H03H11/1278 - CPC Classification Index

ClassID:

220870 ⎘

H03H11/1278 - CPC Classification

Classification description:

Networks using active elements; Multiple-port networks; Frequency selective two-port networks using amplifiers with feedback using a single operational amplifier Modifications to reduce detrimental influences of amplifier imperfections, e.g. limited gain-bandwith product, limited input impedance

Recent Application in this class:

20240012497

INPUT/OUTPUT CAPACITANCE REDUCTION WITH NEGATIVE IMPEDANCE

20190149133

Tunable filter

20190068156

Methods and apparatuses for testing inductive coupling circuitry

20180248538

Tunable filter

20150229293

High-pass filter circuit and band-pass filter circuit

20150048881

Noise removing circuit and current sensing unit including the same

20090212855

FEEDBACK TECHNIQUE AND FILTER AND METHOD

20050162219

Active filter

15473602

Electronic device capable of bandwidth compensation and method thereof