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The use of microwave technology is increasing in cardiac applications for microwave assisted balloon angioplasty and microwave cardiac ablation. Traditional microwave energy sources used in these procedures have poor efficiency and are large in size requiring them to be located far from the patient, and require coaxial cables to deliver power resulting in loss and heat generation causing potential...
A compact ultra-wideband low-noise amplifier (LNA) with a 12.4-dB maximum gain, a 2.7-dB minimum noise figure (NF), and a bandwidth over 0.1-14 GHz is realized in a 0.13-μm CMOS technology. The circuit is basically an inductorless configuration using the resistive-feedback and current-reuse techniques for wideband and high-gain characteristics. It was found that a small inductor of only 0.4 nH can...
Class E amplifiers were introduced by the Sokals in the 70 s and, since then, numerous applications where higher efficiency was one of the key issues have seen the light. In this work a review of some useful and simple techniques to observe the collector/drain voltage waveform of the device was explained with examples. This work is really interesting for RF/MW high efficiency power amplifier designers...
A high power amplifier has been developed for the RIB program, where in a typical 1 kW triode based amplifier drives a high power 40 kW (CW) radio frequency amplifier for the frequency range of 32 MHz to 39 MHz. This driver amplifier has been realized in grounded grid configuration. The analysis of this amplifier has been carried out using ABCD parameters method. It uses a linear small-signal AC model...
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