Abstract
In this research, a dual-band thin printed-circuit-board (PCB) microwave absorber has been proposed for applications in 2.4 and 5 GHz frequency bands. Each unit cell of the absorber consists of a square ring and a thick cross-dipole, augmented with the tuning elements. In the design process, numerical simulations were performed for the optimal characteristics of the absorber and an absorber prototype was fabricated using the simple print-transferring and etching process. The measured absorption bandwidths (50 %) of 170 MHz (2.36–2.53 GHz) and 830 MHz (5.09–5.92 GHz) were achieved for the first and second bands, respectively, with the wideband characteristic at the second operating band. The absorption rates near the center frequencies (2.45 and 5.5 GHz) were respectively 97.85 % and 97.76 %. The simulation and measured results are in good agreement. Furthermore, the incidence-angle dependencies of the absorber were of moderately wide angles with the absorption capacity of at least 50 % for both operating bands. The proposed absorber is suitable for a variety of applications requiring absorption in the 2.4/5 GHz bands.
References
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© 2017 Walter de Gruyter GmbH, Berlin/Boston
Articles in the same Issue
- Frontmatter
- Tunable Balanced Bandpass Filter with High Common-mode Suppression Based on SLSRs
- Compact Quad-Band Bandpass Filter Using Double-Diplexing Structure
- Seven-Port Unequal Power Divider with Broadband and Large Division Ratio Characteristics Based on T-shape Stub
- A Wilkinson Power Divider with Harmonics Suppression and Size Reduction Using Meandered Compact Microstrip Resonating Cells
- A 210 GHz Power-Combined Frequency Multiplying Source with Output Power of 23.8 mW
- Fractal Based Triple Band High Gain Monopole Antenna
- Wideband Monopole Fractal Heptagonal Antenna Implementation in X-Band Frequency Range
- A Compact SIW-Fed Dielectric Antenna with Equivalently Tapered E-plane Profile
- Dual Band Notched EBG Structure based UWB MIMO/Diversity Antenna with Reduced Wide Band Electromagnetic Coupling
- A Frequency Reconfigurable MIMO Antenna System for Cognitive Radio Applications
- A Practical Millimeter-Wave Holographic Imaging System with Tunable IF Attenuator
- A Two-Stage Space-Time Adaptive Processing Method for MIMO Radar Based on Sparse Reconstruction
- Simple and Low-Cost Dual-Band Printed Microwave Absorber for 2.4- and 5-GHz-Band Applications
- Overview of Sparse Graph for Multiple Access in Future Mobile Networks
- The Lightning Electromagnetic Pulse Coupling Effect Inside the Shielding Enclosure With Penetrating Wire
- The DLR Spaceborne SAR Calibration Center
- Electron Beam Misalignment Study of MIG for 42 GHz, 200 kW Gyrotron
Articles in the same Issue
- Frontmatter
- Tunable Balanced Bandpass Filter with High Common-mode Suppression Based on SLSRs
- Compact Quad-Band Bandpass Filter Using Double-Diplexing Structure
- Seven-Port Unequal Power Divider with Broadband and Large Division Ratio Characteristics Based on T-shape Stub
- A Wilkinson Power Divider with Harmonics Suppression and Size Reduction Using Meandered Compact Microstrip Resonating Cells
- A 210 GHz Power-Combined Frequency Multiplying Source with Output Power of 23.8 mW
- Fractal Based Triple Band High Gain Monopole Antenna
- Wideband Monopole Fractal Heptagonal Antenna Implementation in X-Band Frequency Range
- A Compact SIW-Fed Dielectric Antenna with Equivalently Tapered E-plane Profile
- Dual Band Notched EBG Structure based UWB MIMO/Diversity Antenna with Reduced Wide Band Electromagnetic Coupling
- A Frequency Reconfigurable MIMO Antenna System for Cognitive Radio Applications
- A Practical Millimeter-Wave Holographic Imaging System with Tunable IF Attenuator
- A Two-Stage Space-Time Adaptive Processing Method for MIMO Radar Based on Sparse Reconstruction
- Simple and Low-Cost Dual-Band Printed Microwave Absorber for 2.4- and 5-GHz-Band Applications
- Overview of Sparse Graph for Multiple Access in Future Mobile Networks
- The Lightning Electromagnetic Pulse Coupling Effect Inside the Shielding Enclosure With Penetrating Wire
- The DLR Spaceborne SAR Calibration Center
- Electron Beam Misalignment Study of MIG for 42 GHz, 200 kW Gyrotron