KU LNA 200250 A-SMA, Super Low Noise Pre-Amplifier
2000 … 2500 MHz
The super low-noise pre-amplifier KU LNA 200250 A was particularly developed by Kuhne for S-band receive applications, e.g., satellite ground station equipment. The combination of an extremely low noise figure, high P1dB and IP3, and switchable low-gain mode ensures a very high dynamic range.
Analog & digital transmission systems Satelite ground station Communication systems
- Extremely low noise figure
- Remote power supply via output connector possible
- Low-gain mode via solder pin
- Reverse polarity protection
The super low-noise pre-amplifier KU LNA 200250 A was particularly developed by Kuhne for S-band receive applications, e.g., satellite ground station equipment. The combination of an extremely low noise figure, high P1dB and IP3, and switchable low-gain mode ensures a very high dynamic range.
Lead time on request
| Frequency range | 2000..2500 MHz |
| Noise figure @ 18 °C | typ. 0.35 dB |
| max. 0.5 dB | |
| Gain | typ. 53 dB in high-gain mode |
| typ. 35 dB in low-gain mode | |
| Gain flatness | typ. +/- 3 dB in high-gain mode |
| typ. +/- 2.5 dB in low-gain mode | |
| Maximum input power | 10 mW |
| Output power (P1dB) | typ. +21 dBm |
| Output IP3 | typ. +35 dBm |
| Input return loss (S11) | typ. 12 dB |
| min. 8 dB | |
| Output return loss (S22) | typ. 15 dB |
| min. 12 dB | |
| Supply voltage | +9 ... 15 V DC |
| Current consumption | typ. 110 mA |
| Operating case temp. range | -40 ... +65 °C |
| Input connector / impedance | SMA-female, 50 ohms |
| Output connector / impedance | SMA-female, 50 ohms |
| Case | milled aluminium |
| Dimensions (mm) | 73 x 30 x 22 |
| Weight | 110 g (typ.) |
The KU LNA 200250 A has a bandwidth of 2 GHz to 2.5 GHz and is thus suitable for a variety of applications in the S-band microwave range, in particular for the amplification of weak satellite signals in low-noise receivers. Furthermore, the KU LNA 200250 A is characterized by a very low noise figure of typ. 0.35 dB and a gain of typically 53 dB. By connecting the second solder pin to ground, the gain can be decreased to typ. 35 dB without affecting the noise performance. The reverse polarity protection furthermore increases user-friendliness.
- Extremely low noise figure
- Remote power supply via output connector
- Low-gain mode via solder pin
- Reverse polarity protection
One of the critical key components of a wireless system is the low-noise amplifier (LNA). The LNA, usually connected close to the antenna, takes the weak radio-frequency (RF) signal from the antenna and amplifies it. The main function of the pre amp is to increase the amplitude of the receiving signal without adding much noise and distortion, in other words, to nearly maintain the signal to noise ratio (SNR) of the desired RF signal. The main characteristics of the low noise preamplifier are noise figure (NF), gain, and linearity. KUHNE electronic provides a variety of high quality low-noise and ultra low-noise amplifiers, covering frequency bands L, S, C, X, K, frequency selective and broadband. The functional bandwidth varies from several MHz to about 20 GHz. The website-filter on the product page can be used to refine your search results by frequency range, gain, noise figure and supply voltage. The broad portfolio of KUHNE RF LNAs offers high performance including low noise figure (NF), high gain, high linearity and small power consumption, therewith supports the customers in many different use cases and scenarios, e.g., high and low bandwidth applications, in commercial usage as well as for lab experiments and research. Several application examples are given as follows: the 2 GHz UHF broadband low noise amplifier KU LNA BB 2227 A can be used in the RF front end of a multitude of wireless standards in the ISM band, like UMTS, bluetooth, radar, or 2.4 GHz Wi-Fi, e.g., supporting the communication and video transportation in sports events. Another example is the 5-6 GHZ RF linear preamp KU LNA 5059 A, which is needed in IEEE 802.11a/n/ac Wi-Fi systems operating in the 5.1-5.85 GHz range. Other applications like Automatic Dependent Surveillance Broadcast (ADS-B): KU LNA 1090-2 A, Multichannel Multipoint Distribution Service (MMDS): KU LNA BB 2227 A, Radio astronomy: KU LNA 142 AH, Satellite Communication (Satcom) systems: KU LNA 152 AH and so on can be found in the product descriptions. KUHNE electronic also focuses on the dynamic demands of markets and provides most up-to-date customized solutions. We offer low-noise amplifiers (LNAs) with special features, such as different connector types (SMA, N, Waveguide, and many more), remote power supply via coaxial cable, waterproof cases and so on. Our professional RF products and components enable optimum measure, test, and field application experience.
