A Fully Integrated UHF CMOS Power Amplifier for Spacecraft Applications
A Fully Integrated UHF CMOS Power Amplifier for Spacecraft Applications
复制标题
适用于航天器应用的全集成 UHF CMOS 功率放大器
DOI：
10.1109/tmtt.2007.905481
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发表时间：
2007
影响因子：
4.3
通讯作者：
William B. Kuhn
中科院分区：
文献类型：
--
作者：
Jeongmin Jeon;William B. Kuhn
功率放大器(PA)是为火星探测车、航空机器人和小型网络着陆器上的表面到轨道邻近链路微收发器而设计的，与0.2分贝损耗的发射/接收开关一起工作，以允许几乎全部1W到达天线。首次报道了输出大于30dBm的全集成超高频CMOSPA。采用了带浮动偏置共源共栅晶体管和1：3匝比输出变压器的差动PMOS结构，以克服超高频下的低击穿电压(Vbk)和芯片面积消耗问题。蓝宝石衬底上的高Q值片上变压器使差分功放能够在400 MHz的频率下有效地驱动单端天线。标准封装中的功放可提供30dBm的输出，并可提高27%的功率效率。在连续波操作中没有观察到性能下降，该设计已经过测试，达到其额定3.3V电源的136%，没有故障。
A power amplifier (PA) is designed for a surface-to-orbit proximity link microtransceiver on Mars exploration rovers, aerobots, and small networked landers and works in conjunction with a 0.2-dB loss transmit/receive switch to allow nearly the full 1 W to reach the antenna. The fully integrated UHF CMOS PA with more than 30-dBm output is reported for the first time. A differential pMOS structure with floating-bias cascode transistors and 1:3-turn ratio output transformer are chosen to overcome low breakdown voltage (V bk) of CMOS and chip area consumption issues at UHF frequencies. The high-Q on-chip transformer on a sapphire substrate enables the differential PA to drive a single-ended antenna effectively at 400 MHz. The PA in a standard package delivers 30-dBm output with 27% power-added efficiency. No performance degradation was observed in continuous-wave operation and the design has been tested to 136% of its nominal 3.3-V supply without failure.