Miniaturized Broadband Antenna Combining Fractal Patterns and Self-Complementary Structures for UWB Applications
スポンサーリンク
概要
- 論文の詳細を見る
Miniaturized broadband antennas combining a fractal pattern and a self-complementary structure are demonstrated for UWB applications. Using four kinds of fractal patterns generated with an octagon initiator, similar to a self-complementary structure, we investigate the effect of the fractal pattern on broadband performance. The lower band-edge frequency of the broad bandwidth is decreased by the reduced constant input impedance, which is controlled by the vacant area size inside the fractal pattern. The reduced constant input impedance is shown to be produced by the extended current distribution flowing along the vacant areas. Given the results, miniaturized broadband antennas, impedance-matched to 50Ω, are designed and fabricated. The measured return loss was better than 10dB between 2.95 and 10.7GHz with a size of 27×12.5mm. The lower band-edge frequency was reduced by 28% compared with the initiator.
著者
-
Honjo Kazuhiko
University Of Electro Communications
-
DIMITROV Vasil
University of Electro-Communica-tions
-
SAITOU Akira
University of Electro-Communica-tions
関連論文
- A Possible Simple Structure for Variable Microwave Inductors and Their Filter Applications(Microwaves, Millimeter-Waves)
- Distortion Compensation for Thermal Memory Effect on InGaP/GaAs HBT Amplifier by Inserting RC-Ladder Circuit in Base Bias Circuit
- InGaP/GaAs HBT MMIC Amplifier with Low Power Consumption and Low Noise Characteristics for Full-Band UWB Receiver Systems
- Synthesis for Negative Group Delay Circuits Using Distributed and Second-Order RC Circuit Configurations
- Accurate Distortion Prediction for Thermal Memory Effect in Power Amplifier Using Multi-Stage Thermal RC-Ladder Network(Active Devices/Circuits,Microwave and Millimeter-Wave Technology)
- InGaP/GaAs HBT MMIC Amplifier with Active Balun for Ultra-Wideband Self-Complementary Antenna(Active Circuits/Devices/Monolithic Microwave Integrated Circuits,Emerging Microwave Techniques)
- 77-GHz MMIC Module Design Techniques for Automotive Radar Applications(Recent Devices, Circuits, and Systems for Millimeter-wave ITS Applications)
- Microwave Class-F InGaP/GaAs HBT Power Amplifier Considering up to 7th-Order Higher Harmonic Frequencies(High-Speed HBTs and ICs,Heterostructure Microelectronics with TWHM2005)
- Experimental Verification of Lumped Element Circuit Synthesis Method for Class-F Microwave Amplifier Using InGaP/GaAs HBT(Microwaves, Millimeter-Waves)
- Ultra-Wideband, Differential-Mode Bandpass Filters with Four Coupled Lines Embedded in Self-Complementary Antennas(Electronic Circuits)
- Microwave-Circuit-Embedded Resin Printed Circuit Board for Short Range Wireless Interfaces(Recent Trends of Microwave and Millimeter-Wave Passive Circuit Components and Technologies for Improvement of Characteristics)
- Special Issue on Microwave and Millimeter Wave Technology
- C-2-42 Equivalent Circuit for InP CPW with Under-Bridge up to 50 GHz
- Recent Advances in Measurement Techniques for Microwave Active Devices and Circuits(Advances in Characterization and Measurement Technologies for Microwave and Millimeter-Wave Materials, Devices and Circuits)
- UWB Active Balun Design with Small Group Delay Variation and Improved Return Loss
- A Predistortion Diode Linearizer Technique with Automatic Average Power Bias Control for a Class-F GaN HEMT Power Amplifier
- Miniaturized Broadband Antenna Combining Fractal Patterns and Self-Complementary Structures for UWB Applications