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  1. Electronics
  2. Volume: 4
  3. Issue: 2
  4. A 0.8–8 GHz Multi-Section Coupled Line Balun
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Volume: 7
Volume: 6
Volume: 5
Volume: 4
Issue: 4
Issue: 3
Issue: 2
Use of Three-Level Power Converters in Wind-Driven Permanent-Magnet Synchronous Generators with Unbalanced Loads
HMC-MAC Protocol for High Data Rate Wireless Sensor Networks
Unified Multi-Layer among Software Defined Multi-Domain Optical Networks (Invited)
An Improved Asymmetric Cascaded Multilevel D–STATCOM with Enhanced Hybrid Modulation
A Theoretical Study on the Operation Principle of Hybrid Solar Cells
A Flexible Power Electronics Configuration for Coupling Renewable Energy Sources
A 0.8–8 GHz Multi-Section Coupled Line Balun
Heterojunction Diodes and Solar Cells Fabricated by Sputtering of GaAs on Single Crystalline Si
Analysis of a Multilevel Dual Active Bridge (ML-DAB) DC-DC Converter Using Symmetric Modulation
Data-Throughput Enhancement Using Data Mining-Informed Cognitive Radio
Issue: 1
Volume: 3
Volume: 2
Volume: 1

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A 0.8–8 GHz Multi-Section Coupled Line Balun

Content Provider MDPI
Author Itapu, Srikanth Almalkawi, Mohammad Devabhaktuni, Vijay
Abstract In this work, we propose a wideband multi-section transforming coupled-line balun using near equal length transmission line elements. The resulting design is realized by cascading several coupled-lines with minimal discontinuities. The multi-section Chebyshev matching optimizes bandwidth at the expense of passband ripple. The proposed design delivers good impedance matching and consistent 180° phase shift over 0.8–8 GHz frequency spectrum. Furthermore, the need for vias in conventional balun designs is relaxed by replacing the short-circuited (SC) terminal by its equivalent dual open-circuited (OC) element. The proposed design is simulated, fabricated, and measured. Both simulated and measured results are in a good agreement, and show an input port matching of below −9.7 dB over the design bandwidth, with a maximum phase and amplitude imbalance of 2.1° and 0.9 dB, respectively.
File Size 1447936
Ending Page 282
Page Count 9
Starting Page 274
File Format PDF
e-ISSN 20799292
DOI 10.3390/electronics4020274
Journal Electronics
Issue Number 2
Volume Number 4
Language English
Publisher Date 2015-04-30
Access Restriction Open
Subject Keyword balun Chebyshev coupled-line multi-section stepped impedance wideband
Content Type Text
Resource Type Article
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