MKU PA 13250 CU
High Power Amplifier for 1.3 GHz
1270 ... 1300 MHz • 250 W
This linear high power amplifier was developed for producing high frequency energy for accelerators applications.
High power, high efficiency and best linearity are achieved by our high power amplifier for the 23 cm amateur radio band. Compared to tube power amplifiers the used LDMOS transistor operates with a supply voltage of only +50 V DC. High voltage transformers, waiting for tube warm-up and retuning of the tube are the past! The power amplifier can be mounted close to the antenna to avoid power losses caused by long coaxial cable.
| Specifications | |
| Type | MKU PA 13250 CU |
| Frequency range | 1270 ... 1300 MHz |
| Input power | 4 ... 6 W |
| Max. input power | 6 W |
| Output power P1dB | typ. 250 W |
| Saturation power | typ. 300 W |
| Small signal gain | min. 17 dB |
| Gain flatness | max. +/- 1 dB |
| Harmonic rejection | min. 35 dB @ 250 W |
| IM3 @ 200 W PEP | -40 dBc |
| Efficiency | typ. 50 % @ 250 W |
| ON voltage | +9 ... 14 V DC (ON) |
| Input return loss (S11) | typ. 10 dB |
| VSWR of load | max. 1.8:1 |
| Maximum case temperature | +65 °C |
| Supply voltage | +50 V DC |
| Current consumption | max. 12 A @ 300 W (CW) |
| Quiescent current | typ. 0.25 A |
| Input connector / impedance | SMA-female, 50 ohms |
| Output connector / impedance | N-female, 50 ohms |
| Case | milled copper, silver-plated |
| Dimensions (mm) | 130 x 59 x 20 |
| Weight | typ. 730 g |
Features
- Milled copper case to provide optimum heat transfer
- 50 V LD MOSFET technology
- High linearity
- High efficiency (up to 50 %)
- Overvoltage protection and reverse polarity protection
- Monitor output for forward power detection (DC voltage)
- ON / OFF control with DC voltage
Applications
- Research: High Power Amplifier for accelerators
- Analog and digital (COFDM) transmission systems
- Amateur Radio operations (EME, contest)
Options
- Amplifier mounted on heat sink with fans
- Amplifier installed into 19" rackmount case
- High linear version "Class A" on request
Accessories
- Recommended power supply: SP 500 W 48
- Recommended heat sink: SK 200 - 160 1)
- Recommended fan: 2 pieces FAN 80x80 HP 24 V 1)
- Recommended heat-conductive paste: Arctic Silver 5
- Circulator VAM 1081 as a protection in case of bad antenna matching
You will find further information for dimensioning heat sinks under the rubric heat sinks.
1) Dimensioned for 25 °C ambient temperature
- Specifications subject to change without notice -
