The Study Of Circular Polarization Microstrip Antenna In Ku-band

In recent years, with the increasing of air traffic volume of business, other band satellite communications resources has become increasingly tense, in order to ease the business boom of the frequency of resource constraints, people began to pay more attention to the use of higher frequency, which one ku-band broadcast satellite with its transponder high power, high frequency, wide bandwidth data transmission , receiving antennas and small aroused extensive attention.The study of my paper is Circularly polarized antenna for the specific parameters, designing three kinds of circularly polarized microstrip antenna, the first one achieves circular polarization through the most common triangular chamfered, the second one uses two upper right corner rectangular cut corners to achieve circular polarization, the third one adds a plus side to achieve a tunable circular polarization, calculated patch by basic data, then useing the finite difference time domain numerical to calculate, by calculating the adjustment of individual data, at the same time analyzing the parameters impact and the parameters of the antenna which can achieve the target, See the matching of the antenna, bandwidth, gain, beam width, bandwidth, circular polarization, circular polarization direction indicators through S11, Smith chart, 2D pattern, axial ratio, VSWR,3D map, and list all the indicators required by contrasting the three antennas are in line with the requirements of target parameters, the final result. Comparison of three patches simultaneously, by comparing the S11, Smith chart, axis ratio, 2D pattern, VSWR,3D maps which show the advantages and disadvantages of various antennas, summarizing some laws and characteristics, and hope to offer some help to the future of the microstrip antenna Simulation,provides several references for microstrip antenna of the actual application.