31-12-2022, 07:09 PM
Roger
Refer post #3 above for LO level and stage gain determination, however one of the MMICs in each path was replaced by a capacitor on that board layout so use 0dB gain/loss for that stage.
There are better products now-adays (and available) than the SNA586 and because they are all based on 50 ohm in/out, changing to a more modern MMIC in the same package style is as simple as changing the series bias resistor to the output pin of the MMIC.
Have fun. HNY
Doug
Refer post #3 above for LO level and stage gain determination, however one of the MMICs in each path was replaced by a capacitor on that board layout so use 0dB gain/loss for that stage.
There are better products now-adays (and available) than the SNA586 and because they are all based on 50 ohm in/out, changing to a more modern MMIC in the same package style is as simple as changing the series bias resistor to the output pin of the MMIC.
Have fun. HNY
Doug
Doug VK4ADC @ QG62LG51
http://www.vk4adc.com
This Forum is only going to be as interesting as the posts it contains.
If you have a comment or question, post it as it may trigger or answer the query in someone else's mind.
http://www.vk4adc.com
This Forum is only going to be as interesting as the posts it contains.
If you have a comment or question, post it as it may trigger or answer the query in someone else's mind.