scholarly journals mmWave High Gain Planar H-Shaped Shorted Ring Antenna Array

Sensors ◽  
2020 ◽  
Vol 20 (18) ◽  
pp. 5168
Author(s):  
Young-Jun Kim ◽  
Ye-Bon Kim ◽  
Han Lim Lee

A new design approach for a mmWave high gain planar antenna is presented. The proposed method can increase antenna directivity with a minimally enlarged radiation patch while the operation frequency is still matched at a higher target frequency. The fundamental structure of the proposed antenna is configured by a H-shaped and slot-loaded patch with a shorting pin symmetrically located across a signal excitation port. Further, to match the operation frequency with the frequency for the highest achievable gain, a vertically stacked matching conductor was inserted along the signal feed path between the radiation patch and the ground layer. The proposed single antenna showed the simulated directivity of 9.46 dBi while the conventional patch with a same dielectric had 8.07 dBi. To verify practical performance, a 2 × 2 array antenna was fabricated at 28 GHz and showed the measured gain of 12.5 dBi including the array feed loss.

Author(s):  
Sheng Ye ◽  
Junyi Hu ◽  
Liang Li ◽  
Yanbing Ma ◽  
Kun Qin

Author(s):  
Le Minh Thuy

In this paper, a novel antenna array at 5GHz is presented with a low sidelobe level and wide impedance bandwidth for indoor positioning applications . The antenna array has the size of 450 ×57×0.8 mm3 with the high gain of 14.5dBi and the low SLL of -18 dB at 5GHz. The series feed using Unequal Split T-Junction is proposed with the Chebyshev-amplitude distribution to improve SLL. Besides the 1800 phase and amplitude distribution, by deploying driven elements above each single antenna element, the radiation pattern and the gain of the antenna aray are significantly improved.


2010 ◽  
Vol 58 (6) ◽  
pp. 2126-2129 ◽  
Author(s):  
Xiao-Ping Chen ◽  
Ke Wu ◽  
Liang Han ◽  
Fanfan He

2021 ◽  
Author(s):  
Ming-Ming Li ◽  
You-Wen Zhang ◽  
Hong-Li Peng ◽  
Shi-Yu Sun ◽  
Jun-Fa Mao

Electronics ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 19
Author(s):  
Muhammad Shahzad Sadiq ◽  
Cunjun Ruan ◽  
Hamza Nawaz ◽  
M. Ali Babar Abbasi ◽  
Symeon Nikolaou

In this paper, a modified ground structure capable of reducing mutual coupling to provide isolation between adjacent antenna elements is presented. The proposed modified ground structure is a combination of a strategically located ground slot, asymmetric partial ground and a substrate-integrated pin wall. The use of the modified ground structure causes a more than 28 dB (measured value) mutual coupling reduction. The modified ground structure has been optimized and validated with a finite spaced planar 2 × 1 antenna array operating at 4.16 GHz, intended for unmanned aerial vehicle radar altimeter applications. The patch antennas built with the MGS exhibit high gain (greater than 6 dBi throughout the operational band), along with inter-element coupling as low as −65 dB. Mutual coupling reduction at lower contours is beneficial for altimeter applications.


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