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公开(公告)号：US07095806B2
公开(公告)日：2006-08-22
申请号：US10773218
申请日：2004-02-09
IPC分类号： H04N5/76
CPC分类号： H04B1/0014 , H04B1/0007 , H04B1/0039 , H04B1/28
摘要： An orthogonal demodulating section converts the frequency of received signals to the lower range after rejecting an image band thereof by an RE filter. An image rejecting section rejects the image band of the orthogonally converted output. It allows enough of an image rejecting degree to be obtained. An A/D converter section converts the whole range into a digital signal and an orthogonal demodulating section demodulates a desirable channel by means of digital processing. Then, a channel selecting section selects and outputs the desirable channel.
摘要翻译： 正交解调部通过RE滤波器将接收信号的频率抑制在其图像频带之后，将其接收信号的频率转换为较低范围。 图像拒绝部分拒绝正交转换输出的图像带。 它允许获得足够的图像拒绝度。 A / D转换器部分将整个范围转换为数字信号，并且正交解调部分通过数字处理解调期望的信道。 然后，频道选择部分选择并输出所需频道。
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公开(公告)号：US06714604B1
公开(公告)日：2004-03-30
申请号：US09604838
申请日：2000-06-27
IPC分类号： H04B126
CPC分类号： H04B1/0014 , H04B1/0007 , H04B1/0039 , H04B1/28
摘要： An orthogonal demodulating section converts the frequency of received signals to the lower range in batch after rejecting an image band thereof by an RF filter. An image rejecting section rejects the image band of the orthogonally converted output. It allows an enough image rejecting degree to be obtained. An A/D converter section converts the whole range into a digital signal and an orthogonal demodulating section demodulates a desirable channel by means of digital processing. Then, a channel selecting section selects and outputs the desirable channel. It then allows wide-bands to be received in batch, flexible processing to be achieved by the digital processing and an enough image rejecting degree to be obtained.
摘要翻译： 正交解调部在通过RF滤波器拒绝其图像频带之后，将接收信号的频率分批转换为较低范围。 图像拒绝部分拒绝正交转换输出的图像带。 它允许获得足够的图像拒绝度。 A / D转换器部分将整个范围转换为数字信号，并且正交解调部分通过数字处理解调期望的信道。 然后，频道选择部分选择并输出所需频道。 然后允许批量接收宽带，通过数字处理实现灵活处理，并获得足够的图像拒绝度。
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公开(公告)号：US06339711B1
公开(公告)日：2002-01-15
申请号：US09039464
申请日：1998-03-16
申请人： Shoji Otaka , Hiroshi Tsurumi , Hiroshi Yoshida , Syuichi Sekine , Hiroyuki Kayano , Tadahiko Maeda
发明人： Shoji Otaka , Hiroshi Tsurumi , Hiroshi Yoshida , Syuichi Sekine , Hiroyuki Kayano , Tadahiko Maeda
IPC分类号： H04B138
CPC分类号： H03D3/008 , H03F1/30 , H03F3/189 , H03F2200/294 , H03F2200/372 , H03F2200/504 , H03G3/3042 , H03L7/107 , H04B1/18 , H04B1/28 , H04B1/30 , H04B1/403 , H04B1/405
摘要： In a radio apparatus, the band of a loop filter of a synthesizer in a blank channel searching state is narrower than the band in a communicating state. In addition, a radio wave environment is measured. A characteristic necessary for the radio apparatus is determined corresponding to the measured radio wave environment. The power is controlled corresponding to the performance of the radio apparatus. Thus, the power consumption is decreased. In addition, the efficiency of the output power is improved. In the radio apparatus, the current consumption of a power amplifier PA is measured. A matching circuit (LNA or MIX) of the antenna is adjusted with the measured result so as to decrease an antenna loss. In the radio apparatus, a DC offset is removed from the transmitted power and the reflected wave. When the DC offset is removed using an AC coupling capacitor, the deterioration of the frequency characteristic of the receiving portion is compensated with a capacitor in a digital signal process. In the radio apparatus, a transmission power detecting portion is structured as an IC chip. The transmission power detecting portion detects the transmission power corresponding to leakage currents in the power supply of the IC chip and the ground. Thus, when the power is detected, a power loss is suppressed. Consequently, the power consumption of the radio apparatus can be decreased.
摘要翻译： 在无线电设备中，空白信道搜索状态的合成器的环路滤波器的频带比通信状态的频带窄。 另外，测量无线电波环境。 根据测得的无线电波环境确定无线电设备所必需的特性。 根据无线电设备的性能来控制功率。 因此，功耗降低。 此外，输出功率的效率提高。 在无线电设备中，测量功率放大器PA的电流消耗。 利用测量结果调整天线的匹配电路（LNA或MIX），以减少天线损耗。 在无线电设备中，从发射功率和反射波中去除DC偏移。 当使用AC耦合电容器去除DC偏移时，在数字信号处理中用电容器补偿接收部分的频率特性的劣化。 在无线电设备中，传输功率检测部分被构造为IC芯片。 发送功率检测部分检测与IC芯片和地面的电源中的泄漏电流相对应的发送功率。 因此，当检测到电力时，功率损失被抑制。 因此，可以减少无线电设备的功耗。
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公开(公告)号：US20050042994A1
公开(公告)日：2005-02-24
申请号：US10957624
申请日：2004-10-05
申请人： Shoji Otaka , Hiroshi Tsurumi , Hiroshi Yoshida , Syuichi Sekine , Hiroyuki Kayano , Tadahiko Maeda
发明人： Shoji Otaka , Hiroshi Tsurumi , Hiroshi Yoshida , Syuichi Sekine , Hiroyuki Kayano , Tadahiko Maeda
IPC分类号： H03J7/18 , H03L7/08 , H03L7/093 , H03L7/107 , H04B1/18 , H04B1/26 , H04B1/30 , H04B1/40 , H04B1/38
CPC分类号： H03D3/008 , H03F1/30 , H03F3/189 , H03F2200/294 , H03F2200/372 , H03F2200/504 , H03G3/3042 , H03L7/107 , H04B1/18 , H04B1/28 , H04B1/30 , H04B1/403 , H04B1/405
摘要： In a radio apparatus, the band of a loop filter of a synthesizer in a blank channel searching state is narrower than the band in a communicating state. In addition, a radio wave environment is measured. A characteristic necessary for the radio apparatus is determined corresponding to the measured-radio wave environment. The power is controlled corresponding to the performance of the radio apparatus. Thus, the power consumption is decreased. In addition, the efficiency of the output power is improved. In the radio apparatus, the current consumption of a power amplifier PA is measured. A matching circuit (LNA or MIX) of the antenna is adjusted with the measured result so as to decrease an antenna loss. In the radio apparatus, a DC offset is removed from the transmitted power and the reflected wave. When the DC offset is removed using an AC coupling capacitor, the deterioration of the frequency characteristic of the receiving portion is compensated with a capacitor in a digital signal process. In the radio apparatus, a transmission power detecting portion is structured as an IC chip. The transmission power detecting portion detects the transmission power corresponding to leakage currents in the power supply of the IC chip and the ground. Thus, when the power is detected, a power loss is suppressed. Consequently, the power consumption of the radio apparatus can be decreased.
摘要翻译： 在无线电设备中，空白信道搜索状态的合成器的环路滤波器的频带比通信状态的频带窄。 另外，测量无线电波环境。 根据测量的无线电波环境确定无线电设备所需的特性。 根据无线电设备的性能来控制功率。 因此，功耗降低。 此外，输出功率的效率提高。 在无线电设备中，测量功率放大器PA的电流消耗。 利用测量结果调整天线的匹配电路（LNA或MIX），以减少天线损耗。 在无线电设备中，从发射功率和反射波中去除DC偏移。 当使用AC耦合电容器去除DC偏移时，在数字信号处理中用电容器补偿接收部分的频率特性的劣化。 在无线电设备中，传输功率检测部分被构造为IC芯片。 发送功率检测部分检测与IC芯片和地面的电源中的泄漏电流相对应的发送功率。 因此，当检测到电力时，功率损失被抑制。 因此，可以减少无线电设备的功耗。
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公开(公告)号：US07590400B2
公开(公告)日：2009-09-15
申请号：US11621148
申请日：2007-01-09
申请人： Shoji Otaka , Hiroshi Tsurumi , Hiroshi Yoshida , Syuichi Sekine , Hiroyuki Kayano , Tadahiko Maeda
发明人： Shoji Otaka , Hiroshi Tsurumi , Hiroshi Yoshida , Syuichi Sekine , Hiroyuki Kayano , Tadahiko Maeda
IPC分类号： H04B1/10
CPC分类号： H03D3/008 , H03F1/30 , H03F3/189 , H03F2200/294 , H03F2200/372 , H03F2200/504 , H03G3/3042 , H03L7/107 , H04B1/18 , H04B1/28 , H04B1/30 , H04B1/403 , H04B1/405
摘要： In a radio apparatus, the band of a loop filter of a synthesizer in a blank channel searching state is narrower than the band in a communicating state. In addition, a radio wave environment is measured. A characteristic necessary for the radio apparatus is determined corresponding to the measured-radio wave environment. The power is controlled corresponding to the performance of the radio apparatus. Thus, the power consumption is decreased. In addition, the efficiency of the output power is improved. In the radio apparatus, the current consumption of a power amplifier PA is measured. A matching circuit (LNA or MIX) of the antenna is adjusted with the measured result so as to decrease an antenna loss. In the radio apparatus, a DC offset is removed from the transmitted power and the reflected wave. When the DC offset is removed using an AC coupling capacitor, the deterioration of the frequency characteristic of the receiving portion is compensated with a capacitor in a digital signal process. In the radio apparatus, a transmission power detecting portion is structured as an IC chip. The transmission power detecting portion detects the transmission power corresponding to leakage currents in the power supply of the IC chip and the ground. Thus, when the power is detected, a power loss is suppressed. Consequently, the power consumption of the radio apparatus can be decreased.
摘要翻译： 在无线电设备中，空白信道搜索状态的合成器的环路滤波器的频带比通信状态的频带窄。 另外，测量无线电波环境。 根据测量的无线电波环境确定无线电设备所需的特性。 根据无线电设备的性能来控制功率。 因此，功耗降低。 此外，输出功率的效率提高。 在无线电设备中，测量功率放大器PA的电流消耗。 利用测量结果调整天线的匹配电路（LNA或MIX），以减少天线损耗。 在无线电设备中，从发射功率和反射波中去除DC偏移。 当使用AC耦合电容器去除DC偏移时，在数字信号处理中用电容器补偿接收部分的频率特性的劣化。 在无线电设备中，传输功率检测部分被构造为IC芯片。 发送功率检测部分检测与IC芯片和地面的电源中的泄漏电流相对应的发送功率。 因此，当检测到电力时，功率损失被抑制。 因此，可以减少无线电设备的功耗。
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公开(公告)号：US07184738B2
公开(公告)日：2007-02-27
申请号：US10957624
申请日：2004-10-05
申请人： Shoji Otaka , Hiroshi Tsurumi , Hiroshi Yoshida , Syuichi Sekine , Hiroyuki Kayano , Tadahiko Maeda
发明人： Shoji Otaka , Hiroshi Tsurumi , Hiroshi Yoshida , Syuichi Sekine , Hiroyuki Kayano , Tadahiko Maeda
CPC分类号： H03D3/008 , H03F1/30 , H03F3/189 , H03F2200/294 , H03F2200/372 , H03F2200/504 , H03G3/3042 , H03L7/107 , H04B1/18 , H04B1/28 , H04B1/30 , H04B1/403 , H04B1/405
摘要： In a radio apparatus, the band of a loop filter of a synthesizer in a blank channel searching state is narrower than the band in a communicating state. In addition, a radio wave environment is measured. A characteristic necessary for the radio apparatus is determined corresponding to the measured-radio wave environment. The power is controlled corresponding to the performance of the radio apparatus. Thus, the power consumption is decreased. In addition, the efficiency of the output power is improved. In the radio apparatus, the current consumption of a power amplifier PA is measured. A matching circuit (LNA or MIX) of the antenna is adjusted with the measured result so as to decrease an antenna loss. In the radio apparatus, a DC offset is removed from the transmitted power and the reflected wave. When the DC offset is removed using an AC coupling capacitor, the deterioration of the frequency characteristic of the receiving portion is compensated with a capacitor in a digital signal process. In the radio apparatus, a transmission power detecting portion is structured as an IC chip. The transmission power detecting portion detects the transmission power corresponding to leakage currents in the power supply of the IC chip and the ground. Thus, when the power is detected, a power loss is suppressed. Consequently, the power consumption of the radio apparatus can be decreased.
摘要翻译： 在无线电设备中，空白信道搜索状态的合成器的环路滤波器的频带比通信状态的频带窄。 另外，测量无线电波环境。 根据测量的无线电波环境确定无线电设备所需的特性。 根据无线电设备的性能来控制功率。 因此，功耗降低。 此外，输出功率的效率提高。 在无线电设备中，测量功率放大器PA的电流消耗。 利用测量结果调整天线的匹配电路（LNA或MIX），以减少天线损耗。 在无线电设备中，从发射功率和反射波中去除DC偏移。 当使用AC耦合电容器去除DC偏移时，在数字信号处理中用电容器补偿接收部分的频率特性的劣化。 在无线电设备中，传输功率检测部分被构造为IC芯片。 发送功率检测部分检测与IC芯片和地面的电源中的泄漏电流相对应的发送功率。 因此，当检测到电力时，功率损失被抑制。 因此，可以减少无线电设备的功耗。
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公开(公告)号：US06816712B2
公开(公告)日：2004-11-09
申请号：US09990301
申请日：2001-11-23
申请人： Shoji Otaka , Hiroshi Tsurumi , Hiroshi Yoshida , Syuichi Sekine , Hiroyuki Kayano , Tadahiko Maeda
发明人： Shoji Otaka , Hiroshi Tsurumi , Hiroshi Yoshida , Syuichi Sekine , Hiroyuki Kayano , Tadahiko Maeda
IPC分类号： H04B144
CPC分类号： H03D3/008 , H03F1/30 , H03F3/189 , H03F2200/294 , H03F2200/372 , H03F2200/504 , H03G3/3042 , H03L7/107 , H04B1/18 , H04B1/28 , H04B1/30 , H04B1/403 , H04B1/405
摘要： In a radio apparatus, the band of a loop filter of a synthesizer in a blank channel searching state is narrower than the band in a communicating state. In addition, a radio wave environment is measured. A characteristic necessary for the radio apparatus is determined corresponding to the measured radio wave environment. The power is controlled corresponding to the performance of the radio apparatus. Thus, the power consumption is decreased. In addition, the efficiency of the output power is improved. In the radio apparatus, the current consumption of a power amplifier PA is measured. A matching circuit (LNA or MIX) of the antenna is adjusted with the measured result so as to decrease an antenna loss. In the radio apparatus, a DC offset is removed from the transmitted power and the reflected wave. When the DC offset is removed using an AC coupling capacitor, the deterioration of the frequency characteristic of the receiving portion is compensated with a capacitor in a digital signal process. In the radio apparatus, a transmission power detecting portion is structured as an IC chip. The transmission power detecting portion detects the transmission power corresponding to leakage currents in the power supply of the IC chip and the ground. Thus, when the power is detected, a power loss is suppressed. Consequently, the power consumption of the radio apparatus can be decreased.
摘要翻译： 在无线电设备中，空白信道搜索状态的合成器的环路滤波器的频带比通信状态的频带窄。 另外，测量无线电波环境。 根据测得的无线电波环境确定无线电设备所必需的特性。 根据无线电设备的性能来控制功率。 因此，功耗降低。 此外，输出功率的效率提高。 在无线电设备中，测量功率放大器PA的电流消耗。 利用测量结果调整天线的匹配电路（LNA或MIX），以减少天线损耗。 在无线电设备中，从发射功率和反射波中去除DC偏移。 当使用AC耦合电容器去除DC偏移时，在数字信号处理中用电容器补偿接收部分的频率特性的劣化。 在无线电设备中，传输功率检测部分被构造为IC芯片。 发送功率检测部分检测与IC芯片和地面的电源中的泄漏电流相对应的发送功率。 因此，当检测到电力时，功率损失被抑制。 因此，可以减少无线电设备的功耗。
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公开(公告)号：US20070111673A1
公开(公告)日：2007-05-17
申请号：US11621148
申请日：2007-01-09
申请人： Shoji OTAKA , Hiroshi Tsurumi , Hiroshi Yoshida , Syuichi Sekine , Hiroyuki Kayano , Tadahiko Maeda
发明人： Shoji OTAKA , Hiroshi Tsurumi , Hiroshi Yoshida , Syuichi Sekine , Hiroyuki Kayano , Tadahiko Maeda
CPC分类号： H03D3/008 , H03F1/30 , H03F3/189 , H03F2200/294 , H03F2200/372 , H03F2200/504 , H03G3/3042 , H03L7/107 , H04B1/18 , H04B1/28 , H04B1/30 , H04B1/403 , H04B1/405
摘要： In a radio apparatus, the band of a loop filter of a synthesizer in a blank channel searching state is narrower than the band in a communicating state. In addition, a radio wave environment is measured. A characteristic necessary for the radio apparatus is determined corresponding to the measured-radio wave environment. The power is controlled corresponding to the performance of the radio apparatus. Thus, the power consumption is decreased. In addition, the efficiency of the output power is improved. In the radio apparatus, the current consumption of a power amplifier PA is measured. A matching circuit (LNA or MIX) of the antenna is adjusted with the measured result so as to decrease an antenna loss. In the radio apparatus, a DC offset is removed from the transmitted power and the reflected wave. When the DC offset is removed using an AC coupling capacitor, the deterioration of the frequency characteristic of the receiving portion is compensated with a capacitor in a digital signal process. In the radio apparatus, a transmission power detecting portion is structured as an IC chip. The transmission power detecting portion detects the transmission power corresponding to leakage currents in the power supply of the IC chip and the ground. Thus, when the power is detected, a power loss is suppressed. Consequently, the power consumption of the radio apparatus can be decreased.
摘要翻译： 在无线电设备中，空白信道搜索状态的合成器的环路滤波器的频带比通信状态的频带窄。 另外，测量无线电波环境。 根据测量的无线电波环境确定无线电设备所需的特性。 根据无线电设备的性能来控制功率。 因此，功耗降低。 此外，输出功率的效率提高。 在无线电设备中，测量功率放大器PA的电流消耗。 利用测量结果调整天线的匹配电路（LNA或MIX），以减少天线损耗。 在无线电设备中，从发射功率和反射波中去除DC偏移。 当使用AC耦合电容器去除DC偏移时，在数字信号处理中用电容器补偿接收部分的频率特性的劣化。 在无线电设备中，传输功率检测部分被构造为IC芯片。 发送功率检测部分检测与IC芯片和地面的电源中的泄漏电流相对应的发送功率。 因此，当检测到电力时，功率损失被抑制。 因此，可以减少无线电设备的功耗。
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9.发明授权Receiver having DC offset decreasing function and communication system using the same 失效具有DC偏移减小功能的接收机和使用该功能的通信系统公开(公告)号：US06498929B1
公开(公告)日：2002-12-24
申请号：US08880679
申请日：1997-06-23
申请人： Hiroshi Tsurumi , Hiroshi Yoshida , Tetsuro Itakura , Takafumi Yamaji , Akira Yasuda , Takashi Ueno , Hiroshi Tanimoto , Ryuichi Fujimoto , Hiroshi Horiguchi
发明人： Hiroshi Tsurumi , Hiroshi Yoshida , Tetsuro Itakura , Takafumi Yamaji , Akira Yasuda , Takashi Ueno , Hiroshi Tanimoto , Ryuichi Fujimoto , Hiroshi Horiguchi
IPC分类号： H04B716
CPC分类号： H03D3/008 , H03G3/3052 , H04B1/30
摘要： A receiver having a function of a direct current offset, and including a receiving section for receiving a radio frequency signal, an analog signal processing section for amplifying, band-converting and frequency-converting an analog signal inputted from the receiving section, and an AD converting section for converting an output of the analog signal processing section from an analog signal to a digital signal. Also included is a digital signal processing section for processing the digital signal converted by the DC converting section. The receiver further includes an offset detecting element, provided in the digital signal processing section, for detecting a direct current offset signal produced in the receiving section or a frequency converting section, an offset holding element, provided in the digital signal processing section, for holding the direct current offset signal detected by the offset detecting element, a DA converting section for converting the direct current offset signal detected by the digital signal processing section into an analog signal, and a first offset correcting element, provided in the analog signal processing section, for correcting the analog signal on the basis of the direct current offset signal converted by the DA converting section into the analog signal.
摘要翻译： 具有直流偏移功能的接收机，包括用于接收射频信号的接收部分，用于放大从接收部分输入的模拟信号的频带转换和频率转换的模拟信号处理部分，以及AD 转换部分，用于将模拟信号处理部分的输出从模拟信号转换成数字信号。 还包括用于处理由DC转换部分转换的数字信号的数字信号处理部分。 接收机还包括偏移检测元件，设置在数字信号处理部分中，用于检测在数字信号处理部分中设置的接收部分或频率转换部分产生的直流偏移信号，偏移保持元件，用于保持 由偏移检测元件检测的直流偏移信号，用于将由数字信号处理部分检测的直流偏移信号转换为模拟信号的DA转换部分和设置在模拟信号处理部分中的第一偏移校正元件， 用于基于由DA转换部分转换成的模拟信号的直流偏移信号来校正模拟信号。
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10.发明授权
公开(公告)号：US5742189A
公开(公告)日：1998-04-21
申请号：US528008
申请日：1995-09-14
申请人： Hiroshi Yoshida , Miyuki Ogura , Koji Iino , Shoji Otaka
发明人： Hiroshi Yoshida , Miyuki Ogura , Koji Iino , Shoji Otaka
CPC分类号： H04B1/0017 , H03D7/161 , H04B1/0003 , H04B1/001 , H04B1/26
摘要： A frequency conversion apparatus comprising a sampling circuit for receiving a first intermediate frequency signal extracted from an input signal and having a predetermined intermediate frequency and a predetermined band width and sampling the first intermediate frequency signal in accordance with a predetermined sampling frequency signal, to output a second intermediate frequency signal, and a sampling signal generator for outputting the sampling frequency signal to the sampling circuit, the sampling frequency signal having a frequency determined so that an integer multiple of not less than three times the sampling frequency is outside a frequency range of the input signal.
摘要翻译： 一种频率转换装置，包括：采样电路，用于接收从输入信号提取的具有预定中频和预定带宽的第一中频信号，并根据预定采样频率信号对第一中频信号进行采样，以输出 第二中频信号和用于将采样频率信号输出到采样电路的采样信号发生器，所述采样频率信号的频率被确定为使得采样频率不小于三倍的整数倍在该频率范围之外 输入信号。
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