A Bent Connector Between Two Rectangular Dielectric Waveguides at W-Band

In this letter, a W-band bent connector between two rectangular dielectric waveguides (RDWs) is proposed. The connector is composed of a gap, two ridge waveguides (RWs), two dielectric-filled waveguides (DWs), and two tapered horns (THs). Three connectors with different bend angles are designed and fabricated. The measured frequency ranges (<inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$\vert S_{11}\vert \lt -10$</tex-math> </inline-formula> dB) of connectors A (180°), B (135°), and C (90°) connecting two RDWs are 86.9–103.8, 86.3–102.2, and 82.1–102.1 GHz, respectively. Within each frequency range, the insertion losses of connectors A–C are 0.35–1.87, 0.25–1.55, and 0.26–1.57 dB, respectively. Compared with previous connectors, the proposed bent connector enables interconnection between two RDWs with different angles.