Complimentary switched amplifier transceiver system
    1.
    发明授权
    Complimentary switched amplifier transceiver system 失效
    免费开关放大器收发器系统

    公开(公告)号:US5669068A

    公开(公告)日:1997-09-16

    申请号:US497835

    申请日:1995-07-03

    摘要: A complimentary switched amplifier transceiver (10) is provided which offers performance advantages and reduces system complexity over conventional half-duplex transceivers by using complimentary switched amplifiers for eliminating switches. Power output to a channel transition (31) from a transmit amplifier (26) is not degraded by a switch insertion loss in a transmit mode. Receiver noise figure is not degraded due to the switch insertion loss from the channel transition (31) to a receive amplifier (27). Switch devices and their associated control lines are eliminated, reducing circuit complexity for complimentary switched amplifier circuits such as a combined amplifier switch (12) and a first bi-directional amplifier (22).

    摘要翻译: 提供了一种互补的开关放大器收发器(10),通过使用用于消除开关的互补开关放大器,提供了性能优势,并降低了传统半双工收发器的系统复杂性。 从发射放大器(26)到信道转换(31)的功率输出不会因发射模式中的开关插入损耗而劣化。 由于从通道转换(31)到接收放大器(27)的开关插入损耗,接收机噪声系数不会降低。 消除了开关器件及其相关联的控制线,降低了诸如组合放大器开关(12)和第一双向放大器(22)之类的互补开关放大器电路的电路复杂性。

    Power amplifier core
    3.
    发明授权
    Power amplifier core 有权
    功率放大器核心

    公开(公告)号:US06300835B1

    公开(公告)日:2001-10-09

    申请号:US09458286

    申请日:1999-12-10

    IPC分类号: H03F316

    摘要: A power amplifier core (40) for amplifying RF signals is provided. The power amplifier core (40) includes a first string of FET cells (46) for amplifying the RF signal. The FET cell string includes at least two FET cells (46) connected in series with an output port (48) of the amplifier core. A bias network (44) coupled between an amplifier core input port (42) and the FET cells (46) couples the RF signal to the FET cells (46). The bias network (44) includes a bias capacitor (50) and a resistor network. The bias capacitor (50) is coupled to the input port (42) for AC coupling the RF signal to an associated FET cell (46) in the FET cell string. The resistor network is coupled from the bias capacitor (50) to the associated FET cell (46) for providing a DC bias to the associated FET cell (46).

    摘要翻译: 提供了用于放大RF信号的功率放大器核心(40)。 功率放大器芯(40)包括用于放大RF信号的第一串FET单元(46)。 FET单元串包括与放大器芯的输出端口(48)串联连接的至少两个FET单元(46)。 耦合在放大器核心输入端口(42)和FET单元(46)之间的偏置网络(44)将RF信号耦合到FET单元(46)。 偏置网络(44)包括偏置电容器(50)和电阻器网络。 偏置电容器(50)耦合到输入端口(42),以将RF信号AC耦合到FET单元串中的相关联的FET单元(46)。 电阻网络从偏置电容器(50)耦合到相关联的FET单元(46),以向相关联的FET单元(46)提供DC偏置。

    Differential pair, push-push oscillator
    4.
    发明授权
    Differential pair, push-push oscillator 失效
    差分对,推挽式振荡器

    公开(公告)号:US4977379A

    公开(公告)日:1990-12-11

    申请号:US373557

    申请日:1989-06-30

    IPC分类号: H03B5/12 H03B19/14

    摘要: A differential pair, push-push oscillator for generating clocking signals. This oscillator consists of two, single transistor oscillators that both oscillate at f.sub.o with a 180.degree. phase difference. The phase difference is caused by the direct connection of the transistors' drains. A current source, connected to the transistors' drains, biases the transistors. The common drain connection also serves as an output for the differential pair, push-push oscillator. This output, a stable, relatively high power signal of frequency 2f.sub.o, is a composite of the two signals from the single transistor oscillators.

    摘要翻译: 差分对,用于产生时钟信号的推挽式振荡器。 该振荡器由两个单晶体振荡器组成,两个振荡器在fo处以180°的相位差振荡。 相位差由晶体管漏极的直接连接引起。 连接到晶体管漏极的电流源偏置晶体管。 普通漏极连接也用作差分对,推压式振荡器的输出。 这个输出是一个稳定的,相对较高的频率2fo的功率信号,是来自单个晶体管振荡器的两个信号的复合。