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The Smallest Form Factor UWB Antenna with Quintuple Rejection Bands for IoT Applications Utilizing RSRR and RCSRR
MuhibUr Rahman1, Jung-Dong Park2
1Division of Electronics and Electrical Engineering, Dongguk University, Seoul 04620, Korea. muhib@dongguk.edu.
Sensors (Basel, Switzerland)
|March 23, 2018
Summary
This study introduces a compact ultra-wideband antenna with five rejection bands, ideal for wireless sensor networks and mobile devices. The novel design achieves high rejection at specific frequencies while maintaining broad bandwidth and good efficiency.
Area of Science:
- Electrical Engineering
- Electromagnetics
- Antenna Theory
Background:
- Ultra-wideband (UWB) antennas are crucial for high-speed wireless communication.
- Existing UWB antennas often suffer from interference at specific frequency bands, necessitating rejection capabilities.
- The demand for compact antennas with multiple frequency rejections is growing for applications like wireless sensor networks and mobile handsets.
Purpose of the Study:
- To design and analyze the smallest form factor microstrip-fed ultra-wideband antenna with quintuple rejection bands.
- To provide design guidelines for achieving notched bands at specific frequencies.
- To validate the antenna's performance through simulation and measurement.
Main Methods:
- Integration of four rectangular complementary split-ring resonators (RCSRRs) onto the radiating patch.
- Placement of two rectangular split-ring resonators (RSRRs) near the feedline-patch junction.
- Utilizing a conventional ultra-wideband antenna as the base design.
- Analysis of design parameters for targeted frequency rejections.
Main Results:
- Achieved five rejection bands at 3.5, 4.5, 5.25, 5.7, and 8.2 GHz.
- Demonstrated a wide impedance bandwidth from 3 to 11 GHz.
- Observed a nearly omnidirectional radiation pattern and good radiation efficiency across the operating band (excluding notched frequencies).
- Exhibited high rejection within the multiple notched bands.
Conclusions:
- The proposed antenna offers a compact solution for UWB applications requiring interference mitigation.
- The design effectively integrates multiple rejection bands without significantly compromising overall antenna performance.
- Simulated and measured results show good agreement, validating the antenna's design and functionality for wireless sensor networks, mobile handsets, and IoT devices.
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