FPC-Based Integration of 5G Mm-Wave Antennas and 5G Non-Mm-Wave Antennas for Mobile Phones

An innovative and practical integration of 5G millimeter-Wave (mm-Wave) antennas and 5G non-mm-Wave antennas based on a thin flexible printed circuit (FPC) for mobile phones is proposed. The integrated 5G mm-Wave antennas are in a
$1 \times4$
array covering the 3GPP band n261 (27.50-28.35 GHz) and two 5G non-mm-Wave antennas are integrated in an equivalent form by reusing the ground of the mentioned 5G mm-Wave antenna array to achieve the MIMO function in the 3GPP band n79 (4.4-5.0 GHz). The thin FPC-based integrated 5G antennas (with a total thickness of 0.3 mm and total width of 26.07 mm) can well conformally match the attractive curved back covers of mobile phones to attain elegant applications.