100 kHz to 2 GHz LNA

This is a low noise RF amplifier that provides excellent gain and noise figure. The gain at 100 MHz is 30 dB while the noise figure is 2.2 dB. The LNA can be used in a number of different receiver applications such as Ham Radio, Software radio, TV reception, etc. The product is ideally suited as a pre-amplifier for software radio products such as RTL-SDR, HackRF, USRP, etc., where the USB power supply means you can power it off your laptop.

FEATURES

  • Wideband LNA with 30 dB Maximum Gain between 100 kHz and 2 GHz;
  • Operational from 100 kHz to 5 GHz
  • Suitable for use with software radio receivers such as HackRF, BladeRF, RTL-SDR, USRP, etc.
  • LED power indicator
  • SMA-F connectors
  • USB powered (cable not included)
  • Pads for two-pin power header

SPECIFICATIONS

Frequency              Gain

100 kHz                18 dB

1 MHz                  25 dB

10 MHz                 27 dB

100 MHz                31 dB

1 GHz                  24 dB

2 GHz                  19 dB

3 GHz                  14 dB

4 GHz                  12 dB

5 GHz                  10 dB

6 GHz                   6 dB

Output IP3

+27 dBm

Maximum RF Input Power

+13 dBm

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16 thoughts on “100 kHz to 2 GHz LNA

      1. Hi Valter, sorry for that error. The minimum RF input power can be as low as possible, but the receiver will only detect it if the receiver noise floor is low. The noise figure of this LNA is less than 3 dB at 2.4 GHz. What is the noise floor of your receiver and what does your setup look like?

      2. Our signal input to yours LNA it’s from a shilded cable Bluetooth Low Energy signal at 2.4GHz from -21dBm up to +3dBm transmitted by our BLE Modules. Then the LNA gain it’s fixed at +20dBm (or +40dBm) so the LNA output signal reach the final 2.4GHz antenna using an RF cable of maximum 3 meters.

  1. You should be fine with this LNA. The concern I would have is more at the upper end as the P1dB is -10 dBm. So at that power level, the signal starts to saturate.

  2. So, I understand that the P1dB OUTPUT power is at -10dBm.
    What does than the parameter Maximum RF INPUT Power +13dBm mean?

    Thanks, Bojan

    1. The Maximum Input power refers to the maximum CW signal amplitude that the LNA can withstand. When the input signal exceeds this level of +13 dBm, you risk damaging the LNA. Obviously at +13 dBm the amplifier is deep in saturation as the P1dB spec has been exceeded.

  3. I like what I see but the selection of usable LNAs for most ham applications is rather limited. Most hams would use something in the 1-54, or 1-144, or 1-455 MHz range and from what I see you have a 10-2000 MHz LNA with a nice 0.5dB Noise figure and a 100kHz-2000MHz LNA with a much worse 2.0dB noise figure. Anything coming in between???

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