Class F Power Amplifier Thesis

Class F Power Amplifier Thesis-67
Recent works on class F PA in wireless applications are examined and a comparison of the PA performances of various techniques is presented.

A probe feed location was found to obtain the required optimum impedance at th...

Highly efficient class F power amplifier (PA) in Gigahertz (GHz) frequencies for wireless application is reviewed in this paper.

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Each PA produced a PAE of greater than 70% and good agreement was obtained between the simulated and measured results.

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The PAE obtained in these works is comparable to that reported in published papers.By continuing to use this site, you consent to the use of cookies.We use cookies to offer you a better experience, personalize content, tailor advertising, provide social media features, and better understand the use of our services.The study focused on the technique used in designing a class F PA especially at GHz frequencies. Several works on the class F PA with different semiconductor technologies from year 2001 to 2016 are discussed. The formulas for the first four mode frequencies were derived using odd and even mode analysis while a new and simpler formula for the fourth mode frequency was obtained.A systematic design approach to obtain the dimensions of the antenna is presented for an antenna operating at a given fundamental mode frequency.For matching, a new explicit matrix input impedance formula for the H-shaped antenna has been obtained using segmentation method.Using this formula, the location of the probe feed could be adjusted to obtain the required impedance at the pre-assigned frequency.For these three PAs the simulated drain voltage/current waveforms, return loss, stability factor, power gain, output power and power added efficiency (PAE) are presented.The practical results are compared with those obtained by simulation.


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