Abstract
The simulated characterisation and tuning of prototype antennas prior to manufacture is described in this study. The antennas incorporate Schottky diodes so as to frequency triple incident sub-THz power. Such a dual frequency, non-linear, device has been called a multenna. A metrology is outlined for ease of multiple measurements to permit exploring scenarios of multenna element design. Four options are optimally oriented and assembled onto an appropriately dimensioned tile substrate to minimise mutual coupling during characterisation of each element individually. Transmission measurements of the multennas are performed at 100 and 300 GHz: an example of resonant behaviour is presented.
Highlights
Unlike X-rays, non-ionising terahertz (THz) radiation is not known to damage organic material. over the last decades many applications have been studied using THz radiation, namely: spectroscopy; bio-sensing; medical and pharmaceutical applications; and potential industrial and security applications [1,2,3,4,5,6]
The main advantages of a QO multiplier array are the lateral compactness of the device, built-in frequency and polarization control, simpler impedance matching, reduced ohmic losses and, as each element contributes a small part of the total power, there is reduced risk of thermal breakdown
In this article we report on a slot-ring antenna loaded with a frequency tripling Schottky diode to form the basis of a THz source
Summary
Unlike X-rays, non-ionising terahertz (THz) radiation is not known to damage organic material. over the last decades many applications have been studied using THz radiation, namely: spectroscopy; bio-sensing; medical and pharmaceutical applications; and potential industrial and security applications [1,2,3,4,5,6]. This work suggests an alternative design of the diode-coupled antenna element based on a ring-with-stubs structure, which is optimized to match the diode impedance at both fundamental and 3rd harmonic.
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