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    • 1. 发明申请
    • MODULE FOR MOBILE COMMUNICATION TERMINAL, AND MOBILE COMMUNICATION TERMINAL
    • 移动通信终端模块和移动通信终端
    • US20120094617A1
    • 2012-04-19
    • US13221937
    • 2011-08-31
    • Masazumi ToneAkio YamamotoTakashi ShibaOsamu Hikino
    • Masazumi ToneAkio YamamotoTakashi ShibaOsamu Hikino
    • H04B1/44
    • H04B1/0057H04B1/525
    • A tunable filter in a tunable DPX module has frequency characteristics, and thus needs to be controlled with high accuracy so as to simultaneously cancel a transmission signal and noise in a reception band on a transmission side. For this reason, a canceller includes a filter having the same frequency characteristic as that of a tunable filter, and a structure having functions of compensating for an amplitude, a phase, and a delay. And, two lines of the cancellers are used to individually cancel a leak component of a transmission signal and a leak component of thermal noise in a reception band. In order to save the power consumption of the amplifier, a coupler is loosely coupled, and a combiner is tightly coupled. Further, in order to suppress the influence on a reception system due to the tough coupling, the combiner uses the amplifier for in-phase inputs.
    • 可调DPX模块中的可调滤波器具有频率特性,因此需要高精度地控制,以便同时消除发送侧的接收频带中的发送信号和噪声。 因此,消除器包括具有与可调谐滤波器相同的频率特性的滤波器,以及具有补偿振幅,相位和延迟的功能的结构。 并且,使用两行消除器单独地消除接收频带中的发送信号的泄漏分量和热噪声的泄漏分量。 为了节省放大器的功耗,耦合器松耦合,组合器紧密耦合。 此外,为了抑制由于强耦合对接收系统的影响,组合器使用用于同相输入的放大器。
    • 4. 发明申请
    • MODULE FOR MOBILE COMMUNICATION TERMINAL AND MOBILE COMMUNICATION TERMINAL
    • 移动通信终端和移动通信终端模块
    • US20120163245A1
    • 2012-06-28
    • US13296286
    • 2011-11-15
    • Masazumi ToneAkio YamamotoTakashi ShibaOsamu Hikino
    • Masazumi ToneAkio YamamotoTakashi ShibaOsamu Hikino
    • H04L5/14
    • H04B1/525
    • A tunable filter has an out-of-band signal suppression amount of 30 dB that is smaller than 50 dB, the suppression amount of a typical duplexer. Thus, a canceller having a suppression amount of about 20 dB is necessary (particularly, a method is provided to obtain a suppression amount over a wide band without being adversely affected by the group delay characteristics and frequency characteristics of an amplifier included in a canceller). Delay devices corresponding to the group delay of the amplifier are disposed on the signal path of the tunable filter. The canceller includes a matching circuit that adjusts an amplitude, a phase, and a delay, a wide-band amplifier that has small amplitude fluctuations and small phase fluctuations over the frequency bands of a transmission signal and a reception signal, a variable-impedance transmission coupler, and a variable-impedance reception coupler.
    • 可调滤波器具有小于50dB的30dB的带外信号抑制量,典型双工器的抑制量。 因此,需要具有大约20dB的抑制量的消除器(特别地,提供一种方法来获得宽带上的抑制量而不受包括在消除器中的放大器的群延迟特性和频率特性的不利影响) 。 对应于放大器的组延迟的延迟器件设置在可调谐滤波器的信号路径上。 消除器包括调整幅度,相位和延迟的匹配电路,在发射信号和接收信号的频带上具有小幅度波动和小相位波动的宽带放大器,可变阻抗传输 耦合器和可变阻抗接收耦合器。
    • 6. 发明申请
    • MOBILE COMMUNICATION TERMINAL MODULE AND MOBILE COMMUNICATION TERMINAL
    • 移动通信终端模块和移动通信终端
    • US20130242809A1
    • 2013-09-19
    • US13617767
    • 2012-09-14
    • MASAZUMI TONEAKIO YAMAMOTOTAKASHI SHIBAOSAMU HIKINO
    • MASAZUMI TONEAKIO YAMAMOTOTAKASHI SHIBAOSAMU HIKINO
    • H04L5/14
    • H04L5/14H04B1/52H04B17/11
    • In a tunable duplexer combining a tunable filter with a canceler, calibration for optimizing passband characteristics and stop band characteristics is accelerated, and the deterioration of performance due to variations is highly accurately compensated. The tunable filter is calibrated to acquire isolation characteristics, and then coarse calibration and fine calibration are performed on the canceler. In coarse calibration, the use band of the tunable filter is set to a suppression band, and the isolation characteristics of the canceler are acquired. An amplitude, a phase, and a bias voltage are adjusted based on a result of comparison with the acquired isolation characteristics of the tunable filter for determining an approximate convergence. Fine calibration is further performed, and the optimum point is determined in a narrow range near the convergence.
    • 在将可调谐滤波器与消除器组合在一起的可调谐双工器中,加速了对通带特性和阻带特性进行优化的校准,并且高度准确地补偿了由于变化导致的性能劣化。 可调谐滤波器被校准以获得隔离特性,然后在消除器上进行粗略校准和精细校准。 在粗略校准中,可调谐滤波器的使用频带被设置为抑制频带,并且获取了消除器的隔离特性。 基于与用于确定近似收敛的可调谐滤波器的获取的隔离特性进行比较的结果来调整振幅,相位和偏置电压。 进一步执行精细校准,并且在收敛附近的窄范围内确定最佳点。