Design of Cavity-Backed Wideband Circularly Polarized Multi-Feed Slot Antenna and its Array
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Yong-Jin Hu
,
Wei-Ping Ding
Abstract
A wideband circularly polarized (CP) slot antenna array is presented by employing cavity-backed CP multi-feed slot antenna as the element. The antenna element consists of four microstrip-fed circular stubs that excite the circular slot to generate circular polarization, a circular back cavity and a separate corporate feed network layer. The measured 3-dB axial-ratio (AR) bandwidth of the element is 38.6% (4.6–6.8 GHz) in which the reflection coefficient (|S11|) is below −10 dB. The investigation is extended to a 2 × 2 antenna array by using sequentially rotated technique. Wilkinson power dividers are applied to design the feed network of the array. The fabricated antenna array can provide a 1-dB AR bandwidth of 55.7% (4.4–7.8 GHz). In the 1-dB AR bandwidth, the |S11| is below −10 dB and the gain is more than 10.0 dBic. The 3-dB gain bandwidth is about 40.0% (4.8–7.2 GHz) with the maximum gain 15.1 dBic.
©2014 by Walter de Gruyter Berlin/Boston
Articles in the same Issue
- Frontmatter
- Design of Cavity-Backed Wideband Circularly Polarized Multi-Feed Slot Antenna and its Array
- Dual Polarized Notch-etched Circular Patch Antenna Loaded with Metamaterial Structure
- Novel Dual-band Slot Antenna Design for Bluetooth and UWB Applications
- A Triple-band Bandpass Filter using Tri-section Step-impedance and Capacitively Loaded Step-impedance Resonators for GSM, WiMAX, and WLAN systems
- A Differential CMOS Common-Gate LNA Linearized by Cross-Coupled Post Distortion Technique
- A Wideband Noise-canceling CMOS LNA Using Cross-coupled Feedback and Bulk Effect
- Simulation Model for DVB-SH Systems Based on OFDM for Analyzing Quasi-error-free Communication over Different Channel Models
- Resource Allocation with Dynamic Carrier Assignment in Wireless Networks
- Performance Analysis of Two-Way OFDM Relay Systems with Ordered Subcarrier Pairing
- Stackelberg Game Based Power Allocation for Physical Layer Security of Device-to-device Communication Underlaying Cellular Networks
Articles in the same Issue
- Frontmatter
- Design of Cavity-Backed Wideband Circularly Polarized Multi-Feed Slot Antenna and its Array
- Dual Polarized Notch-etched Circular Patch Antenna Loaded with Metamaterial Structure
- Novel Dual-band Slot Antenna Design for Bluetooth and UWB Applications
- A Triple-band Bandpass Filter using Tri-section Step-impedance and Capacitively Loaded Step-impedance Resonators for GSM, WiMAX, and WLAN systems
- A Differential CMOS Common-Gate LNA Linearized by Cross-Coupled Post Distortion Technique
- A Wideband Noise-canceling CMOS LNA Using Cross-coupled Feedback and Bulk Effect
- Simulation Model for DVB-SH Systems Based on OFDM for Analyzing Quasi-error-free Communication over Different Channel Models
- Resource Allocation with Dynamic Carrier Assignment in Wireless Networks
- Performance Analysis of Two-Way OFDM Relay Systems with Ordered Subcarrier Pairing
- Stackelberg Game Based Power Allocation for Physical Layer Security of Device-to-device Communication Underlaying Cellular Networks
