Differentially-Fed Millimeter-Wave Yagi-Uda Antennas With Folded Dipole Feed

作者：Alhalabi Ramadan A^*; Rebeiz Gabriel M

来源：IEEE Transactions on Antennas and Propagation, 2010, 58(3): 966-969.

DOI：10.1109/TAP.2009.2039320

• Automotive radars
• coplanar strip line (CPS)
• endfire antennas
• millimeter-wave antennas
• mm-wave communication systems
• planar antennas
• Yagi-Uda antenna

Differentially-driven Yagi-Uda antennas have been developed for millimeter-wave applications. The antennas are built on both sides of a Teflon substrate (epsilon(r) = 2.2). A key design aspect is the use of a folded dipole feed which increases the input impedance from 18 Omega (standard dipole case) to 150 Omega and is compatible with coplanar strip lines. A 7-element design results in a gain of 8-10 dB at 22-26 GHz and a cross-polarization level of < -22 dB. The differentially-fed Yagi-Uda antenna with folded dipole results in high radiation efficiency (> 90% at 22-26 GHz) and is suitable for mm-wave point-to-point links communication systems.

• 出版日期2010-3