Patent ID: 8428526

Claim:
A method for tuning an analog baseband filter in a wireless receiver using a wireless transmitter co-located with the wireless receiver, the wireless receiver having an analog-to-digital (ADC) at an output of the analog baseband filter, the method comprising: coupling a first radio frequency (RF) signal generated by the wireless transmitter at an input of the wireless receiver, the first radio frequency (RF) signal having a desired frequency; measuring a reference value, comprising; injecting a direct current (DC) signal with an appropriate magnitude into the wireless transmitter; coupling a second radio frequency (RF) signal generated by the wireless transmitter at the input of the wireless receiver, wherein the second radio frequency (RF) signal is resultant from the DC signal; and measuring a magnitude of the coupled first radio frequency (RF) signal at an output of the ADC, wherein the magnitude is measured at the desired frequency; and adjusting a corner frequency of the filter in response to the determining that the measured magnitude differs from a specified value.