公开(公告)号：US20160072434A1

公开(公告)日：2016-03-10

申请号：US14846601

申请日：2015-09-04

Applicant: HITACHI, LTD.

Inventor： Yusuke WACHI ,  Ichiro SOMADA ,  Takao OKAZAKI

IPC: H03B5/12

CPC classification number: H03B5/24

Abstract: Provided is an amplifier with a test oscillator for a high frequency characteristic monitor, which has small power loss in a normal operation state and secures good noise performance while it is possible to equip both a transmitter IC and a receiver IC with the amplifier. In a high frequency IC including an amplifier including an inductive load and a test oscillator arranged in a same chip, the test oscillator commonly uses the inductive load of the amplifier, the amplifier has a bias voltage terminal to switch an operation state into an active state/inactive state, and the oscillator has a bias voltage terminal to switch an operation state into an active state/inactive state. In a test operation mode, the amplifier is inactivated and the test oscillator is activated and in a normal operation mode, the amplifier is activated and the test oscillator is inactivated.

Abstract translation: 提供了一种具有用于高频特性监测器的测试振荡器的放大器，其在正常操作状态下具有小的功率损耗并且确保良好的噪声性能，同时可以将发射器IC和接收器IC与放大器配合。 在包括具有感应负载的放大器和布置在同一芯片中的测试振荡器的高频IC中，测试振荡器通常使用放大器的感性负载，放大器具有偏置电压端子，以将操作状态切换到活动状态 /非活动状态，并且振荡器具有偏置电压端子，以将操作状态切换到活动状态/非活动状态。 在测试操作模式下，放大器失效，测试振荡器被激活，在正常工作模式下，放大器被激活，测试振荡器失效。

公开(公告)号：US20170019070A1

公开(公告)日：2017-01-19

申请号：US15185685

申请日：2016-06-17

Applicant: Hitachi, Ltd.

Inventor： Yusuke TAKADA ,  Mitsugu KUSUNOKI ,  Takao OKAZAKI ,  Takashi MATSUMOTO ,  Kenta MOCHIDUKI

IPC: H03F1/02 ,  G01S7/03 ,  H03F3/19

CPC classification number: H03F1/0233 ,  G01S7/03 ,  H03F1/302 ,  H03F1/304 ,  H03F3/19 ,  H03F3/195 ,  H03F3/245 ,  H03F3/45179 ,  H03F2200/09 ,  H03F2200/393 ,  H03F2200/411 ,  H03F2200/447 ,  H03F2200/451 ,  H03F2200/465 ,  H03F2200/541 ,  H03F2203/45394 ,  H03G3/3042 ,  H04B17/0085 ,  H04B17/13 ,  H04W52/52

Abstract: A power controllable wireless communication device includes a variable gain amplifier having a gain that can be controlled based on a gain control signal, a reference power generation circuit, which generates first reference power and second reference power differing from the first reference power, a sensor circuit supplied with selectively power of a high frequency signal output from the variable gain amplifier, and the first reference power and the second reference power generated by the reference power generation circuit, and a control circuit which generates the gain control signal based on a sensor output from the sensor circuit. When controlling power, the control circuit generates the gain control signal based on ratios among a first sensor output corresponding to the first reference power, a second sensor output corresponding to the second reference power, and a high frequency sensor output corresponding to the power of the high frequency signal.

Abstract translation: 功率可控无线通信设备包括具有可以基于增益控制信号控制的增益的可变增益放大器，产生与第一参考功率不同的第一参考功率和第二参考功率的参考功率产生电路，传感器电路 提供选择性地从可变增益放大器输出的高频信号的功率，以及由参考发电电路产生的第一参考功率和第二参考功率;以及控制电路，其基于从 传感器电路。 当控制电力时，控制电路基于与第一参考功率相对应的第一传感器输出与对应于第二参考功率的第二传感器输出和对应于第二参考功率的第二传感器输出与对应于第二参考功率的功率的高频传感器输出 高频信号。