Harmonic and subharmonic filter

Details Harmonic and subharmonic filter Harmonic and subharmonic filter

1991-09-12

1993-02-16

Dzierzynski, Paul M.

Wave transmission lines and networks

Coupling networks

Frequency domain filters utilizing only lumped parameters

333175, 333 99PL, H03H 707

Patent

active

051874571

ABSTRACT:
A harmonic and subharmonic filter is coupled between a high power RF energy source and a non-linear RF load via a matching network, such as a plasma chamber. The filter passes high power RF energy in a band centered on a predetermined radio frequency, i.e., 13.56 MHz, but blocks and attenuates out-of-band energy at frequencies which are multiples of or fractions of the predetermined frequency. The harmonic and subharmonic filter comprises an input terminal, an output terminal, a series LC resonance path connected between the input and output terminals, and tuned to the predetermined radio frequency, a series resistive path formed of first and second resistors, and a parallel LC resonance path between the junction of the two resistors and ground.

REFERENCES:
patent: 3569846 (1971-03-01), Matsuura
patent: 4375051 (1983-02-01), Theall
patent: 4383203 (1983-05-01), Stanley
patent: 4629940 (1986-12-01), Gagne et al.
patent: 4679007 (1987-07-01), Reese et al.
H. Paul Shuth, "Interstage 50-Ohm Terminator for VHF Converters"Ham Radio, Feb. 1988.
Matthew Fivash, "Dissipative Filters", RF Design, Oct. 1988, pp. 73-83.

Affiliated with

Also associated with

Rating

Harmonic and subharmonic filter does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Harmonic and subharmonic filter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Harmonic and subharmonic filter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2150424