US 11,942,952 B2
Low-noise oscillator amplitude regulator
Christian Elgaard, Lund (SE); and Lars Sundström, Lund (SE)
Assigned to TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Filed on Dec. 28, 2022, as Appl. No. 18/089,976.
Application 18/089,976 is a continuation of application No. 17/480,633, filed on Sep. 21, 2021, granted, now 11,552,641.
Application 17/480,633 is a continuation of application No. 16/862,084, filed on Apr. 29, 2020, granted, now 11,152,945, issued on Oct. 19, 2021.
Application 16/862,084 is a continuation of application No. 16/245,804, filed on Jan. 11, 2019, granted, now 10,673,441, issued on Jun. 2, 2020.
Application 16/245,804 is a continuation of application No. 15/577,973, granted, now 10,218,361, issued on Feb. 26, 2019, previously published as PCT/EP2016/060873, filed on May 13, 2016.
Application 15/577,973 is a continuation of application No. 14/731,487, filed on Jun. 5, 2015, granted, now 9,473,151, issued on Oct. 18, 2016.
Prior Publication US 2023/0134987 A1, May 4, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H03L 5/00 (2006.01); H03B 5/12 (2006.01)
CPC H03L 5/00 (2013.01) [H03B 5/1278 (2013.01); H03B 2201/031 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An electronic device comprising:
a first feedback circuit operatively connected to an amplitude detector and a first control input of an oscillator, the first feedback circuit configured to control an amplitude of an output of the oscillator by continuously applying a first control signal to the first control input in response to an amplitude detected by the amplitude detector; and
a second feedback circuit operatively connected to the amplitude detector and a second control input of the oscillator, the second feedback circuit configured to provide a second control signal to control two or more amplitude regulating parameters of the oscillator only at discrete times, the two or more amplitude regulating parameters comprising an oscillator bias current and a number of oscillator cells controlling transconductance of the oscillator.