Analysis and development of signal injection technique using transmission lines embedded at phased array aperture

The authors present an analysis of electromagnetic coupling between a twin-lead transmission line and a dipole element. The computed coupling value was verified by the measurement of the coupling between a single-wire transmission line and a monopole above a ground plane. An analysis of the coupling between a transmission line and a linear array of dipole elements over a ground plane was also developed. An experiment involving the measurement of the coupling between a single-wire transmission line and a linear array of monopoles in a parallel-plate waveguide was performed. The measured data compared favorably with the calculated data.<>