Title :
A top loaded THz photomixer antenna
Author :
Khiabani, Neda ; Yi Huang ; Yao-chun Shen
Author_Institution :
Dept. of Electr. Eng. & Electron., Univ. of Liverpool, Liverpool, UK
Abstract :
A novel terahertz (THz) top hat loaded photomixer antenna is proposed in order to enhance the output power. This device consists of trapezoidal nano-electrodes in the photomixer part and a full wavelength dipole loaded with planar hat loads in the antenna part. Considering the effect of the new photomixer configuration on the antenna source resistance, a new top hat loaded antenna with high input resistance and an enhanced impedance matching is designed. The input resistance of the device is increased more than six times as compared to a full wavelength dipole antenna which yields a significant improvement in matching efficiency. This leads to a large improvement in the radiated THz power from the device.
Keywords :
impedance matching; planar antennas; submillimetre wave antennas; submillimetre wave mixers; terahertz wave devices; antenna source resistance; full wavelength dipole; high input resistance; impedance matching enhancement; matching efficiency improvement; output power enhancement; planar hat loads; top hat loaded terahertz photomixer antenna; trapezoidal nano electrodes; Broadband antennas; Dipole antennas; Electrodes; Loaded antennas; Resistance; Resonant frequency; Impedance matching; Source resistance; THz photomixer antenna;
Conference_Titel :
Antennas and Propagation (EuCAP), 2015 9th European Conference on
Conference_Location :
Lisbon
