Tunable phase shifter in substrate integrated waveguide
2019 Volume 16 Issue 19 Pages 20190489
Details
2019 Volume 16 Issue 19 Pages 20190489
In this paper, A variable substrate integrated waveguide (SIW) phase shifter is presented. The phase shifter is formed by capacitively coupling varactors to a longitudinal slot on a SIW. Compared to other SIW phase shifters, our design is tunable, and only occupies 7.5 mm longitudinal length. Experiment results indicate the device is shown to have up to 60 degrees phase shift in the 5.3–6 GHz range with insertion loss better than 3 dB and return loss generally better than 20 dB.
