Research / 2019 / Article / Fig 6

Research Article

Spiral Field Generation in Smith-Purcell Radiation by Helical Metagratings

Figure 6

Fabricated spiral field Smith-Purcell generators and the measured results. (a) Photograph of the helical metagratings and the monocone transducer. (b) Measured radiated Ez field distribution and (d) phase distribution for the left-handed generator. (c) Measured radiated Ez field distribution and (e) phase distribution for the right-handed generator. The working frequency is 10 GHz.