Antenna on board package for 5G millimeter wave phased array antenna

Abstract

In order to meet the needs of 5G communication, 5G millimeter wave phased array antenna vehicle components are developed. The traditional phased array antenna technology is mostly based on the building block transceiver or tile transceiver module of discrete devices. Using traditional MCM technology, it is difficult to realize thin, homomorphic and modular phased array antenna due to its complex process, high cost and large thickness. Therefore, simplifying the topology of phased array antenna and realizing thinning and modularization are the main trends of phased array antenna development. The highly integrated 64 element active antenna integrates 64 element broadband array antenna, microwave feed network, wave control network and power supply network with high integration. The millimeter wave active phased array antenna module developed for 5g millimeter wave communication is innovative and unique. Multi functional antenna board is used to integrate antenna array, feed network, power supply network and wave control network. Silicon based multi-functional transceiver chip is used to integrate transceiver channel, simplify antenna transceiver link, reduce antenna thickness, improve antenna productivity and reduce antenna loss. Antenna cost meets the requirements of high integration, modularization, easy assembly, low cost and strong scalability, and can meet the requirements of 5g millimetre The demand of meter wave communication.The on-board antenna is in the form of microstrip antenna. The whole on-board microstrip antenna consists of seven layers. It is fed by a stripline and coupled to the main patch antenna through an H-shaped through-hole. A layer of dielectric and parasitic patch antenna are added to the upper layer of the main patch antenna, which can expand the bandwidth to meet the requirement of 5g broadband. The feed network is a signal synthesis network that provides beamforming for the on-board phased array antenna. The feeding network adopts the structure of Wilkinson power divider with stripline, which has the advantages of miniaturization, lightweight and high reliability.The millimeter wave phased array antenna on board is tested. The results show that the normalized emission scanning pattern has good pattern characteristics in the range of ± 45 degrees, and the side lobe level is lower than - 12dB. The EIRP value is greater than 51 dBm. In the range of ± 45 degrees, the cross polarization isolation of on board phased array antenna is better than -30 dB. The test results of 5G millimeter wave phased array antenna for broadband communication show that the data transmission rate is more than 2.8Gbps when the bandwidth is 800MHz and the modulation mode is 64QAM. At the same time, high integration millimeter wave communication active phased array antenna can also be used in satellite communication, tactical mobile hot spots and other fields.