Design And Measurement Technology Of On-Chip Measurement Reference Antenna

With the development of millimeter wave communication,small size and low loss on-chip system have been paid more and more attention.The measurement of on-chip antenna is very important.At present,there are few on-chip antenna measurement systems in use,and lack of standards among the systems,making a large difference in the measurement results of the same on-chip antenna in different systems.In addition,the horn antenna is used as the reference antenna in most antenna measurement systems.The size of the horn antenna is much larger than on-chip antenna,and its continued use as the reference antenna will bring measurement errors.In order to improve the measurement accuracy,this paper designs a series of wide-band and high-gain on-chip reference antennas in the mmwave frequency band and studies the measurement technology of on-chip antennas.The main contents and innovations are as follows:1.A wideband magnetoelectric dipole antenna with multilayer PCB is designed.Based on the design of wideband antenna unit,a wideband power divider is designed using the substrate integrated coaxial line.Electromagnetic Band-Gap structure is introduced to suppress the surface wave of the antenna array and improve the gain.The simulation results show that the bandwidth of-10dB impedance and 10dBi gain of the antenna can cover 25-37.8GHz,the maximum gain is 13.2dBi,the in-band gain is stable and the cross polarization is kept below-20dB.2.A wideband high gain aperture antenna with single layer PCB is designed.The mixing of TE210 and TE310 modes is realized and the bandwidth is extended by adding metal vias into the higher-order mode cavity to change the electric field distribution.The double patch is added to the surface of the cavity to guide the electric field distribution at the radiation aperture,so that the electric field can remain in phase at the higher frequency,and the radiation bandwidth of the antenna is further widened.In order to solve the problem of phase unbalance in the V band of the ground coplanar waveguide,bongding wires are added at the corner.The antenna array measurement results show that the impedance bandwidth is 35%,covering 53-75GHz,and the average gain in band is 12dBi.3.The measurement error of on-chip antenna is analyzed and compensated.According to the error terms in the actual measurement,a black-box model is established to quantitatively analyze the measurement uncertainty of the antenna on chip.Each error component is analyzed,and the specific values of each error component are given by taking the measurement uncertainty of an on-chip antenna as an example.In addition,the method of correcting the measurement results of the antenna on chip is also introduced.