[16] “Low-Profile Wideband and High Gain LTCC Patch Antenna Array for 60-GHz Applications”, IEEE Transactions on Antennas and Propagation, DOI 10.1109/TAP.2019.2949913(2019) 1-1.

作者：J. Zhu, Y. Yang, C. Chu, S. Li, S. Liao, Q. Xue*

摘要：This communication presents a low-profile wideband and high gain patch antenna array using low-temperature co-fired ceramics (LTCC) fabrication technique for 60-GHz applications. Coupled feeding scheme is adopted so that the antenna achieves wide impedance bandwidth that covers the entire 60-GHz licensefree band with a height of only 0.384 mm (four tape layers). The shorting via connecting the upper patch and ground achieves the function of virtual ac ground plane of differential feeding. This enables the antenna element to achieve good radiation performances including stable gain (variation less than 1 dB) and symmetrical beam with low cross-polarization over the entire frequency band. The performances of the antenna element are comparable to that of the differential-driven patch antenna while the complex differential feeding network is not required. Furthermore, the proposed antenna element with simple and easyto-integrate geometry is successfully extended to a 4×4 antenna array using substrate integrated waveguide (SIW)-based feeding network. The measured results show that the impedance bandwidth of the array covers the 60-GHz license-free band. The maximum gain can reach 16.7 dBi and the radiation performances are very stable over the operating frequency band.