Abstract: A first link disposed in a first capacitive channel (path) and a second link disposed in a second capacitive channel (path) of a communication system support conveyance of a respective differential signal from the first communication circuit to the second communication circuit of the communication system during a non-test mode. A controller controls the communication system to temporarily operate in a test mode to facilitate communications in the non-test mode. For example, while in the test mode, the controller determines adjustment settings in which to apply to an impedance adjustment circuit of the communication system to provide better RLC matching of the first capacitive channel and the second capacitive channel. Subsequent to the test mode and calibration, application of the adjustments to the first capacitive channel and the second capacitive channel reduce effects of a parasitic capacitance mismatch associated with at least the first link and the second link.

Abstract: An example apparatus as discussed herein includes a first communication circuit and a second communication circuit. A communication link couples the first communication circuit and the second communication circuit. The communication link conveys signals between the first communication circuit and the second communication circuit. The first communication circuit includes a first active inductor set to a first inductance; the first inductance controls a resonant frequency (carrier frequency) of communicating signals from the first communication circuit. The second communication circuit includes a second active inductor set to a second inductance. The second inductance controls a frequency response (such as band-pass resonant frequency) of a band-pass filter in the second communication circuit. The setting of the first inductance and the second inductance aligns the resonant frequency of the transmitted signals with respect to a peak or center frequency passed by the band-pass filter.

Abstract: An example apparatus as discussed herein includes a first communication circuit and a second communication circuit. A communication link couples the first communication circuit and the second communication circuit. The communication link conveys signals between the first communication circuit and the second communication circuit. The first communication circuit includes a first active inductor set to a first inductance; the first inductance controls a resonant frequency (carrier frequency) of communicating signals from the first communication circuit. The second communication circuit includes a second active inductor set to a second inductance. The second inductance controls a frequency response (such as band-pass resonant frequency) of a band-pass filter in the second communication circuit. The setting of the first inductance and the second inductance aligns the resonant frequency of the transmitted signals with respect to a peak or center frequency passed by the band-pass filter.