Abstract
A Ka-band dual-polarized low profile magneto-electric (ME) dipole antenna with wide operational bandwidth is proposed in this paper. A thin substrate with two-stage meandered vias is utilized for realization of the proposed antenna. The meandered vias aid in compensation of phase difference caused due to utilization of thin substrate. The thickness of proposed antenna is reduced from 0.25 λ <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">g</sub> to 0.11 λ <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">g</sub> by using these two-stage meandered vias. The low profile antenna topology results in bandwidth reduction which is neutralized by introducing asymmetric slots in the ground plane. Shorting pins are inserted for elimination of higher order TM <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">21</sub> mode of Ka-band that results in a uniform broadside radiation pattern due to excitation of fundamental TM <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">10</sub> mode. The proposed antenna covers whole Ka-band with operating frequencies from 26 - 42 GHz. A 1 × 4 antenna array is also designed and fabricated with a reasonable gain of 12.06 dBi and stable radiation patterns. Simulated and measurement results are presented with detailed justification.
Highlights
The emergence of fifth generation (5G) cellular networks has led widespread attention to millimeter-wave broadband antennas due to demand for high data rates
Even though the fractional bandwidth of antenna is more than 40% and height of antenna is only 0.12 λ0, but the cost of antenna is relatively high since the low temperature co-fired ceramic (LTCC) material has been used for its implementation rather than printed circuit board (PCB)
This paper presents a wideband and low-profile dualpolarized ME-dipole antenna array operating for whole Kaband
Summary
Yin Chen Chang, Ching Cheng Hsu, M. Abstract—A Ka-band dual-polarized low profile magnetoelectric (ME) dipole antenna with wide operational bandwidth is proposed in this letter. A thin substrate with two-stage meandered vias is utilized for realization of the proposed antenna. The meandered vias aid in compensation of phase difference caused due to utilization of thin substrate. The thickness of proposed antenna is reduced from 0.25 λg to 0.11 λg by using these two-stage meandered vias. The low profile antenna topology results in bandwidth reduction which is neutralized by introducing asymmetric slots in the ground plane. Shorting pins are inserted for elimination of higher order TM21 mode of Ka-band that results in a uniform broadside radiation pattern due to excitation of fundamental TM10 mode.
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