US 12,308,824 B2
Resonator circuit using an inverter to adjust anti-resonance frequency
Douglas Jachowski, Santa Cruz, CA (US); and Gregory L. Hey-Shipton, Santa Barbara, CA (US)
Assigned to Murata Manufacturing Co., Ltd., Nagaokakyo (JP)
Filed by Murata Manufacturing Co., Ltd., Nagaokakyo (JP)
Filed on Apr. 1, 2022, as Appl. No. 17/712,011.
Application 17/712,011 is a continuation of application No. 16/700,158, filed on Dec. 2, 2019, granted, now 11,323,094.
Prior Publication US 2022/0231662 A1, Jul. 21, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H03H 9/205 (2006.01); H02M 7/44 (2006.01); H03H 7/01 (2006.01); H03H 9/64 (2006.01)
CPC H03H 9/205 (2013.01) [H02M 7/44 (2013.01); H03H 7/0161 (2013.01); H03H 9/6483 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A composite resonator comprising:
a resonator, exhibiting a resonance and an anti-resonance, the resonator having a first terminal and a second terminal; and
an inverter circuit connected in parallel with the resonator, the inverter circuit consisting of:
a T-node;
a first capacitor having a first terminal directly connected to the first terminal of the resonator without any passive components disposed therebetween, and further having a second terminal directly connected to the T-node;
a second capacitor having a first terminal directly connected to the second terminal of the resonator without any passive components disposed therebetween, and further having a second terminal directly connected to the T-node; and
an inductor directly connected between the T-node and a ground connection.