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Date Posted: Wed 21 Apr 2004; 2:12am
Author: Wan
Subject: RF issues

Hi, I'm trying to create a 'wireless direction finding' in which I need to find a hidden transmitter at 433MHz.

The problem I'm facing is that for my receiver, I would need to have a phase comparator that will compare 2 signals of 433 MHz from 2 different antennas and obtain an output of the phase difference from both signals. Is there a way to create such phase comparator that will work for 433MHz or a place to just buy them?

Another issues is that, before i input the 2 signals, first I would need pass it through bandpass filters and then amplify it right? What types of amplifiers and bandpass filters I'm looking for? I've read about all these types A, B, C,etc. but not sure which one to use.

I'm really new in this area. Any good books suggestion that I can do my research to try to understand it?

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