مرکز منطقه ای اطلاع رساني علوم و فناوري - Suggestion for a new formula to calculate Group-delay from frequency domain measurements

DocumentCode :

3165239

Title :

Suggestion for a new formula to calculate Group-delay from frequency domain measurements

Author :

Shapir, Itzhak

Author_Institution :

RAFAEL, Armament Dev. Authority Ltd., Haifa

fYear :

2006

fDate :

10-15 Sept. 2006

Firstpage :

1233

Lastpage :

1236

Abstract :

This paper presents a simple case study of a low Q band reject filter. Calculation based on phase derivative produces negative group-delay for this circuit. In the paper, a modified formula D_g = [(partA/A)/partomega)² + (partPhi/partomega)²)]^frac12 is suggested, based on a normalized derivative of the full complex transmission function T_(omega) = A_(omega))e ^-jPhi(omega). This formula produces positive delay for all frequencies, having a maximum value at resonance. For flat amplitude response, the formula converges to the classic formula D_g = partPhi/partomega

Keywords :

band-stop filters; delays; frequency-domain analysis; network analysis; flat amplitude response; frequency domain measurements; group-delay calculation; low Q band reject filter; modified formula; normalized derivative; phase derivative; positive delay; Analytical models; Circuit simulation; Distortion measurement; Filters; Frequency domain analysis; Frequency measurement; Microwave measurements; Propagation delay; Shape; Time measurement; Delay; filters; group-delay;

fLanguage :

English

Publisher :

ieee

Conference_Titel :

Microwave Conference, 2006. 36th European

Conference_Location :

Manchester

Print_ISBN :

2-9600551-6-0

Type :

conf

DOI :

10.1109/EUMC.2006.281200

Filename :

4058051

Link To Document :

https://search.ricest.ac.ir/dl/search/defaultta.aspx?DTC=49&DC=3165239