This paper presents a study of two longitudinal slots of same electrical lengths milled on two waveguides for series and shunt slot array planar antenna. Initially single longitudinal slot element is milled on waveguide which is called single element waveguide slot antenna (WSA). Two same or different structures of single element WSA are kept either in series or shunt for making of two element longitudinal waveguide series slot array and shunt slot array planar antenna respectively. Theoretical data for the reflection coefficient and transmission coefficient due to mutual impedance have been obtained for two element series and shunt planar WSA. The theoretical data have been compared with simulated data for validation the proposed design structures. The almost outstanding agreement obtained between the results validates the investigation of proposed design structure. After the reflection and transmission coefficients validation, the total gain of the proposed design structures is simulated. The result found in series slot array planar antenna behaves as a multi band within in X-band for the application of the multi frequency selective device for communication and shunt slot array planar antenna behaves as in single band entire coverage of X-band for the application of long distance data communication.
This paper presents a study of two longitudinal slots of same or different electrical lengths milled on a waveguide for series and shunt slot array antenna. Initially two elements series and shunt slot array are designed separately. Theoretical data for the scattering parameter have been obtained for two element series and shunt slot array antenna. The theoretical data have been compared with simulated data for validation the proposed design structures. After the validation, the total gain of the proposed design structures is simulated. The result found in different cases of slot array antenna behaves as either dual band antenna or single band within X-band. Dual band antenna is applicable for the multi frequency selective device for communication and single band antenna is applicable for the long distance data communication.
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