Wideband power efficient high transmission power radio frequency (RF) transmitter
    2.
    发明授权
    Wideband power efficient high transmission power radio frequency (RF) transmitter 有权
    宽带功率高功率射频(RF)发射机

    公开(公告)号:US09118367B2

    公开(公告)日:2015-08-25

    申请号:US13849112

    申请日:2013-03-22

    CPC classification number: H04B1/0475 H03M1/66

    Abstract: Embodiments provide transmitter topologies that improve the power efficiency and bandwidth of RF transmitters for high transmission power applications. In an embodiment, the common-emitter/source PA of conventional topologies is replaced with a current-input common-base/gate PA, which is stacked on top on an open-collector/drain current-output transmitter. The common-base/gate PA protects the output of the transmitter from large output voltage swings. The low input impedance of the common-base/gate PA makes the PA less susceptible to frequency roll-off, even in the presence of large parasitic capacitance produced by the transmitter. At the same time, the low input impedance of the common-base/gate PA reduces the voltage swing at the transmitter output and prevents the transmitter output from being compressed or modulated. In an embodiment, the DC output current of the transmitter is reused to bias the PA, which results in power savings compared to conventional transmitter topologies.

    Abstract translation: 实施例提供了发射机拓扑,其提高用于高传输功率应用的RF发射机的功率效率和带宽。 在一个实施例中,常规拓扑的共发射极/源极PA被替换为电流输入公共基极/栅极PA,其在集电极开路/漏极电流输出发射器上堆叠在顶部。 公共端/门PA保护发射机的输出免受大的输出电压摆幅。 公共基极/门极PA的低输入阻抗使得即使在发射机产生大的寄生电容的情况下,PA也不易于频率滚降。 同时,公共基极/门极PA的低输入阻抗降低了发射机输出端的电压摆幅,并防止发射机输出被压缩或调制。 在一个实施例中,与常规发射机拓扑相比,发射机的DC输出电流被重新用于偏置PA,这导致功率节省。

    Wideband Power Efficient High Transmission Power Radio Frequency (RF) Transmitter
    5.
    发明申请
    Wideband Power Efficient High Transmission Power Radio Frequency (RF) Transmitter 有权
    宽带功率有效的高功率射频(RF)发射机

    公开(公告)号:US20130235953A1

    公开(公告)日:2013-09-12

    申请号:US13849112

    申请日:2013-03-22

    CPC classification number: H04B1/0475 H03M1/66

    Abstract: Embodiments provide transmitter topologies that improve the power efficiency and bandwidth of RF transmitters for high transmission power applications. In an embodiment, the common-emitter/source PA of conventional topologies is replaced with a current-input common-base/gate PA, which is stacked on top on an open-collector/drain current-output transmitter. The common-base/gate PA protects the output of the transmitter from large output voltage swings. The low input impedance of the common-base/gate PA makes the PA less susceptible to frequency roll-off, even in the presence of large parasitic capacitance produced by the transmitter. At the same time, the low input impedance of the common-base/gate PA reduces the voltage swing at the transmitter output and prevents the transmitter output from being compressed or modulated, In an embodiment, the DC output current of the transmitter is reused to bias the PA, which results in power savings compared to conventional transmitter topologies.

    Abstract translation: 实施例提供了发射机拓扑,其提高用于高传输功率应用的RF发射机的功率效率和带宽。 在一个实施例中,常规拓扑的共发射极/源极PA被替换为电流输入公共基极/栅极PA,其在集电极开路/漏极电流输出发射器上堆叠在顶部。 公共端/门PA保护发射机的输出免受大的输出电压摆幅。 公共基极/门极PA的低输入阻抗使得即使在发射机产生大的寄生电容的情况下,PA也不易于频率滚降。 同时,公共基极/门极PA的低输入阻抗降低了发射机输出端的电压摆幅,并防止发射机输出被压缩或调制。在一个实施例中,发射机的直流输出电流被重新使用 偏置PA,与常规发射机拓扑结构相比,导致功率节省。

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