Amplificadores de bajo ruido (LNA) de Zeenko

Existe una gama de amplificadores LNA de Zeenko, que por su precio merece ser probada, para al menos ver el circuito y los componentes que monta.

Los modelos BM llevan baterias y los UM no.

ZK05-BM (100kHz-6GHz) por 16€ en Aliexpress

Curvas de ganancias de los distintos modelos

Model	Freq range	Gain	NF	OP1dB	OIP3	Supply Current	Note
ZK04-UM	100k-4GHz	25dB@100kHz 25dB@5MHz 23dB@10MHz 21.5dB@100MHz 18dB@1GHz 14dB@2GHz 11dB@3GHz 9dB@4GHz	2.3dB@10MHz 1dB@100MHz 0.7dB@1GHz 0.7dB@2GHz 0.7dB@3GHz 1dB@4GHz	13dBm@10MHz 16dBm@100MHz 17dBm@1GHz 17dBm@2GHz 18dBm@3GHz 17dBm@4GHz	22dBm@10MHz 27dBm@100MHz 26dBm@1GHz 28dBm@2GHz 28dBm@3GHz 27dBm@4GHz	26mA Off-chip bias, user can adjust the bias resistor to reduce the current	Low power, low noise Can be used to replace SPF5189Z,SPF5043Z modules
ZK05-UM	100k-6GHz	28dB@100kHz 28dB@5MHz 27dB@10MHz 26.5dB@100MHz 24.5dB@1GHz 22.5dB@2GHz 21dB@3GHz 20dB@4GHz 18.5dB@5GHz 16.5dB@6GHz	1.9dB@10MHz 1dB@100MHz 0.6dB@1GHz 0.7dB@2GHz 0.7dB@3GHz 0.9dB@4GHz 1.1dB@5GHz 1.7dB@6GHz	16dBm@10MHz 18dBm@100MHz 18dBm@1GHz 18dBm@2GHz 18dBm@3GHz 17dBm@4GHz 15dBm@5GHz 13dBm@6GHz	27dBm@10MHz 30dBm@100MHz 32dBm@1GHz 32dBm@2GHz 32dBm@3GHz 31dBm@4GHz 29dBm@5GHz 23dBm@6GHz	68mA Off-chip bias, user can adjust the bias resistor to reduce the current	Broadband, Low Noise Can be used to replace TQP3M9035,QPL9058 TQP3M9037,QPL9547 modules
ZK06-UM	10M-6GHz	5dB@100kHz 23.5dB@5MHz 27dB@10MHz 25.5dB@100MHz 22.5dB@1GHz 22.5dB@2GHz 21dB@3GHz 22dB@4GHz 23dB@5GHz 22.5dB@6GHz	2.3dB@10MHz 0.8dB@100MHz 0.6dB@1GHz 0.7dB@2GHz 0.7dB@3GHz 0.7dB@4GHz 0.8dB@5GHz 1.0dB@6GHz	16dBm@10MHz 18dBm@100MHz 18dBm@1GHz 18dBm@2GHz 18dBm@3GHz 18dBm@4GHz 17dBm@5GHz 16dBm@6GHz	26dBm@10MHz 32dBm@100MHz 34dBm@1GHz 33dBm@2GHz 32dBm@3GHz 32dBm@4GHz 31dBm@5GHz 25dBm@6GHz	80mA Off-chip bias, user can adjust the bias resistor to reduce the current	Broadband, low noise Good flatness in the 1-6 GHz range Recommended for use as tinySA ULTRA 5.8GHz preamplifier Can be used to replace QPL9503,QPL9504 modules
ZK09-UM	100k-10GHz	21dB@100kHz 21.5dB@5MHz 21.5dB@10MHz 21.5dB@100MHz 21.5dB@1GHz 21dB@2GHz 21dB@3GHz 20dB@4GHz 18.5dB@5GHz 17.5dB@6GHz 16.5dB@7GHz 15dB@8GHz 14dB@9GHz 13dB@10GHz	6.7dB@10MHz 2.2dB@100MHz 2dB@1GHz 2.1dB@2GHz 2.3dB@3GHz 2.4dB@4GHz 2.5dB@5GHz 2.7dB@6GHz 2.8dB@7GHz 3.1dB@8GHz 3.5dB@9GHz 3.9dB@10GHz	11dBm@10MHz 13dBm@100MHz 13dBm@1GHz 13dBm@2GHz 13dBm@3GHz 13dBm@4GHz 13dBm@5GHz 13dBm@6GHz 12dBm@7GHz 11dBm@8GHz 10dBm@9GHz 9dBm@10GHz	24dBm@10MHz 23dBm@100MHz 22dBm@1GHz 22dBm@2GHz 22dBm@3GHz 22dBm@4GHz 22dBm@5GHz 22dBm@6GHz 22dBm@7GHz 22dBm@8GHz 22dBm@9GHz 22dBm@10GHz	52mA On-chip bias	Ultra-broadband Low noise Good flatness Can be used to replace ADM-8095 ADM-8625 modules
ZK04-BM	100k-4GHz	21dB@100kHz 21dB@5MHz 20dB@10MHz 19dB@100MHz 15.5dB@1GHz 12dB@2GHz 9dB@3GHz 7dB@4GHz	2.3dB@10MHz 1dB@100MHz 0.7dB@1GHz 0.7dB@2GHz 0.7dB@3GHz 1dB@4GHz	12dBm@10MHz 15dBm@100MHz 16dBm@1GHz 16dBm@2GHz 17dBm@3GHz 16dBm@4GHz	17dBm@10MHz 18dBm@100MHz 18dBm@1GHz 18dBm@2GHz 19dBm@3GHz 20dBm@4GHz	Charging  210mA, Total  215mA, Battery life  20 hours.	ultra-low power， low noise Can be used to replace SPF5189Z,SPF5043Z modules
ZK05-BM	100k-6GHz	25 dB@100kHz 25dB@5MHz 24dB@10MHz 23dB@100MHz 21.5dB@1GHz 19.5dB@2GHz 18.5dB@3GHz 17dB@4GHz 15dB@5GHz 12.5dB@6GHz	1.9dB@10MHz 1dB@100MHz 0.6dB@1GHz 0.7dB@2GHz 0.7dB@3GHz 0.9dB@4GHz 1.1dB@5GHz 1.7dB@6GHz	16dBm@10MHz 18dBm@100MHz 18dBm@1GHz 18dBm@2GHz 18dBm@3GHz 17dBm@4GHz 15dBm@5GHz 13dBm@6GHz	23dBm@10MHz 24dBm@100MHz 25dBm@1GHz 22dBm@2GHz 21dBm@3GHz 20dBm@4GHz 15dBm@5GHz 13dBm@6GHz	Charging  210mA, Total  230mA, Battery life  12 hours.	low power， Broadband, Low Noise Can be used to replace TQP3M9035,QPL9058 TQP3M9037,QPL9547 modules
ZK06-BM	10M-6GHz	2dB@100kHz 21dB@5MHz 25.5dB@10MHz 24.5dB@100MHz 21.5dB@1GHz 21dB@2GHz 20dB@3GHz 19.5dB@4GHz 19dB@5GHz 18dB@6GHz	2.3dB@10MHz 0.8dB@100MHz 0.6dB@1GHz 0.7dB@2GHz 0.7dB@3GHz 0.7dB@4GHz 0.8dB@5GHz 1.0dB@6GHz	16dBm@10MHz 12dBm@100MHz 18dBm@1GHz 18dBm@2GHz 18dBm@3GHz 18dBm@4GHz 17dBm@5GHz 16dBm@6GHz	26dBm@10MHz 31dBm@100MHz 31dBm@1GHz 30dBm@2GHz 31dBm@3GHz 28dBm@4GHz 27dBm@5GHz 24dBm@6GHz	Charging  210mA, Total  250mA, Battery life  6 hours.	Broadband, low noise Good flatness in the 1-6 GHz range Recommended for use as tinySA ULTRA 5.8GHz preamplifier Can be used to replace QPL9503,QPL9504 modules
ZK07-BM	30M-6GHz	28dB@5MHz 42dB@10MHz 42dB@100MHz 37dB@1GHz 36dB@2GHz 34dB@3GHz 35dB@4GHz 32dB@5GHz 29dB@6GHz	2.4dB@10MHz 0.9dB@100MHz 0.7dB@1GHz 0.8dB@2GHz 0.8dB@3GHz 0.8dB@4GHz 1.0dB@5GHz 1.2dB@6GHz	1dBm@10MHz 10dBm@100MHz 10dBm@1GHz 12dBm@2GHz 11dBm@3GHz 11dBm@4GHz 8dBm@5GHz 6dBm@6GHz	22dBm@10MHz 25dBm@100MHz 22dBm@1GHz 23dBm@2GHz 20dBm@3GHz 22dBm@4GHz 15dBm@5GHz 12dBm@6GHz	Charging  210mA, Total  270mA, Battery life  6 hours.	Broadband, low noise High gain, For long cable loss compensation,  place the amplifier near the antenna, not directly at the receiver's input.
ZK08-BM	50M-8GHz	32dB@10MHz 40dB@100MHz 36dB@1GHz 37dB@2GHz 37dB@3GHz 35dB@4GHz 33dB@5GHz 32dB@6GHz 29dB@7GHz 24dB@8GHz	6.9dB@10MHz 2.3dB@100MHz 2.1dB@1GHz 2.2dB@2GHz 2.4dB@3GHz 2.6dB@4GHz 2.6dB@5GHz 2.9dB@6GHz 3.0dB@7GHz 3.3dB@8GHz	1dBm@10MHz 9dBm@100MHz 9dBm@1GHz 13dBm@2GHz 11dBm@3GHz 11dBm@4GHz 7dBm@5GHz 4dBm@6GHz 3dBm@7GHz 2dBm@8GHz	22dBm@10MHz 25dBm@100MHz 22dBm@1GHz 23dBm@2GHz 20dBm@3GHz 22dBm@4GHz 15dBm@5GHz 12dBm@6GHz 8dBm@7GHz 8dBm@8GHz	Charging  210mA, Total  280mA, Battery life  5 hours.	Broadband, low noise High gain, For long cable loss compensation, place the amplifier near the antenna, not directly at the receiver's input.
ZK09-BM	100k-10GHz	21dB@100kHz 21.5dB@5MHz 21.5dB@10MHz 21.5dB@100MHz 21.5dB@1GHz 21dB@2GHz 21dB@3GHz 20dB@4GHz 18.5dB@5GHz 17.5dB@6GHz 16.5dB@7GHz 15dB@8GHz 14dB@9GHz 13dB@10GHz	6.7dB@10MHz 2.2dB@100MHz 2dB@1GHz 2.1dB@2GHz 2.3dB@3GHz 2.4dB@4GHz 2.5dB@5GHz 2.7dB@6GHz 2.8dB@7GHz 3.1dB@8GHz 3.5dB@9GHz 3.9dB@10GHz	11dBm@10MHz 13dBm@100MHz 13dBm@1GHz 13dBm@2GHz 13dBm@3GHz 13dBm@4GHz 13dBm@5GHz 13dBm@6GHz 12dBm@7GHz 11dBm@8GHz 10dBm@9GHz 9dBm@10GHz	24dBm@10MHz 23dBm@100MHz 22dBm@1GHz 22dBm@2GHz 22dBm@3GHz 22dBm@4GHz 22dBm@5GHz 22dBm@6GHz 22dBm@7GHz 22dBm@8GHz 22dBm@9GHz 22dBm@10GHz	Charging  210mA, Total  260mA, Battery life  5 hours.	Ultra-broadband Low noise Good flatness Can be used to replace ADM-8095 ADM-8625 modules

PRUEBAS

Se prueba un modelo ZK04-BM (100 kHz-4 GHz) con bateria

nanoVNA

OFF (No dispone de relé por lo que en caso de apagarse debe desconectarse)

De 150 kHz a 1,5 MHz la ganancia es ligeramente superior a 11 dB (RF AMP04 13-14 dB)

De 1,5 MHz a 15 MHz la ganancia va de 11,5 a 13,5 dB (RF AMP04 14-15 dB) con una brecha de -2,6 dB en 6,7 MHz

De 15 MHz a 150 MHz la ganancia va de 13,5 a 15 dB (RF AMP04 15,5-17 dB) 

De 150 MHz a 1,5 gHz la ganancia va de 15 a 25 dB (RF AMP04 17-28 dB) con una brecha de 2,54 dB en892 MHz

Desconectada la alimentación de forma que trabaja con la bateria no se ha visto ningun cambio en las curcvas de respuesta.

Presenta pues unas características similares al RF AMP04 incluidas las brechas y aparentemente mejor que RF AMP02, pero recordemos que en la practica nos decantamos por este ultimo ante la inutilidad del primero por el ruido.

De nuevo en las pruebas prácticas con WSPR no compensa su instalación.