H03J3/00 - CPC Classification Index

ClassID:

221167 ⎘

H03J3/00 - CPC Classification

Classification description:

Continuous tuning

Sub-classes:

H03J3/02 » Details 16
H03J3/20 » of single resonant circuit by varying inductance only or capacitance only 207
H03J3/22 » of single resonant circuit by varying inductance and capacitance simultaneously 19
H03J3/24 » of more than one resonant circuit simultaneously, the circuits being tuned to substantially the same frequency, e.g. for single-knob tuning 18
H03J3/28 » of more than one resonant circuit simultaneously, the tuning frequencies of the circuits having a substantially constant difference throughout the tuning range 8

Recent Application in this class:

20220328964

2022-10-13

Antenna tuner for a beamforming antenna array

20190140626

2019-05-09

Tuning of Filters

20170272056

2017-09-21

Acoustic-wave device with active calibration mechanism

20170271743

2017-09-21

Acoustic-wave device with active calibration mechanism

20170250678

2017-08-31

Tuning of filters

20170179933

2017-06-22

Wireless power system tuning apparatus

20130293291

2013-11-07

Quality factor tuning for LC circuits

20130234807

2013-09-12

Cavity filter with resilient member connected between slider and driving device

20110204936

2011-08-25

Apparatus and methods for reducing noise in oscillating signals

#10

20110043080

2011-02-24

Complex resonance circuit and oscillation circuit using the same

#11

20080136542

2008-06-12

Composite resonance circuit and oscillation circuit using the circuit

#12

20060158273

2006-07-20

Micro-oscillator, semiconductor device and communication apparatus

#13

20050218973

2005-10-06

Bandwidth adaptation rule for adaptive noise filter for inverse filtering with improved disturbance rejection bandwidth and speed

#14

20050073369

2005-04-07

Phase-locked loop bandwidth calibration circuit and method thereof