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Single Ended and Differential Passive RF Impedance Tuners for 2.4 GHz ISM Band Applications
Abhishek Kumar,
Published in Institute of Electrical and Electronics Engineers Inc.
2019
Volume: 2019-August
   
Pages: 826 - 829
Abstract
This paper presents the design of two electronically tunable passive RF impedance tuners operating between 2.4 GHz and 2.5 GHz. Theoretical analysis and simulation were performed on two pi matching networks in cascade which helped in increasing the load voltage standing wave ratio (VSWR) coverage. The linearity of the optimized single ended matching network was improved by converting it into a differential structure. Both the impedance tuners based on this theory were fabricated on a two layered FR4 PCB. The fabricated single ended tuner was tested for load impedance variation up to VSWR ≤ 9.5 wherein insertion loss stayed between 0.4 dB and 5.1 dB. The differential network was tested for load impedances up to VSWR ≤ 6 wherein an insertion loss between 0.6 dB and 6.1 dB was obtained. The measured IIP3 of the differential and single ended networks were 37.4 dBm and 34.2 dBm respectively. © 2019 IEEE.
About the journal
JournalData powered by TypesetMidwest Symposium on Circuits and Systems
PublisherData powered by TypesetInstitute of Electrical and Electronics Engineers Inc.
ISSN15483746
Open AccessNo
Concepts (11)
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    Insertion losses
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    POLYCHLORINATED BIPHENYLS
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    Analysis and simulation
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    DIFFERENTIAL NETWORK
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    DIFFERENTIAL STRUCTURE
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    ELECTRONICALLY TUNABLE
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    IIP3
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    PI MATCHING NETWORK
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    Return loss
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    SMITH CHART
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    Tuners