SAID Fiber-Antenna Radio Head at 50 GHz

Planar transmitting antennas with a direct photodiode (PD) connection for 50 GHz fiber-fed signal radiation are presented. The short asymmetrical inductive dipole (SAID) antenna enables independent adjustment of either the real and imaginary part of the input impedance through specific geometrical dimensions, allowing for flexible conjugate impedance match with the PD, maximizing the radiated power. Measured results confirm excellent antenna efficiency and radiation patterns, demonstrating the effectiveness of the approach.