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Two kinds of eliminating AM broadcast band interference filt

2015-01-29 13:14  
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Two kinds of eliminating AM broadcast band interference filters circuit
In order to overcome the impact of AM break, several different measures can be used. Among them, the direct conversion receiver is well isolated to eliminate the antenna effect in the circuit conductors. Even so, coaxial cable can be used between the DCR printed circuit board and the antenna connector. Despite of the isolation methods which do not influence the signal on antenna itself, the input signal should be subject to at least a few LC filter network. Filter network can be not only a band-pass filter which can pass certain frequency through the spectrum but can limit other frequencies, but also can be tuned into a single frequency.