The present paper Performance improvement in high speed low power out put Buffer amplifier for large –LCD applications. The proposed buffer achieves high-speed driving performance while drawing a low quiescent current during static operation. The circuit offers enhanced slewing capabilities with limited power consumption by exploiting a slew detector which monitors the output voltage of the inp...

This work presents the design and implementation of a stand-alone linear power amplifier at 2.4 GHz with high output power. A GaN HEMT transistor is selected for the design and implementation of the power amplifier. The device exhibits a gain of 11.7 dB and a drain efficiency of 39 % for an output power of 36.7 dBm at 2.4 GHz for an input power of 25 dBm. The carrier to intermodulation ratio is...

This paper describes the design, implementation and characterization of a high efficiency 10-GHz amplifier antenna array for spatial power combining. An average drain efficiency of 70% at 162 W EIRP, or about 1.5 W of transmitted power, is measured for an array of 16 amplifiers consisting of four 4-element subarays. The power combining efficiency of the 16-element array is above 79%. The active...

Orthogonal Frequency Division Multiplexing (OFDM) is a very effective field of research of wireless communication and also the high speed data transmission process in this system. The main drawback of OFDM system is high Peak to – Average Power Ratio (PAPR). Due to high PAPR there is inefficient use of high power amplifier and this could limit transmission efficiency. Selected mapping (SLM) is ...

This paper describes the design and measured performance of a 1-8GHz power amplifier MMIC fabricated with a 0.15um Gallium Nitride (GaN) process technology. The process features a 100um thick Silicon Carbide (SiC) substrate and compact transistor layouts with individual source grounding vias (ISV). The design utilizes a non-uniform distributed power amplifier (NDPA) topology with a novel trifil...

A class E power amplifier including coupling coils is proposed for application in a wireless power transfer system using magnetic coupling. The proposed amplifier is directly connected to the coils with no discrete components for harmonic filtering and dc feeding, which could cause efficiency degradation of the amplifier. The system with the differential amplifier shows 6.95 W of transmitted po...