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Simulation and Effects of Phase Signal Leakage in an Improved Kahn Based Modulator for a High Efficiency Power Amplifier
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- Authors
- Sung Jun Lee, Chang Wahn Yu, Jae Ho Jung, Kwang Chun Lee
- Issue Date
- 2012-12
- Citation
- Asia-Pacific Microwave Conference (APMC) 2012, pp.935-937
- Publisher
- IEEE
- Language
- English
- Type
- Conference Paper
- Abstract
- This paper presents a simulation related to phase signal leakage in an improved Kahn based modulator for a high efficiency power amplifier. It contains a mathematical modeling of a leaked phase signal, an EVM simulation versus leakage, and a validation of the simulation method through comparison with measurement results. These are done using a LTE signal which has a bandwidth of 10 MHz, a PAPR of 9.9 dB, and a carrier frequency of 2.6 GHz for a modulator with a 3-level LPDSM. The difference between simulated and measured percent EVM is less than 0.2 %p. It is also shown that a leakage value L can be estimated from characteristics of a mixer and a LPDSM. And effects of phase signal leakage on efficiency of a power amplifier are discussed. © 2012 IEEE.
- KSP Keywords
- 2.6 GHz, 3-Level, Carrier frequency, Mathematical Modeling, Simulation method, high-efficiency power amplifiers(PAs), measurement results, signal leakage