Wide bandwidth varactor-tuned patch antenna

2009 ◽  
Vol 45 (16) ◽  
pp. 816 ◽  
Author(s):  
S. Baylis ◽  
S. Aguilar ◽  
T. Weller
Keyword(s):  
Patch Antenna ◽  
Wide Bandwidth

scholarly journals High Isolation Dual-Polarized Patch Antenna with Hybrid Ring Feeding

2017 ◽  
Vol 2017 ◽  
pp. 1-6 ◽  
Author(s):  
Xian-Jing Lin ◽  
Ze-Ming Xie ◽  
Pei-Sheng Zhang
Keyword(s):  
Reflection Coefficient ◽  
Patch Antenna ◽  
Wide Bandwidth ◽  
High Isolation ◽  
Operating Band ◽  
Feeding Structure ◽  
Dual Polarized ◽  
Horizontal Substrate ◽  
Wide Operating ◽  
Hybrid Ring

This paper presents a hybrid ring feeding dual-polarized patch antenna with high isolation in a wide working band. The proposed antenna consists of a circular radiating patch printed on the upper horizontal substrate, two pairs of Γ shaped strips printed on two vertical substrates, and a hybrid ring feeding network printed on the lower two horizontal substrates. The proposed antenna adopts Γ shape strips coupled feeding structure to achieve a wide operating band. Furthermore, a hybrid ring feeding structure with high isolation in a wide bandwidth, which is firstly proposed, is applied as feeding network. When one port is excited, the feeding network can realize twice the power cancellation. Thus, high ports isolation characteristics can be obtained. A prototype of the proposed antenna is fabricated and measured. Measured results show that the 10 dB reflection coefficient bandwidths of the two ports are both about 38.7%, with port isolation higher than 40 dB through most of the band, and the cross-polarizations are below −24 dB.

scholarly journals Design and Fabrication of a Printed Tri-Band Antenna for 5G Applications Operating Across Ka-, and V-Band Spectrums

Electronics ◽  
2021 ◽  
Vol 10 (21) ◽  
pp. 2674
Author(s):  
Musa Hussain ◽  
Syed Muhammad Rizvi Jarchavi ◽  
Syeda Iffat Naqvi ◽  
Usama Gulzar ◽  
Salahuddin Khan ◽  
...  
Keyword(s):  
Patch Antenna ◽  
State Of The Art ◽  
High Gain ◽  
Potential Candidate ◽  
Operational Mode ◽  
Multiple Frequency ◽  
Wide Bandwidth ◽  
V Band ◽  
Communications Systems ◽  
Compact Size

In this paper, an umbrella-shaped patch antenna for future millimeter-wave applications for the 5G frequency band is presented. The proposed antenna resonates at multiple frequency bands, i.e., 28 GHz, 38 GHz, and 55 GHz (V-band) that have been globally allocated for 5G communications systems. The proposed antenna is designed using Rogers RT/duroid 5870, with a relative permittivity, loss tangent and thickness of 2.33 mm, 0.0012 mm and 0.79 mm, respectively. The antenna has an overall size of 8 mm × 8 mm which correspond to 0.7 λ × 0.7 λ, where λ is free space wavelength at the lowest resonance. Moreover, the wide bandwidth, high gain and tri band operational mode is achieved by introducing two stubs to the initial design. The antenna prototype was fabricated and validated experimentally. The comparison of the simulated and measured results demonstrates a good correlation. Additionally, the comparative analysis with state of the art work demonstrates that the proposed antenna offers compact size, simple geometrical configuration, wide bandwidth, high gain, and radiation efficiency which makes the proposed antenna a potential candidate for compact smart 5G devices.

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