It is broadband in 400 MHz- 470 MHz and doesnt require any tuning or adjusting.
The experimental results have indicated that the drain efficiency of the circuit varies from 68 to 80% within the desired band. HIGH POWER AMPLIFIER 7 W WIDEBAND FROM 400 MHz - 470 MHz GAIN 45 dB: Model: ZH-4047/7-1 Price: call Order Online: This is a tested high quality professional 7 W RF amplifier that requires minimum driving input of 1 m W for the maximum of 7 W RF power output. Also available is our broad line of high power modules including 25, 50, and 100 watt pallets for integrating into your own power amplifier design. In order to confirm the developed analytic approach, a 10 W prototype amplifier model was designed and fabricated to operate within the global system for mobile communications (GSM) frequency band 850–950 MHz using a commercial GaN power high electron mobility transistor (HEMT). L and S Band 1,2,4, and 8 Kilowatt rack mount solid state microwave amplifiers ideal for CW and pulse TWT amplifier replacement utilizing GaN technology and rivals the TWT amplifier in size and weight. A detailed derivation for the necessary relations of output power, drain efficiency, and the required harmonic load impedances is provided, showing a significant improvement in theoretical maximum efficiency from 78.5 to 89.8%. In this paper, an enhanced mode of operation for the class-J power amplifier is proposed by incorporating a third harmonic voltage component to produce an optimum waveform for maximizing the fundamental voltage component and thereby to increase the drain efficiency and introduce a new design space.
However, the maximum theoretical efficiency is limited to that of the class-B power amplifier. 2 Channel 4500 Watts Professional DJ PA Power Amplifier 2U Rack mount SYS-4500 MUSYSIC.
Continuous mode class-J radio-frequency (RF) power amplifier is a promising technique that extends the operating bandwidth of the conventional class-B power amplifier.