A Leaky-Wave Magnetoelectric Antenna With Endfire Radiation for Millimeter-Wave Communications

作者：Wang, Jingxue; Wu, Fan^*; Jiang, Defu; Luk, Kwai-Man

来源：IEEE Transactions on Antennas and Propagation, 2023, 71(4): 3654-3659.

DOI：10.1109/TAP.2023.3247161

• Gain
• Millimeter wave communication
• Substrates
• Dipole antennas
• Apertures
• Microwave antenna arrays
• Antennas
• Complementary source
• endfire radiation
• half-mode substrate integrated waveguide (HMSIW)
• leaky-wave antenna (LWA)
• millimeter waves (mmWaves)

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 beta < k(0) to beta >= k(0), 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 4.17 lambda(0) and a width of 0.2 lambda(0) 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.

• 单位
  河海大学