ktr
Full Member level 3
Hello all,
I want to design a Power Detector to compensate for any temperature changes in my Tx design; I looked at analog.com and LT as previously advised; but their Detectors (eg LTC5536) requires a reference voltage which I don't fully grasp. I can design a good regulator for the reference voltage for detector's input; but even so, it seems I would also need a seperate voltage detector for the Power detector's output.
What I want is to couple my Output signal with a 17-20db coupler(I have it already); then feed into my detector circuit; so if with temperature changes I should know to whether to increase or decrease my signal strengths depending on application. I am planning to control the signal strength with a variable attenuator with SPI. So a more basic solution then using Power Detector + Voltage Detector would be preferable for me; if it exists. My band is narrow; as its in Tx + coupler, not Rx.
This is for Tx side not Rx side; so high dynamic range is not as big of an issue as it would be on Rx.
Any advice on how to tackle this problem?
I want to design a Power Detector to compensate for any temperature changes in my Tx design; I looked at analog.com and LT as previously advised; but their Detectors (eg LTC5536) requires a reference voltage which I don't fully grasp. I can design a good regulator for the reference voltage for detector's input; but even so, it seems I would also need a seperate voltage detector for the Power detector's output.
What I want is to couple my Output signal with a 17-20db coupler(I have it already); then feed into my detector circuit; so if with temperature changes I should know to whether to increase or decrease my signal strengths depending on application. I am planning to control the signal strength with a variable attenuator with SPI. So a more basic solution then using Power Detector + Voltage Detector would be preferable for me; if it exists. My band is narrow; as its in Tx + coupler, not Rx.
This is for Tx side not Rx side; so high dynamic range is not as big of an issue as it would be on Rx.
Any advice on how to tackle this problem?