TY - JOUR
T1 - A Leaky-Wave Magnetoelectric Antenna With Endfire Radiation for Millimeter-Wave Communications
AU - Wang, Jingxue
AU - Wu, Fan
AU - Jiang, Defu
AU - Luk, Kwai-Man
PY - 2023/4
Y1 - 2023/4
N2 - A millimeter-wave (mmWave) leaky-wave antenna (LWA) with a wide bandwidth and stable endfire radiation is proposed. It is demonstrated that by loading a dipole array at the aperture of a half-mode substrate integrated waveguide (HMSIW) LWA, the phase constant of the leaky HMSIW can be tuned from β < k0 to β ≥ k0 , thus enabling the desired endfire radiation. The dipole array and the leaky HMSIW jointly form a complementary pair of sources that can yield wideband performance with improved gain. To validate the design concept, a prototype with a radiating length of 4.17λ0 and a width of 0.2λ0 is designed and fabricated. Experimental results verify a wide impedance bandwidth of more than 40%, a 3 dB gain bandwidth of 24%, and an endfire gain of up to 13.9 dBi. Owing to the merits including wide bandwidth, improved gain, and compact planar structure, the proposed antenna is attractive for mmWave wireless applications. © 2023 IEEE.
AB - A millimeter-wave (mmWave) leaky-wave antenna (LWA) with a wide bandwidth and stable endfire radiation is proposed. It is demonstrated that by loading a dipole array at the aperture of a half-mode substrate integrated waveguide (HMSIW) LWA, the phase constant of the leaky HMSIW can be tuned from β < k0 to β ≥ k0 , thus enabling the desired endfire radiation. The dipole array and the leaky HMSIW jointly form a complementary pair of sources that can yield wideband performance with improved gain. To validate the design concept, a prototype with a radiating length of 4.17λ0 and a width of 0.2λ0 is designed and fabricated. Experimental results verify a wide impedance bandwidth of more than 40%, a 3 dB gain bandwidth of 24%, and an endfire gain of up to 13.9 dBi. Owing to the merits including wide bandwidth, improved gain, and compact planar structure, the proposed antenna is attractive for mmWave wireless applications. © 2023 IEEE.
KW - Complementary source
KW - endfire radiation
KW - half-mode substrate integrated waveguide (HMSIW)
KW - leaky-wave antenna (LWA)
KW - millimeter waves (mmWaves)
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U2 - 10.1109/TAP.2023.3247161
DO - 10.1109/TAP.2023.3247161
M3 - RGC 21 - Publication in refereed journal
SN - 0018-926X
VL - 71
SP - 3654
EP - 3659
JO - IEEE Transactions on Antennas and Propagation
JF - IEEE Transactions on Antennas and Propagation
IS - 4
ER -