A1020-200-20 Wideband 10kHz-10MHz, 200W Ultrasonic Power Amplifier Dr.Hubert

The A1020-200-20 is a broadband RF amplifier in the frequency range of 100 kHz...20 MHz with a linear output power of at least 200 W. 

Due to the continuous miniaturization of electronics, higher and higher frequencies are used e.g. in power supply. Due to their limited frequency range, the usual linear AF amplifiers quickly reach their limit for testing the components and parts used. The A1020-200-20 now allows testing at up to 20 MHz using RF amplifier technology, without the typical problems that can otherwise occur when using RF amplifiers. 

The amplification is adapted for the connection of a typical function generator, transients caused by switching relays in the signal path, as is common with these generators, do not lead to defects of the input stage. In addition, the output of function generators in the "off" state is not terminated and represents a good antenna. The input of the A1020-200-20 can be used without problems in idle mode even with coaxial cable connected, without amplifying unwanted signals. 

Special attention was paid to a high linear driveability with low distortion for RF amplifiers. The output stage is stable at all loads, critical load conditions lead at most to a safe shutdown of the amplifier. 

The amplifier output is designed for a nominal impedance of 50 Ω, as is usual for RF amplifiers. It is permitted to connect and operate a load deviating from this, but the maximum output power cannot then be achieved. For low impedance (recommended < 25 Ω) and high impedance (recommended > 100 Ω) loads, a bidirectional 1:4 matching transformer can therefore be connected as close as possible to the load. This allows voltage or current to be doubled depending on the direction and expands the loads that can be connected in a sensible way and thus the application and test options. 

The matching transformer is optimized for the highest possible bandwidth and bidirectionality. On request, other transformation ratios can also be realized, but then they are usually not bidirectional. Contact us with your special requirements. We will check for you what is feasible.

Applications 

• Universally applicable in research and development, also for non-skilled RF users 

• Measurements on components such as inductors, transformers, capacitors, etc. 

• Control of piezo actuators 

• Supply and measurement of ultrasonic transducers

Features 

• Universally applicable RF amplifier from 100 kHz...20 MHz

• Linear output power of up to 250 W at 50 Ω • Very linear gain over frequency 

• High stability of gain over temperature 

• The ampllifer can reproduce all known forms of modulation of a sinusoidal signal, from Amplitude-Modulation to Frequency- and Phase-Modulation, to pulse and burst signals.

• Optimized for operation with common function generators 

• Input impedance 50 Ω, tolerates open leads • Rated output impedance 50 Ω, output signal stable on all resistive and complex loads 

• Optional bidirectional matching transformer (B-MT-1) for operation on low and high impedance loads • Temperature controlled fan and over temperature shutdown 

• Overload shutdown for safe operation • Monitor output (-50 dB @ 50 Ω) for interference-free monitoring of the output signal • Interlock for safe shutdown during test setups 

• Efficient wide range power supply with a line factor close to 1