Design of a Compact Broadband 90° Waveguide Twist Based on Double-Corner-Cut Square Slots

Figure 1

The proposed 90° waveguide twist. (a) Middle cladding layer with double-corner-cut square. (b) Three cladding layers with rotational double-corner-cut squares and two substrate layers. (c) Whole structure sketch.

(a)

(b)

(c)