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首页> 外文期刊>International Journal of Microwave and Wireless Technologies >Large-signal vector characterization of LDMOS devices for analysis and design of broadband Doherty high-power amplifiers
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Large-signal vector characterization of LDMOS devices for analysis and design of broadband Doherty high-power amplifiers

机译：LDMOS器件的大信号矢量表征，用于宽带Doherty大功率放大器的分析和设计

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摘要

We present a novel broadband large-signal vector characterization technique, suitable for high-power broadband Doherty amplifiers (DPAs). It consists of characterizing the DPA three-port sub-circuit composed of the main and peak power devices that are inter-connected by the input network. We discuss a suitable way to extract the three-port X-parameters of a DPA sub-circuit, which is based on a pair of high-power Silicon Laterally Diffused MOSFETs (LDMOSs) for UHF applications. It is then applied to the analysis of a high-power broadband DPA developed on the basis of the same DPA sub-circuit. This technique permits the broadband analysis of the operation of the DPA, as well as to get insight on the load modulation for both the peak and main devices, while they mutually interact through the input network. Measurements and simulated data in the 700-960 MHz bandwidth are compared so as to demonstrate the feasibility of three-port X-parameters characterization for high-power DPAs in UHF band.
机译：我们提出了一种新颖的宽带大信号矢量表征技术，适用于大功率宽带Doherty放大器（DPA）。它包括表征DPA三端口子电路，该子电路由通过输入网络互连的主功率设备和峰值功率设备组成。我们讨论了一种提取DPA子电路的三端口X参数的合适方法，该方法基于一对用于UHF应用的大功率硅横向扩散MOSFET（LDMOS）。然后将其用于分析基于同一DPA子电路开发的高功率宽带DPA。该技术允许对DPA的运行进行宽带分析，并在峰值和主设备通过输入网络相互交互的同时深入了解峰值和主设备的负载调制。比较了700-960 MHz带宽中的测量值和模拟数据，从而证明了在UHF频带中表征三端口X参数用于高功率DPA的可行性。

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