KU LNA BB 2240 A
Low Noise Broadband Amplifier
225 ... 400 MHz
The high linear preamplifier KU LNA BB2240 A is designed for the UHF communications band. It features best large signal performance and a low noise figure. Internally it uses 3dB hybrids for input and output coupling. This leads to good input return loss, output return loss and high third order intercept point (IP3). The preamplifier contains a bias-T for remote power supply via coaxial cable and a solder pin for direct power supply.
| Specifications | |
| Type | KU LNA BB 2240 A |
| Frequency range | 225 ... 400 MHz |
| Noise figure @ 18 °C | typ. 1.0 dB, max. 1.2 dB |
| Gain | min. 20 dB (max. +/- 2.5 dB) |
| Input power | max. +20 dBm (100 mW) |
| Output power P1dB | typ. +28 dBm @ 300 MHz |
| Saturation power | min. +30 dBm @ 300 MHz |
| Output IP3 | typ. +44 dBm @ 300 MHz |
| Input return loss (S11) | typ. 15 dB (min. 11 dB) |
| Output return loss (S22) | typ. 15 dB (min. 11 dB) |
| Supply voltage | +12 ... 15 V DC |
| Current consumption | typ. 400 mA |
| Input connector / impedance | SMA-female, 50 ohms |
| Output connector / impedance | SMA-female, 50 ohms |
| Case | milled aluminium |
| Dimensions (mm) | 78 x 41 x 22 |
| Weight | typ. 100 g |
Block diagram
Frequency response (diagram)
Important note
- Maximum input power +20 dBm (100 mW)
Features
- Low noise figure
- Large bandwidth
- High IP3 and high output power
- Very good input return loss (S11)
- Static protection (ESD) at preamplifier input
- Overvoltage protection and reverse polarity protection
- Remote power supply via output connector
- Solder pin for direct power supply
- Milled aluminium case
Applications
- Analog and digital transmission systems
- Suitable for large signal environments
- Amplifier for low power applications
- Driver amplifier
- Specifications subject to change without notice -
