A New Distributed Parameter Broadband Matching Method for Power Amplifier via Real Frequency Technique
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- 6 January 2015
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Microwave Theory and Techniques
- Vol. 63 (2), 449-458
- https://doi.org/10.1109/tmtt.2014.2385087
Abstract
A general matching method is presented in this paper for broadband power amplifier (PA) design. A novel cost function is proposed for the real frequency technique (RFT), which could straightforwardly describe PA optimal impedance along with frequency change. The new function is also developed to design a broadband transformer for the PA output matching network (MN). Based on Richard transformation, a commensurate transmission line is deployed so that the PA matching could be convenient expressed by a real positive function. More important is that the function could be directly implemented with a distributed MN through synthesis theory. Therefore, this method is practical for computer-aided design and has less calculation amount with new function for the RFT. To verify the method, a step-by-step design of a broadband PA is given. For large signals, power gain is 14.2-16.8 dB across 0.9-2.8 GHz, while output power is around 39.5 dBm. The maximum power-added efficiency is from 52.2% to 85.1%.Keywords
This publication has 24 references indexed in Scilit:
- A Doherty Architecture With High Feasibility and Defined Bandwidth BehaviorIEEE Transactions on Microwave Theory and Techniques, 2013
- Analysis of a Broadband High-Efficiency Switch-Mode $\Delta \Sigma $ Supply Modulator Based on a Class-E Amplifier and a Class-E RectifierIEEE Transactions on Microwave Theory and Techniques, 2013
- 2–4 GHz wideband power amplifier with ultra‐flat gain and high PAEElectronics Letters, 2013
- A Modified Doherty Power Amplifier With Extended Bandwidth and Reconfigurable EfficiencyIEEE Transactions on Microwave Theory and Techniques, 2013
- Decade bandwidth high efficiency GaN HEMT power amplifier designed with resistive harmonic loadingPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2012
- Efficiency-enhanced Doherty amplifier with extended bandwidth based on asymmetrical drain voltagePublished by Institute of Electrical and Electronics Engineers (IEEE) ,2012
- Design of a Highly Efficient 2–4-GHz Octave Bandwidth GaN-HEMT Power AmplifierIEEE Transactions on Microwave Theory and Techniques, 2010
- Accurate Models for Microstrip Computer-Aided DesignPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2005
- A new approach to gain-bandwidth problemsIEEE Transactions on Circuits and Systems, 1977
- A special class of functions with positive real part in a half-planeDuke Mathematical Journal, 1947