A Low-Loss T/R Module With Balanced Power Amplifier for High Antenna Impedance Tolerance

IF 2.4 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC
Uday Maurya;Mahima Arrawatia;Nagarjuna Nallam
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Abstract

The balanced power amplifier (BPA) topology is commonly used in applications requiring high antenna impedance tolerance. This paper presents a low-loss transmit-receive (T/R) front-end module (FEM) with BPA using four shunt switches. These switches are embedded into the output network of the BPA and the input matching network of the common source low noise amplifier (LNA). A prototype T/R FEM is implemented in bulk CMOS 65 nm technology for the 5G FR2 n260 band. As per simulations, the extra loss due to the T/R interface in transmit mode is 0.75 dB, and the noise figure (NF) degradation in receive mode is 1.5 dB. The prototype chip is characterized by die-probing. The BPA delivers a saturated power output of + 18 dBm with a power-added efficiency (PAE) of 14.5 % at 40 GHz in measurements. The LNA has a gain of 21.3 dB and a noise figure of 5.8 dB in the n260 band.
具有高天线阻抗容限的平衡功率放大器的低损耗收发模块
平衡功率放大器(BPA)拓扑结构通常用于需要高天线阻抗容限的应用中。本文提出了一种采用双酚a的低损耗收发前端模块(FEM)。这些开关被嵌入到BPA的输出网络和共源低噪声放大器(LNA)的输入匹配网络中。在5G fr2n260频段上,采用批量CMOS 65nm技术实现了原型T/R FEM。根据仿真,在发射模式下,由于T/R接口造成的额外损耗为0.75 dB,而在接收模式下,噪声系数(NF)下降为1.5 dB。该原型芯片的特点是模探。BPA的饱和输出功率为+ 18 dBm,在40 GHz测量时的功率附加效率(PAE)为14.5%。LNA在n260频段的增益为21.3 dB,噪声系数为5.8 dB。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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