Planar quasi-optic THz source: The multenna

The design of a planar quasi-optical frequency multiplier to 300 GHz is described. This source is formed from slot ring antenna on a PTFE substrate loaded with a Schottky diode operating as a tripler. The antenna simultaneously receives at 100 GHz, transmits at 300 GHz and provides the appropriate impedance matching at both frequencies. This combination of an innovative receive antenna, a frequency multiplier and an output antenna is termed a multenna.