏移分量的高通滤波器（56,58,64,66），62）在基带电路（30）中。出现在偶次谐波正交混频器（24）中的DC分量是恒定的，而出现在可变增益放大器（60,62）中的DC分量随时间变化。因此，将后级的高通滤波器（64,66）的截止频率设定得比前级的高通滤波器（56,58）的截止频率（fc1）高，以使瞬态响应可能会很快。

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