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Communications device with direct cellular-to-collocated device communication channel interface

  • US 9,179,428 B2
  • Filed: 06/26/2013
  • Issued: 11/03/2015
  • Est. Priority Date: 06/26/2013
  • Status: Active Grant
First Claim
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1. A communications device, comprising:

  • a crystal oscillator module configured to generate a clock signal and a temperature sensor signal indicative of temperature in proximity of the crystal oscillator module; and

    a multi-chip module (MCM) comprising;

    a cellular radio frequency (RF) integrated circuit (RFIC) module;

    a Global Navigation Satellite System (GNSS) module; and

    clock circuitry configured to;

    receive the clock signal and the temperature sensor signal from the crystal oscillator module,utilize the temperature sensor signal as an index for a lookup table to retrieve a frequency correction,apply the frequency correction to the clock signal to generate a temperature compensated clock signal, andprovide the temperature compensated clock signal to the cellular RFIC module and the GNSS module.

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