International Journal of Antennas
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16
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Published By Academy And Industry Research Collaboration Center

2455-7897

2021 ◽  
Vol 7 (4) ◽  
pp. 1-19
Author(s):  
Ran Liu and ◽  
Daniel N. Aloi

High-accuracy Global Navigation Satellite System (GNSS) positioning is a prospective technology that will be used in future automotive navigation systems. This system will be a composite of the United States' Global Positioning System (GPS), the Russian Federation's Global Orbiting Navigation Satellite System (GLONASS), China Beidou Navigation Satellite System (BDS) and the European Union’s Galileo. The major improvement in accuracy and precision is based on (1) multiband signal transmitting, (2) carrier phase correction, (3) Real Time Kinematic (RTK). Due to the size and high-cost of today’s survey-grade antenna solutions, this kind of technology is difficult to use widely in the automotive sector. In this paper, a low-cost small size dual-band ceramic GNSS patch antenna is presented from design to real sample. A further study of this patch antenna illustrates the absolute phase center variation measured in an indoor range to achieve a received signal phase error correction. In addition, this low-cost antenna solution is investigated when integrated into a standard multi-band automotive antenna product. This product is evaluated both on its own in an indoor range and on a typical vehicle roof at an outdoor range. By using this evaluation file to estimate the receiver position could achieve phase motion error-free result.


2021 ◽  
Vol 7 (1) ◽  
pp. 15-23
Author(s):  
B.V. Naik ◽  
Debojyoti Nath ◽  
Rina Sharma

This paper presents the design and analysis of the compact patch antenna for 5G and future generation millimetre-wave communication system. The proposed design consists of FR4 substrate length, width, and height of 21.37 x 5 x 1.59 mm3 , besides two rectangular slots incorporated with a dimension of 0.2 x 2.6 mm2 within the patch of 4.22 x 3.46 mm2 , to enhance the resonance frequency more accurate and one more square slot incorporated in to feed line with the dimension of 0.2 x 0.5 mm2 . The obtained return losses of the design is-21.25dB with gain and voltage standing wave ratio (VSWR) of 3.90dBi,1.18 by using a lumped port configuration. For the specific absorption rate (SAR) evaluation considered as a human head model in high-frequency structure simulator (HFSS) software, the obtained values are within the standard limit, the design covers the frequency range of 28GHz, this design may capable of 5G and next-generation wireless communication system application.


2021 ◽  
Vol 7 (1) ◽  
pp. 1-14
Author(s):  
Putu Artawan ◽  
Yono Hadi Pramono ◽  
Mashuri Mashuri ◽  
Josaphat T. Sri Sumantyo

This paper presents the designed of varians array in curved microstripline antenna for radar communication. The antenna geometry comprises of three varians in matrics 2x2, 2x4 and 4x4 dimensions. The several array operates in C-Band frequencies (4GHz – 8GHz) and X-Band frequencies (8GHz-12GHz) with a 1.82 VSWR, -18.72dB Return loss, 0.29 reflection coefficient, and 5.8dB gain for 2x2 array, 1.64 VSWR, -16.17dB Return loss, 0.24 reflection coefficient, and 5.4dB gain for 2x4 array, 1.04 VSWR, - 37.70dB Return loss, 0.19 reflection coefficient, and 7.6dB gain for 4x4 array. All of the varians in array elements are feed using a direct feeding technique. This array antenna is suitable developed for use in radar communication systems.


2017 ◽  
Vol 3 (1/2/3) ◽  
pp. 01-12
Author(s):  
Aishwarya Sudarsan ◽  
Apeksha Prabhu

2016 ◽  
Vol 2 (3) ◽  
pp. 01-11 ◽  
Author(s):  
Samaresh Bhattacharjee ◽  
Ashish Kumar ◽  
Manish Naja

2016 ◽  
Vol 2 (2) ◽  
pp. 01-10 ◽  
Author(s):  
P. Viji ◽  
P.Nagasaratha ◽  
R.Sriranjini

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