Application of negative group delay active circuits to the design of broadband and constant phase shifters - Université de Bretagne Occidentale Access content directly
Journal Articles Microwave and Optical Technology Letters Year : 2008

Application of negative group delay active circuits to the design of broadband and constant phase shifters

Blaise Elysée Guy Ravelo
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Marc Le Roy
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André Pérennec
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Abstract

The new phase-shifter configuration described in this report uses a negative group delay (NGD) active circuit. In this topology, a classical transmission line is set in cascade with an NGD circuit whose phase slopes are alike, but opposite, to get a constant and broadband phase shift. The proposed approach was validated through the design and measurement of a phase shifter, which exhibited a constant phase of 90° +- 5° over a 75% relative bandwidth around 1.6 GHz. Moreover, as the group delay of the NGD circuit compensated the transmission line one, the overall circuit group delay was kept to a small value in the operating frequency band.

Domains

Electronics
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Dates and versions

hal-00468012 , version 1 (30-03-2010)

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Blaise Elysée Guy Ravelo, Marc Le Roy, André Pérennec. Application of negative group delay active circuits to the design of broadband and constant phase shifters. Microwave and Optical Technology Letters, 2008, 50 (12), pp.3079-3081. ⟨10.1002/mop.23883⟩. ⟨hal-00468012⟩
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