Reduction of mutual coupling using perfectly conducting fences

A theoretical and experimental study of the use of thin perfectly conducting fences to reduce the mutual coupling of two parallel-plane waveguides radiating through a ground plane is described. The two cases which are studied are E -plane coupling of parallel planes with transverse electromagnetic mode propagation and H -plane coupling of parallel planes with the fundamental transverse electric mode propagation. The analysis presented accounts for a number of higher order modes in the waveguide apertures and uses a Fourier series approximation to the fence currents. Close agreement with experimental results is demonstrated.

[1]  H. Wheeler,et al.  Wide-angle impedance matching of a planar array antenna by a dielectric sheet , 1965 .

[2]  P. Butzien,et al.  Match optimization of a two-part phased array antenna element , 1967 .

[3]  V. Galindo,et al.  Dielectric loaded and covered rectangular waveguide phased arrays , 1968 .

[4]  R. Mailloux,et al.  Radiation and near-field coupling between two collinear open-ended waveguides , 1969 .

[5]  E. DuFort.  Design of corrugated plates for phased array matching , 1968 .

[6]  N. Amitay.  Improvement of planar array match by compensation through contiguous element coupling , 1966 .

[7]  N. Brennecke,et al.  Use of fences to optimize operating impedance of phased arrays, using an improved measuring technique , 1964 .

[8]  C. P. Wu.  Numerical Solutions for the Coupling Between Waveguides in Finite Arrays , 1969 .

[9]  G. Knittel,et al.  Impedance matching a phased-array antenna over wide scan angles by connecting circuits , 1965 .

[10]  S. Lee,et al.  Impedance matching of an infinite phased array by dielectric sheets , 1966 .

[11]  V. Galindo,et al.  Surface-wave effects on dielectric sheathed phased arrays of rectangular waveguides , 1968 .

[12]  A. Oliner,et al.  Mutual coupling effects in large antenna arrays II: Compensation effects , 1960 .

[13]  W. R. Jones,et al.  Convergence of Numerical Solutions of Iris-Type Discontinuity Problems , 1971 .

[14]  Raj Mittra,et al.  Relative convergence of the solution of a doubly infinite set of equations , 1963 .

[15]  S. Litt,et al.  Capacitive ground plane for a phased array antenna , 1968 .