Patent ID: 9647638
Date: 2017-05-09
CPC Classifications: H03H,H04B

Claim:
1. A method of minimizing transmit signal interference, comprising: receiving a signal; amplifying the received signal; mixing the received signal with an intermediate frequency signal to obtain a baseband modulated signal; filtering the baseband modulated signal in a first filter; dividing the first filtered baseband modulated signal by a preselected amount; sending a first divided portion of the baseband modulated signal to a main path of a biquad filter, producing a first biquad filtered signal; sending a second divided portion of the baseband modulated signal to an auxiliary path of the biquad filter, producing a second biquad filtered signal; recombining the first biquad filtered signal with the second biquad filtered signal before a second stage of the biquad filter; and filtering the recombined biquad filtered signal in the second stage of the biquad filter.