how to find the dynamic range of a power detector?

Status
Not open for further replies.

jpschew

Newbie level 4
Newbie level 4
Joined
Feb 6, 2013
Messages
5
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Location
Singapore
Activity points
1,307
Hi all

I'm new to cadence and would like to find the dynamic range for power detector. What kind of simulation should i use to get the dynamic range?
Attached is the schematic of the power detector.
 

Attachments

  • schematic.png
    schematic.png
    13.8 KB · Views: 128

Hi all

I'm new to cadence and would like to find the dynamic range for power detector. What kind of simulation should i use to get the dynamic range?
Attached is the schematic of the power detector.

I do not trust simulations. A RF detector must be tested to know its dynamic range.
The "bottom" is TSS, the tangential sensitivity tested with 1 kHz modulated signal and reading taken on an oscilloscope. The RF input for resolvable "noise" and "signal" levels is typically lower than -30 dBm. Load impedance is important as well as video bandwidth.

The "top" input power depends on what you need the response. Below -20 dBm, the detector response is "square-root" or output voltage linearly proportional to RF input power. Up to 0...+10 dBm the response is close to saturation, and above +13 dBm, Schottky-diode detectors reflect all RF power back, so it is tough to burn the diode.

Check detector makers like Herotek, Mini-Circuits and others, they show typical detector parameters,
 

Status
Not open for further replies.