Investigation On 60GHz InP On-chip Antenna

With the development of 4G of wireless communication technology, people are having increasing demands on high speed transmission of information and the information capacity maximization, thus the millimeter wave technology has aroused widly concern. Serving as one of the important application of millimeter wave technology, the traditional Antenna on Chip(AOC) mostly adopts a CMOS process. However, due to the high dielectric constant of the silicon substrate and low resistivity, this kind of AOC has a low radiation efficiency universally. Therefore, this paper adopts a new technology- indium phosphide(In P) process to design the 60 GHz on-chip integrated antenna. Besides, the artificial magnetic conductor(AMC) technology is applied to further improve the antenna’s radiation efficiency. This paper mainly researches on several aspects as follows:1) Made a thorough investigation on the CMOS process and In P process to get familiar with the structure of each layer and the process technology of the two processes. 2) Designed an on-chip dipole antenna based on the new In P process. We integrated the most classic dipole antenna on the environment of In P process and the SMIC-0.18 um CMOS process respectively and through the calculation and analysis of electromagnetic simulation software HFSS 13.0, we finally draw the conclusion that compared with the traditional CMOS process, the bandwidth and gain of the on-chip dipole antenna based on the In P process are improved. 3) Designed several different structures of the artificial magnetic conductor. By using the electromagnetic simulation software, we can set up boundary conditions around each unit of the AMC to simulate an infinite periodic AMC. Eventually we have successfully worked out some AMC structures such as the standard cross, hexagon, snowflake and the girder-shaped ones. 4) Studied on the design of on-chip dipole antenna based on the different periodic and arrangement of the artificial magnetic conductor. By using the artificial magnetic conductor structure we have designed, we try to work out the on-chip dipole antenna based on the snowflake-shaped and the h-shaped AMC. Based on the arrangement of different period, we concluded that by increasing the amount of AMC on the antenna current direction and decreasing the amount of AMC that is perpendicular to the current direction, the antenna’s radiation efficiency can be improved effectively. Moreover, by leaving a blank under the antenna, we came to the conclusion that it is mainly the AMCwhich exactly lies under the antenna that has an effect of synthetic radiation. 5) Designed a new type of on-chip circular polarization antenna with In P process and AMC technology. After realizing the advantages of the new In P process and the performance of the AMC, we designed a new type of annular circular polarized antenna in view of the current common application of the current circularly polarized antenna. Though the AMC we successfully improved the antenna gain. The on-chip circular polarization antenna based on the AMC has many advantages like small volume, wide bandwidth, high gain and easy to adjust the polarization.