Abstract
According to the IEEE 802.11aj (45 GHz) standard, a millimeter-wave planar substrate-integrated endfire antenna with wide beamwidths in both E - and H -planes, and good impedance matching over 42.3–48.4 GHz is proposed for the Q-band wireless local area network (WLAN) system. The proposed antenna comprises a printed angled dipole with bilateral symmetrical directors for generating wide-angle radiation, and the beamwidth in both E - and H -planes can be easily adjusted. The antenna is prototyped using the conventional printed circuit board process with a size of 6 × 26 × 0.508 mm3, and achieves beamwidths greater than 120° in two main planes, ${S}$ 11 of less than –12.5 dB, and peak gain of 3.67–5.2 dBi over 42.3–48.4 GHz. The measurements are in good agreement with simulations, which shows that the proposed antenna is very promising for Q-band millimeter-wave WLAN system access-point applications.
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