Integration of Grid Array Antenna in Chip Package for Highly Integrated 60-GHz Radios

A grid array antenna integrated in a thin cavity-down ceramic ball grid array (CBGA) package in low-temperature cofired ceramic (LTCC) technology is reported. The grid array antenna, intended for use in highly integrated 60-GHz radios, has achieved good matching (|S
₁₁
| ¿ -10 dB) and directional patterns from 57 to 64 GHz as well as high gain with the peak value of 13.5 dBi at 60 GHz.