公开(公告)号：US07310502B2

公开(公告)日：2007-12-18

申请号：US09879722

申请日：2001-06-12

申请人： Yasufumi Ichikawa

发明人： Yasufumi Ichikawa

IPC分类号： H01Q11/12

CPC分类号： H04W52/52 ,  H04W52/36

摘要： Radio communications apparatus according to the invention comprises a DAC, a variable power amplification unit including at least two variable power amplifiers, and variable power amplification control unit for controlling the variable power amplifiers. The variable power amplification control unit controls the variable power amplifiers in order to upgrade the accuracy of the apparatus and assures a smaller apparatus design.

摘要翻译： 根据本发明的无线电通信装置包括DAC，包括至少两个可变功率放大器的可变功率放大单元和用于控制可变功率放大器的可变功率放大控制单元。 可变功率放大控制单元控制可变功率放大器，以提高设备的精度并确保更小的设备设计。

公开(公告)号：US06847261B2

公开(公告)日：2005-01-25

申请号：US10822365

申请日：2004-04-12

申请人： Yasushi Iwata ,  Yasufumi Ichikawa

发明人： Yasushi Iwata ,  Yasufumi Ichikawa

IPC分类号： H03G5/16 ,  H03G3/20 ,  H03G3/30 ,  H04B1/18

CPC分类号： H03G3/3078 ,  H03G3/30 ,  H03G3/3052

摘要： A constant output signal can be achieved by controlling a gain variable amplifier 2 based on a level of an output signal which is derived by variably amplifying a receiving signal S1 (input signal). An AGC output signal S11 is detected by a detector circuit 3, then a detected voltage signal S7 is converted into a digital signal by an A/D converter 4 to output it to a CPU 5. Then, the CPU 5 generates a control signal S8 based on the detected voltage signal S7, then an A/D converter 6 converts the control signal S8 into the analogue signal, and then the signal is sent out to the gain variable amplifier 2 to execute gain control. At this time, an RSSI detector portion 9 detects an RSSI signal S10 corresponding to a transmitting signal level from the receiving signal S1, and then the CPU 5 sends out the control signal S8 stored at the time of preceding execution of the gain control when the RSSI signal S10 is reduced below a predetermined threshold value S12. In the weak received electric field strength, the control voltage for the gain variable amplifier is prevented reduction, and the proper automatic gain control can be made possible to thus achieve the good receiving characteristics.

摘要翻译： 可以通过基于通过可变地放大接收信号S1（输入信号）导出的输出信号的电平来控制增益可变放大器2来实现恒定输出信号。 由检测器电路3检测AGC输出信号S11，然后通过A / D转换器4将检测到的电压信号S7转换成数字信号，将其输出到CPU 5.然后，CPU 5产生控制信号S8 基于检测到的电压信号S7，则A / D转换器6将控制信号S8转换为模拟信号，然后将该信号发送到增益可变放大器2以执行增益控制。 此时，RSSI检测部9从接收信号S1检测与发送信号电平对应的RSSI信号S10，然后CPU 5发出在执行增益控制时存储的控制信号S8 RSSI信号S10被减小到低于预定阈值S12。 在弱的接收电场强度下，防止减小增益可变放大器的控制电压，并且可以实现适当的自动增益控制，从而实现良好的接收特性。

公开(公告)号：US06708025B2

公开(公告)日：2004-03-16

申请号：US09788214

申请日：2001-02-16

申请人： Yasushi Iwata ,  Yasufumi Ichikawa

发明人： Yasushi Iwata ,  Yasufumi Ichikawa

IPC分类号： H04B106

CPC分类号： H03G3/30

摘要： At the power-on, a determination section (9) outputs a switch control signal (m) to a selector switch (7) to select the output of a sweep signal generator (6) which generates a voltage sweep signal (h) that increases from the minimum value to the maximum value of the gain control voltage range (p) at the same time, then provides the voltage sweep signal (h) to the variable gain amplifier (1), and calculates the difference (f) between the level detection value of an output signal (c) and a convergence value (e) and detects a sweep voltage value (j) obtained when (f)=0 and stores the sweep voltage value (j) into memory. After the sweep operation, the sweep voltage value (j) stored in memory is provided as a gain control signal (b) to the variable gain amplifier (1). Then the primary automatic gain control via the closed loop control system is started.

摘要翻译： 在通电时，确定部分（9）将开关控制信号（m）输出到选择器开关（7），以选择产生增加的电压扫描信号（h）的扫描信号发生器（6）的输出 从增益控制电压范围（p）的最小值到最大值同时向可变增益放大器（1）提供电压扫描信号（h），并计算电平 输出信号（c）的检测值和收敛值（e），并且检测当（f）= 0时获得的扫描电压值（j）并将扫描电压值（j）存储到存储器中。 在扫描操作之后，将存储在存储器中的扫描电压值（j）作为增益控制信号（b）提供给可变增益放大器（1）。 然后开始通过闭环控制系统的主要自动增益控制。

公开(公告)号：US20180249477A1

公开(公告)日：2018-08-30

申请号：US15737994

申请日：2016-02-25

申请人： Sojiro NORITA ,  Osamu KATO ,  Hiroaki ASANO ,  Yasufumi ICHIKAWA ,  Noriyuki SHIMIZU

发明人： Sojiro NORITA ,  Osamu KATO ,  Hiroaki ASANO ,  Yasufumi ICHIKAWA ,  Noriyuki SHIMIZU

IPC分类号： H04W72/10 ,  H04W72/04 ,  H04W48/20 ,  H04W28/24 ,  H04W28/26

CPC分类号： H04W72/10 ,  H04W28/24 ,  H04W28/26 ,  H04W48/20 ,  H04W72/042

摘要： There is provided a wireless base station device capable of reducing a communication delay time related to communication of a priority call. A wireless base station device includes a processor a memory, and an antenna. The memory stores a wireless resource allocated to a priority call of radio channels for transmission of data with a wireless communication terminal before a priority call is generated under the control of the processor. The processor allocates the wireless resource stored in the memory to a generated priority call. The antenna performs communication of data of the priority call by using the allocated wireless resource.

公开(公告)号：US06675000B1

公开(公告)日：2004-01-06

申请号：US09468278

申请日：1999-12-20

申请人： Yasufumi Ichikawa

发明人： Yasufumi Ichikawa

IPC分类号： H01Q1112

CPC分类号： H03G3/3042

摘要： A radio communication apparatus is provided with a first variable power amplifier 13 and a second variable power amplifier 14 in a radio transmission unit 22, and also a variable amplifier 16 is provided at a prestage of a modulation unit 15. A transmission power control bit is extracted from a reception signal sent from a communication counter station by a variable power amplifying-controlling unit 18. The variable power amplifying-controlling unit 18 updates a value of transmission power stored in an own station based upon the value of this extracted transmission power control bit, and also compares the updated transmission value with a predetermined threshold value. Based upon this comparison result, the first and second variable power amplifier 13 and 14, and the variable amplifier 16 are controlled in either a serial control manner or a parallel control manner so as to perform a variable power amplification, so that the own transmission power is adjusted.

摘要翻译： 无线电通信装置在无线电发送单元22中设置有第一可变功率放大器13和第二可变功率放大器14，并且在调制单元15的预置位置设置可变放大器16.发送功率控制位是 从可变功率放大控制单元18从通信对方站发送的接收信号中提取。可变功率放大控制单元18基于提取的发送功率控制的值来更新存储在本站中的发送功率的值 并且还将更新的传输值与预定阈值进行比较。 基于该比较结果，第一可变功率放大器13和第二可变功率放大器14以及可变放大器16以串行控制方式或并行控制方式进行控制，以便执行可变功率放大，使得自身的发送功率 被调整。

公开(公告)号：US06577852B1

公开(公告)日：2003-06-10

申请号：US09610255

申请日：2000-07-05

申请人： Yasushi Iwata ,  Yasufumi Ichikawa

发明人： Yasushi Iwata ,  Yasufumi Ichikawa

IPC分类号： H04B106

CPC分类号： H03G3/3036 ,  H03G3/3052

摘要： When an input signal S11 is variable-gain-amplified by a variable gain amplifier 1 to obtain a predetermined output signal S12, a variable gain control signal S15 is generated by a detecting circuit 2, an A/D converter 3, an adder 4, and a converting unit 5. Both a latch circuit 6 and an adder 7 calculate a difference between a variable gain control signal generated during a preceding control operation and a present variable gain control signal. When the difference result is equal to “0”, a counter 8 counts predetermined stable condition continued time, and thereafter outputs a non-operation setting signal S16. Also, the counter 8 sends out the variable gain control signal generated during the preceding control operation to the variable gain amplifier 1 so as to set the detecting circuit 2, the A/D converter 3, the adder 4, and the converting unit 5 into non-operation conditions thereof.

摘要翻译： 当通过可变增益放大器1对输入信号S11进行可变增益放大以获得预定的输出信号S12时，由检测电路2，A / D转换器3，加法器4产生可变增益控制信号S15， 以及转换单元5.锁存电路6和加法器7都计算在前一控制操作期间产生的可变增益控制信号与当前可变增益控制信号之间的差。 当差分结果等于“0”时，计数器8对预定的稳定状态持续时间进行计数，然后输出非操作设置信号S16。 此外，计数器8将在先前控制操作期间产生的可变增益控制信号发送到可变增益放大器1，以将检测电路2，A / D转换器3，加法器4和转换单元5设置成 非操作条件。

公开(公告)号：US06597898B1

公开(公告)日：2003-07-22

申请号：US09479303

申请日：2000-01-06

申请人： Yasushi Iwata ,  Yasufumi Ichikawa

发明人： Yasushi Iwata ,  Yasufumi Ichikawa

IPC分类号： H04B106

CPC分类号： H03G3/3078 ,  H03G3/30 ,  H03G3/3052

摘要： A constant output signal can be achieved by controlling a gain variable amplifier 2 based on a level of an output signal which is derived by variably amplifying a receiving signal S1 (input signal). An AGC output signal S11 is detected by a detector circuit 3, then a detected voltage signal S7 is converted into a digital signal by an A/D converter 4 to output it to a CPU 5. Then, the CPU 5 generates a control signal S8 based on the detected voltage signal S7, then an A/D converter 6 converts the control signal S8 into the analogue signal, and then the signal is sent out to the gain variable amplifier 2 to execute gain control. At this time, an RSSI detector portion 9 detects an RSSI signal S10 corresponding to a transmitting signal level from the receiving signal S1, and then the CPU 5 sends out the control signal S8 stored at the time of preceding execution of the gain control when the RSSI signal S10 is reduced below a predetermined threshold value S12. In the weak received electric field strength, the control voltage for the gain variable amplifier is prevented reduction, and the proper automatic gain control can be made possible to thus achieve the good receiving characteristics.

摘要翻译： 可以通过基于通过可变地放大接收信号S1（输入信号）导出的输出信号的电平来控制增益可变放大器2来实现恒定输出信号。 由检测器电路3检测AGC输出信号S11，然后通过A / D转换器4将检测到的电压信号S7转换成数字信号，将其输出到CPU 5.然后，CPU 5产生控制信号S8 基于检测到的电压信号S7，则A / D转换器6将控制信号S8转换为模拟信号，然后将该信号发送到增益可变放大器2以执行增益控制。 此时，RSSI检测部9从接收信号S1检测与发送信号电平对应的RSSI信号S10，然后CPU 5发出在执行增益控制时存储的控制信号S8 RSSI信号S10被减小到低于预定阈值S12。 在弱的接收电场强度下，防止减小增益可变放大器的控制电压，并且可以实现适当的自动增益控制，从而实现良好的接收特性。

公开(公告)号：US06532357B1

公开(公告)日：2003-03-11

申请号：US09340309

申请日：1999-06-28

申请人： Yasufumi Ichikawa

发明人： Yasufumi Ichikawa

IPC分类号： H04B104

CPC分类号： H04W52/52 ,  H03G1/0088 ,  H03G3/3042

摘要： A radio communication device has a first variable power amplifier 19 and a second variable power amplifier 20 and performs gain control of the variable power amplifiers 19 and 20 by a variable power amplifier control section 27 for controlling transmission power of the radio communication device. At this time, the variable power amplifiers 19 and 20 are switched on and off under the control of a switch control section 25 in response to the theoretical value of transmission power updated based on the transmission power of the radio communication device detected by a transmission power detection section 24 or a transmission power control bit extracted by a base band signal processing section 16 for prolonging the time period over which the variable power amplifier 19 or 20 is off.

摘要翻译： 无线电通信装置具有第一可变功率放大器19和第二可变功率放大器20，并且通过用于控制无线电通信装置的发送功率的可变功率放大器控制部分27执行可变功率放大器19和20的增益控制。 此时，可变功率放大器19和20在开关控制部25的控制下，根据由发送功率检测到的无线通信装置的发送功率更新的发送功率的理论值来接通和断开 检测部分24或由基带信号处理部分16提取的用于延长可变功率放大器19或20关闭的时间段的发送功率控制位。

公开(公告)号：US20050153671A1

公开(公告)日：2005-07-14

申请号：US11057973

申请日：2005-02-15

申请人： Yasufumi Ichikawa

发明人： Yasufumi Ichikawa

IPC分类号： H03G3/30 ,  H04B1/04 ,  H04B1/3822 ,  H04B1/40 ,  H04B1/707 ,  H04B7/005 ,  H04B7/26 ,  H04J13/00 ,  H04W52/04 ,  H04W52/60 ,  H04B7/00

CPC分类号： H04W52/265 ,  H03G3/3042 ,  H04W52/08 ,  H04W52/20 ,  H04W52/267 ,  H04W52/36 ,  H04W52/367 ,  H04W52/60

摘要： A wireless communication apparatus includes a variable power amplifier (19) and a power amplifier (20). A variable power amplifier control unit (24) controls the gain of the variable power amplifier (19) for controlling transmission power of the own apparatus. At this time, a condition change detecting unit (28) detects changes in conditions of the own station and a counter station. Based upon the detected condition changes, a transmission power control bit controlling unit (26) and a transmission power control period controlling unit (27) change a control period of a transmission power control bit and a transmission power control range. This transmission power control bit is inserted into a transmission signal, then, the transmission signal is transmitted to the counter station. The condition changes are detected based upon reception power, transmission power, the transmission power control bit, a change amount of control conditions, and a change speed of the control conditions.

摘要翻译： 无线通信装置包括可变功率放大器（19）和功率放大器（20）。 可变功率放大器控制单元（24）控制用于控制本装置的发射功率的可变功率放大器（19）的增益。 此时，条件变化检测单元（28）检测本站和对方站的状态的变化。 发送功率控制位控制单元（26）和发送功率控制周期控制单元（27）基于检测到的条件变化，改变发送功率控制位的控制周期和发送功率控制范围。 将该发送功率控制位插入到发送信号中，然后将发送信号发送到对方站。 根据接收功率，发送功率，发送功率控制位，控制条件的变化量，控制条件的变化速度来检测状况变化。

公开(公告)号：US06745016B2

公开(公告)日：2004-06-01

申请号：US10357744

申请日：2003-02-04

申请人： Yasushi Iwata ,  Yasufumi Ichikawa

发明人： Yasushi Iwata ,  Yasufumi Ichikawa

IPC分类号： H04B106

CPC分类号： H03G3/3078 ,  H03G3/30 ,  H03G3/3052

摘要： A constant output signal can be achieved by controlling a gain variable amplifier 2 based on a level of an output signal which is derived by variably amplifying a receiving signal S1 (input signal). An AGC output signal S11 is detected by a detector circuit 3. Then, a CPU 5 generates a control signal S8 based on a detected voltage signal S7. An RSSI detector portion 9 detects an RSSI signal S10 corresponding to a transmitting signal level from the receiving signal S1. The transmitting signal level is compared to a preceding transmitting signal level. The control signal from a preceding execution of the gain control is output if the present control signal is lower than the preceding control signal and the present transmitting signal level is reduced below the preceding transmitting signal level.

摘要翻译： 可以通过基于通过可变地放大接收信号S1（输入信号）导出的输出信号的电平来控制增益可变放大器2来实现恒定输出信号。 AGC输出信号S11由检测器电路3检测。然后，CPU 5基于检测到的电压信号S7产生控制信号S8。 RSSI检测部9从接收信号S1检测与发送信号电平对应的RSSI信号S10。 将发送信号电平与先前的发送信号电平进行比较。 如果当前控制信号低于先前控制信号并且当前发送信号电平降低到先前发送信号电平以下，则输出来自执行增益控制的控制信号。