Design of Dispersive Delay Structures (DDSs) Formed by Coupled C-Sections Using Predistortion With Space Mapping

The concept of space mapping is applied, for the first time, to the design of microwave dispersive delay structures (DDSs). DDSs are components providing specified group delay versus frequency responses for real-time radio systems. The DDSs considered in this paper are formed by cascaded coupled C-s...

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Bibliographic Details
Published in:IEEE transactions on microwave theory and techniques 2013-12, Vol.61 (12), p.4040-4051
Main Authors: Qingfeng Zhang, Bandler, John W., Caloz, Christophe
Format: Article
Language:English
Subjects:
Accuracy
analog signal processing (ASP)
Applied sciences
Circuit properties
coupled C-sections
Couplings
Delay
Delays
Design engineering
Dispersion
dispersive delay structure (DDS)
Electric, optical and optoelectronic circuits
Electronic circuits
Electronics
Equations
Exact sciences and technology
Group delay
Joining
Mapping
Mathematical model
Microwaves
Oscillators, resonators, synthetizers
Predistortion
Real time
real-time radio
space mapping
Synthesis
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Summary:The concept of space mapping is applied, for the first time, to the design of microwave dispersive delay structures (DDSs). DDSs are components providing specified group delay versus frequency responses for real-time radio systems. The DDSs considered in this paper are formed by cascaded coupled C-sections. It is first shown that aggressive space mapping does not provide sufficient accuracy in the synthesis of DDSs. To address this issue, we propose a predistortion space mapping technique. Compared to aggressive space mapping, this technique provides enhanced accuracy, while compared to output space mapping, it provides greater implementation simplicity. Two full-wave and one experimental examples are provided to illustrate the proposed predistortion space mapping technique.
ISSN:0018-9480
1557-9670
DOI:10.1109/TMTT.2013.2287678