Extended Bandwidth Microstrip Circular Patch Antenna for Dual Band Applications

<p>This paper presents a new wideband microstrip circular patch antenna (MCPA) fed by proximity-coupled line with double-stub matching to achieve dual-band operation. Bandwidth extension is achieved by exciting higher-order modes in the circular radiating patch, and using two stubs to achieve adequate matching across the obtained two bands. The characteristics of the antenna such as reflection coefficient, impedance bandwidth, gain and radiation pattern are investigated and optimized through parametric studies using the CST Microwave Studio Suite. The antenna achieved a large relative bandwidth of 45.16% at the upper band, while the lower one has 10.3% relative bandwidth. The maximum achieved gain of the dual-band antenna in the 5.8GHz band is 4.62dBi while it is 4.85dBi in the upper band. The antenna has an overall size of 30×30×3.2mm3 corresponding to 0.58λ × 0.58 λ × 0.062 λ at the lower band of 5.8 GHz. The proposed antenna should be useful for WLAN and X-band communication systems.</p>

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Dual- Band Antenna for Wi-Fi and 5G Applications

International Journal of Engineering and Advanced Technology - Regular Issue ◽

10.35940/ijeat.a1032.1291s52019 ◽

2019 ◽

Vol 9 (1S5) ◽

pp. 130-131

Keyword(s):

Circular Polarization ◽

Linear Polarization ◽

Patch Antenna ◽

Return Loss ◽

Axial Ratio ◽

Band Width ◽

Dual Band ◽

Circular Patch ◽

Dual Band Antenna ◽

Circular Patch Antenna

In this communication, a circular patch antenna is reported for dual- band operation based on VIAs. Initially the patch is resonating at single band with Linear Polarization (LP), and the Circular Polarization (CP) is obtained by inserting semi circular cuts at the edges of circular patch. The second band is achieved by loading the vertical metallic VIAs along the circumference of the patch antenna. The reported antenna is working at 2.4 GHz (Wi-Fi) and 3.5 GHz (5G) bands with Return Loss Band Width (RLBW) of 4.83% and 10.37% respectively. The Axial Ratio (AR) bandwidth at 5G band is 2.38% (3.31- 3.39 GHz)

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Dual Band Slotted Printed Circular Patch Antenna With Superstrate and EBG Structure for 5G Applications

Mehran University Research Journal of Engineering and Technology ◽

10.22581/muet1982.1901.19 ◽

2019 ◽

Vol 38 (1) ◽

pp. 227-238 ◽

Cited By ~ 1

Author(s):

Bismah Hasan ◽

Kamran Raza

Keyword(s):

Patch Antenna ◽

Ground Plane ◽

Dual Band ◽

Impedance Bandwidth ◽

Antenna Element ◽

Radiation Characteristics ◽

Circular Patch ◽

Feed Line ◽

Circular Patch Antenna ◽

Power Radiation

Slotted circular printed layered patch antenna is designed, simulated and fabricated for 5G (Fifth Generation) wireless communication applications. The antenna consists of slots in the main radiating circular patch element for miniaturizing the size of the radiating element and providing dual band radiation characteristics. The feed line is separated on bottom substrate layer with EBG (Electromagnetic Band-Gap) embedded for enhancing the gain characteristics of the antenna. Superstrate layer is also used for improving the gain of the antenna where the distance from the radiating antenna element is optimized for maximizing the impedance bandwidth and radiation characteristics. The feed realization and impedance matching of the radiating slotted circular patch antenna is done by inducing slot at the middle ground plane of the slot embedded circular patch antenna system. The proposed configuration provides power radiation gain values of more than 5 dB for the Ka band of communications, whereas the impedance bandwidth of the antenna is verified for the dual resonances at 27.5 and 28.5 GHz. Dual band radiation characteristics are attained by embedding and optimizing the slot length and width in the circular patch radiator element that is placed on the upper face of the substrate RT Rogers Duroid 5880 layer. The length of the microstrip feed line embedded in the lower layer of the substrate is optimized for providing required bandwidth characteristics for the dual frequency point radiations. The antenna configuration is designed, modeled and simulated in CST (Central Standard Time) Microwave studio. The antenna is fabricated and measured vs simulated frequency response, gain patterns and current density plots are presented for the verification of antenna operation in the desired frequency bands.

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Reconfigurable Monopolar Circular Patch Antenna for Wireless Communication Systems

Journal of Electromagnetic Waves and Applications ◽

10.1163/156939308784159426 ◽

2008 ◽

Vol 22 (5-6) ◽

pp. 635-642 ◽

Cited By ~ 1

Author(s):

T.-Y. Han ◽

C.-Y.-D. Sim

Keyword(s):

Wireless Communication ◽

Patch Antenna ◽

Communication Systems ◽

Wireless Communication Systems ◽

Circular Patch ◽

Circular Patch Antenna

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Beamwidth-Enhanced Low-Profile Dual-Band Circular Polarized Patch Antenna for CNSS Applications

International Journal of Antennas and Propagation ◽

10.1155/2019/7630815 ◽

2019 ◽

Vol 2019 ◽

pp. 1-13 ◽

Cited By ~ 1

Author(s):

Hongmei Liu ◽

Chenhui Xun ◽

Shaojun Fang ◽

Zhongbao Wang

Keyword(s):

Patch Antenna ◽

Ground Plane ◽

Axial Ratio ◽

Dual Band ◽

Impedance Bandwidth ◽

Coupled Line ◽

Low Profile ◽

Feed Network ◽

Single Input ◽

Half Power

A low-profile dual-band circular polarized (CP) patch antenna with wide half-power beamwidths (HPBWs) is presented for CNSS applications. Simple stacked circular patches are used to achieve dual-band radiation. To enhance the HPBW for the two operation bands, a dual annular parasitic metal strip (D-APMS) combined with reduced ground plane (R-GP) is presented. A single-input feed network based on the coupled line transdirectional (CL-TRD) coupler is also proposed to provide two orthogonal modes at the two frequency bands simultaneously. Experimental results show that the 10 dB impedance bandwidth is 32.7%. The 3 dB axial ratio (AR) bandwidths for the lower and upper bands are 4.1% and 6.5%, respectively. At 1.207 GHz, the antenna has the HPBW of 123° and 103° in the xoz and yoz planes, separately. And the values are 127° and 113° at 1.561 GHz.

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