Abstract
The class-AB/ F power amplifier (PA), Class F is commonly understood to be a switching PA, but in fact, it can also be a transconductance PA, depending on how hard the active device is driven. This paper presents the design a multistage class AB/Inverse F power Amplifier with high power added efficiency (PAE) and acceptable linearity for the WLAN applications. The effectiveness of the proposed controller has been verified by comparing proposed method with another methods using simulation study under a variety of conditions. The proposed circuit operation for a WLAN signal delivers a power-added efficiency (PAE) of 43.9% is measured at 32.1-dBm output power and linearity of inverse class F displays the simulation result of 1-dB compression output power of 17.5 dBm at -22.4 dBm input power. Finally, the proposed PA is show a good and acceptable result for the WLAN system.
Highlights
The integration of wireless communication systems requires stringent capabilities in terms of linearity and efficiency
It is well known that the power amplifier (PA) need to amplify signals efficiently to increase the battery life that typically deliver their highest efficiency at maximum output power in linearity becomes significant (Zhen L., et al, 2002)
This paper focus on control the shape and overlap of the drain voltage and/or current waveforms for class-AB/IF power amplifier using appropriate gate biasing and harmonic terminations
Summary
The integration of wireless communication systems requires stringent capabilities in terms of linearity and efficiency. Power amplification techniques with inherently more power efficient have been researched to satisfy the requirements B., 1999; Matsuge K., et al, 2004) for improve performance of PA there are many drawbacks such as envelop tracking technique and weighted polynomial digital pre-distortion technique but still these techniques including complex circuit configuration, modest enhancement and high cost. This paper focus on control the shape and overlap of the drain voltage and/or current waveforms for class-AB/IF power amplifier using appropriate gate biasing and harmonic terminations. The simulation result show that proposed PA are significantly improvement the linearity, efficiency and output power can be achieved with proper harmonic terminations and proper biasing voltage
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