H03J3/28 - CPC Classification Index

ClassID:

221182 ⎘

H03J3/28 - CPC Classification

Classification description:

Continuous tuning of more than one resonant circuit simultaneously, the tuning frequencies of the circuits having a substantially constant difference throughout the tuning range

Sub-classes:

H03J3/30 » Arrangements for ensuring tracking with variable inductors 1
H03J3/32 » Arrangements for ensuring tracking with variable capacitors 7

Recent Application in this class:

20180248518

2018-08-30

Optoelectronic oscillator with tunable filter

20150229419

2015-08-13

Semiconductor device and signal processing method thereof

20140241475

2014-08-28

Semiconductor device and signal processing method thereof

20130242204

2013-09-19

Semiconductor device and signal processing method thereof

20100190458

2010-07-29

Method of tuning receiver having tunable amplifier with integrated tracking filter

20080171524

2008-07-17

Receiver having tunable amplifier with integrated tracking filter

20050032492

2005-02-10

High frequency receiving device, integrated circuit used for the same, and TV receiver using them

20050003773

2005-01-06

Multiple conversion tuner

17960990

2023-08-15

Tuning methods for digital hybrid load pull system

#10

16838786

2024-01-02

Digital hybrid load pull system