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This article presents an ‘Automated Oscillator Tuning System’ (AOTS) that together with mechanical motorized fixtures can be used to automatically adjust the frequency and backshort tuners of a coaxial cavity, resonant cap mm-wave oscillator via a computer program. Here we demonstrate how the AOTS can be used to quickly and accurately characterise a coaxial cavity, resonant cap mm-wave... [Report]

A novel use of a 'Rotary Polariser Quasi-Optical System' to locate the principal axes of a birifringent material is presented. It will be demonstrated that by examination of the ellipticity of the beam, one can determine the orientation of such principle axes and hence optimize the performance of Faraday Rotators. [Report]

This article, reports ‘Frequency Dependent Faraday Angle Resonance’ in a magnetic sample at millimetric frequencies for the first time using a fully automated rotary polariser quasi-optical system. This serves to compliment the original work performed by Raum at Terahertz frequencies in the Frequency independent region of a magnetic material. In addition, it is shown how the same instrument... [Report]

This article, describes the development of a fully automated rotary polariser quasi-optical system for use at millimetric frequencies. It is reported how the system can accurately measure the rotation and ellipticity that may be induced on a linearly polarised Gaussian Beam when it passes through a magnetic material under study with ~1% error. The system is demonstrated by the automatic... [Report]

An open access copy of this article is available and complies with the copyright holder/publisher conditions.A new method, in the form of a hypothesis test, is presented that compares the eigenvalues of a multichannel data set to eigenvalues of a synthetic mixture. The synthetic mixture is created from a set of independent components (IC) that have been demixed from the original data. The IC are then repropagated from a fictitious source space to a set of fictitious sensors under independent component... [Journal Article]