Ok i need some help i think this is my first post. I've lurked around for a while before but now i just need some help on doing a brute radar detector.
I already own a whistler pro 78 for ~3yrs and a passport 9500IX (if thats right) for about 6months.... but i need to make a project on a radar detector.
Basically i am using multisim 10 and have only found one schematic that looks like it might work. here's the link: http://www.high-voltage-lab.com/105/...radar-detector
The problem here is in multisim i can't find an antenna simulation so i would have to use a) a ferrite bar component, b) an inductor coil or c) make my own.
I am barely learning this so the radio thing is still not completely there. The schematic assumes that a regular antenna is used inside the radar, but i do not know specifically how the radar detectors antenna works.
My second problem is arranging the circuit so that it works with a 12V i.e car battery since its set up to a 9v which would not work.
I need to set my circuit so that it can detect atleast one band but i was shooting for x, k, ka. I think by swithching the potentiometer one can change the frequency it picks up.
Problem is im not completely sure how to simulate a radar gun wave going to a radar detector?
i was hooking up an oscillator to the would be antenna and going from there but i realize that i was getting to high a voltage. The ocillator is set at 100Vpeak (amplitude) and the freq. to say 34ghz(ka) but the last amplifier produces an output of KILOvolts which im guessing would fry my speaker which alarms of a band.
here's what i have right now. attached any help would be much appreciated. I am trying to look at all the math that goes into each op amp setting and try to solve these problems.
A very important question i had is: when the wave of the gun is in the air say Ka at what amplitude would that reach the antenna? the amplitude would be vpeak and im guessing it has to be something very small perhaps around 50mV ?
i am still doing research but i just want some input on this thanks for the help.