US 12,323,101 B2
Phase locked oscillator and method
Charles William Tremlett Nicholls, Ottawa (CA); and Daniel Raymond Grise, Ottawa (CA)
Assigned to Nanowave Inc., Etobicoke (CA)
Appl. No. 18/551,908
Filed by Nanowave Technologies Inc., Etobicoke (CA)
PCT Filed Mar. 28, 2022, PCT No. PCT/CA2022/050461
§ 371(c)(1), (2) Date Sep. 22, 2023,
PCT Pub. No. WO2022/198339, PCT Pub. Date Sep. 29, 2022.
Claims priority of provisional application 63/166,560, filed on Mar. 26, 2021.
Prior Publication US 2024/0171126 A1, May 23, 2024
Int. Cl. H03B 5/04 (2006.01); H03L 7/099 (2006.01)
CPC H03B 5/04 (2013.01) [H03L 7/099 (2013.01); H03B 2200/009 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An oscillator, comprising:
an oscillator input port for receiving a reference signal;
an oscillator output port for outputting an oscillator output;
an unlocked oscillator configured to oscillate in an unlocked state and output at a resonance frequency configured to drift in response to changes in an operating environment, and a phase locked loop (PLL), comprising:
a mixer having an output port configured to output the unlocked oscillator output mixed with an output of a local oscillator, the mixer output port being in communication with a phase frequency detector and the oscillator output port, and
the phase frequency detector being configured to generate a control signal based on a detected phase difference between the reference signal and the mixer output;
wherein the control signal adjusts the local oscillator output to compensate for the resonance frequency drift of the unlocked oscillator when mixed with the unlocked oscillator output;
wherein the local oscillator has a tuning bandwidth selected to span a drift bandwidth of the unlocked oscillator.