US20020000874 Band pass filter with improved group delay

Settings

Stemming

Single Family Member

Include NPL

Feedback

Goto Application

Office

United States of America

Application Number 09492015

Application Date 26.01.2000

Publication Number 20020000874

Publication Date 03.01.2002

Grant Number 6404279

Grant Date 11.06.2002

Publication Kind B2

IPC

CPC

Applicants Acoustic Technologies, Inc.

Inventors Thomasson, Samuel L.

Agents Wille, Paul F.

Priority Data 09492015 26.01.2000 US

Title

(EN) Band pass filter with improved group delay

Abstract

(EN)

An electrical signal is applied to a band pass filter, a first notch filter, and a second notch filter in any order. The center frequencies of the notch filters straddle the pass band of the band pass filter. The notch filters improve group delay and steepen the skirts of the response curve of the band pass filter.

H	ELECTRICITY
03	BASIC ELECTRONIC CIRCUITRY
K	PULSE TECHNIQUE
5	Manipulation of pulses not covered by one of the other main groups of this subclass

H	ELECTRICITY
03	BASIC ELECTRONIC CIRCUITRY
H	IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
11	Networks using active elements
02	Multiple-port networks
04	Frequency selective two-port networks

H	ELECTRICITY
03	BASIC ELECTRONIC CIRCUITRY
H	IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
11	Networks using active elements
02	Multiple-port networks
04	Frequency selective two-port networks
12	using amplifiers with feedback

H	ELECTRICITY
03	BASIC ELECTRONIC CIRCUITRY
H	IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
17	Networks using digital techniques
02	Frequency-selective networks
04	Recursive filters

H	ELECTRICITY
03	BASIC ELECTRONIC CIRCUITRY
H	IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
19	Networks using time-varying elements, e.g. N-path filters

Processing

National Phase Entries

Authority File

Settings

Feedback

Goto Application

1. US20020000874 - Band pass filter with improved group delay