Zeenko ZK04-BM Low-noise RF amplifier 100 kHz – 4 GHz

The ZK04-BM is an ultra-low-power low-noise RF amplifier from Zeenko’s BM series, operating in the 100 kHz to 4 GHz range. The BM version is equipped with a built-in battery, making it ideal for portable applications. The internal rechargeable battery provides up to 20 hours of operation, and charging is performed at 210 mA. The module is designed for applications requiring high sensitivity and low noise, such as spectrum analyzer front ends, antenna systems, and RF receivers.

Thanks to the built-in bias circuit and low power consumption, the ZK04-BM performs excellently in mobile environments, offering stable gain and high overload resistance. It can be used as a replacement for popular amplifiers such as SPF5189Z and SPF5043Z.

Properties

Frequency range: 100 kHz – 4 GHz

Power supply: built-in battery

Charging current: 210 mA

Total current consumption: 215 mA

Battery runtime: up to 20 hours

Gain:

21 dB @ 100 kHz / 5 MHz

20 dB @ 10 MHz

19 dB @ 100 MHz

15.5 dB @ 1 GHz

12 dB @ 2 GHz

9 dB @ 3 GHz

7 dB @ 4 GHz

Noise figure (NF):

2.3 dB @ 10 MHz

1 dB @ 100 MHz

0.7 dB @ 1 / 2 / 3 GHz

1 dB @ 4 GHz

OP1dB (1 dB compression point):

12 dBm @ 10 MHz

15 dBm @ 100 MHz

16 dBm @ 1 GHz

16 dBm @ 2 GHz

17 dBm @ 3 GHz

16 dBm @ 4 GHz

OIP3 (third-order intercept point):

17 dBm @ 10 MHz

18 dBm @ 100 MHz – 2 GHz

19 dBm @ 3 GHz

20 dBm @ 4 GHz

Notes: ultra-low-power, low-noise, portable battery-powered version