X-band pulse compression using a five-fold helically corrugated waveguide

Summary form only given. Microwave pulse compression has applications in radar technology and plasma diagnostics. The pulse compressor requires a dispersion curve with a monotonic group velocity and low losses in a reasonable wide frequency band. It can be achieved by the helically corrugated waveguide (HCW) with both axial and azimuthal periodicity that couples modes in the circular waveguide to generate new operating eigenwaves. The HCW has successfully been used in the gyro-TWA, gyro-BWO and pulse compressor. Following the success of a pulse compressor using a 3-fold HCW, the dispersion characteristic of the 5-fold HCW has been analytically, numerically studied and measured. The compression factor of the compressor was also measured.