Integrated Multi-Channel Multi-Frequency Microstrip Antenna Array

This paper describes an integrated, multi-channel, multi-frequency microstrip antenna array confined to a given limited aperture. Integration of several channels has become important in the development of wide scan angle phased-array antennas that operate without the appearance of grating lobes. The integrated array presented here is built from special multi-channel microstrip elements. Each element of the array consists of microstrip patches operating at different frequencies which are integrated into one microstrip element. This unique technique reduces the weight and dimensions of the multi-channel array, compared to that of separated arrays with the same performance.