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1. (WO2017147684) GENERATING LOCAL OSCILLATOR SIGNALS IN A WIRELESS SENSOR DEVICE

Pub. No.:    WO/2017/147684    International Application No.:    PCT/CA2016/051463
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Wed Dec 14 00:59:59 CET 2016
IPC: H03B 5/08
H04B 1/40
Applicants: COGNITIVE SYSTEMS CORP.
Inventors: SINGH, Rahul
PACE, Trevor
MANKU, Tajinder
Title: GENERATING LOCAL OSCILLATOR SIGNALS IN A WIRELESS SENSOR DEVICE
Abstract:
In some aspects, a local oscillator includes a voltage controlled oscillator, a multi-stage frequency divider including first and second stages, and a duty-cycle converter. An output node of the voltage controlled oscillator is coupled to an input node of the first stage. An output node of the first stage is coupled to an input node of the second stage. The first stage is configured to output a first signal from one of a first plurality of signal paths, each configured to provide a signal having a distinct frequency. The second stage is configured to output a second signal from one of a second plurality of signal paths, each configured to provide a signal having a distinct frequency. An output node of the multi-stage frequency divider is coupled to an input node of the duty-cycle converter.