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    • 3. 发明公开
    • DETECTOR CIRCUIT
    • 探测器电路
    • EP3211439A1
    • 2017-08-30
    • EP17163021.3
    • 2009-08-17
    • Telefonaktiebolaget LM Ericsson (publ)
    • ARNBORG, Torkel
    • G01R21/10G01R19/04H04B17/327G01R17/16
    • H04B17/327G01R17/16G01R21/10
    • A detector circuit, comprising a bridge circuit (100) is disclosed. The bridge circuit (100) comprises a first transistor (T101) connected between a first input terminal (V IN+ ) and a first terminal of the bridge output, a second transistor (T102) connected between a second input terminal (V IN- ) and the first terminal of the bridge output, a third transistor (T103) connected between the first input terminal (V IN+ ) and the second terminal of the bridge output, and a fourth transistor (T104) connected between the second input terminal (V IN- ) and the first terminal of the bridge output. The gate (G101) of the first transistor (T101) and the gate (G104) of the fourth transistor (T104) are connected to the first input terminal (V IN+ ). The gate (G102) of the second transistor (T102) and the gate (G103) of the third transistor (T103) are connected to the second input terminal (V IN- ). An alternative where the gates are AC coupled to the respective input terminals, by additional capacitors, is disclosed as well.
    • 公开了一种包括桥电路(100)的检测器电路。 桥电路(100)包括连接在第一输入端(VIN +)和桥输出的第一端之间的第一晶体管(T101),连接在第二输入端(VIN-)和第一输入端 第一输入端(VIN +)和桥输出端的第二端之间连接的第三晶体管(T103),以及连接在第二输入端(VIN-)和第一输入端 桥输出端。 第一晶体管(T101)的栅极(G101)和第四晶体管(T104)的栅极(G104)连接到第一输入端子(VIN +)。 第二晶体管(T102)的栅极(G102)和第三晶体管(T103)的栅极(G103)连接到第二输入端子(VIN-)。 还公开了通过附加电容器将栅极AC耦合到相应输入端子的替代方案。
    • 8. 发明公开
    • Mobile station having drift-free pulsed power detection method and apparatus
    • 在bepulster和无漂移检测的功率的移动站的方法和装置
    • EP0843420A3
    • 2000-11-02
    • EP97309212.5
    • 1997-11-14
    • NOKIA MOBILE PHONES LTD.
    • Liimatainen, Jukka
    • H04B7/005H03G3/20G01R21/10
    • H03G3/3047G01R21/10
    • In accordance with a method of this invention, and circuitry for performing the method, there is disclosed a process for operating a radio frequency (RF) signal power detector. The method includes the steps of (a) sampling the output of an RF detector circuit to obtain a measurement of a value of the output when no RF signal is input to the RF detector circuit; (b) storing the measurement; and (c) subtracting, when an RF signal is input to the RF detector circuit, the stored measurement from the output of the RF detector circuit to provide a subtracted output signal. In pulsed (e.g., TDMA) embodiments of this invention the step of sampling occurs between RF bursts, while in continuous wave (cw) embodiments the step of sampling occurs during a time that an RF connection is opened or otherwise blocked at an input of the RF detector circuit and a source of the RF signal. A sample and hold function can be provided for sampling and holding the subtracted output signal during a time that the input of the RF detector circuit is blocked. The step of subtracting includes the steps of combining the measured value with a transmitter power setting signal to obtain a corrected transmitter power setting signal; and subtracting the output of the RF detector circuit, when the RF signal is input to the RF detector circuit, from the corrected transmitter power setting signal.