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Abstract

A millimeter and/or submillimeter network vector analyzer comprises a millimeter source and a millimeter heterodyne receiver, and the network to be analyzed is placed between the source and the receiver. The millimeter source comprises a first microwave source feeding a millimeter harmonic generator. The millimeter heterodyne receiver comprises a millimeter harmonic mixer which is fed by a second microwave source which serves as a local oscillator for it, an HF (high frequency) vector receiver and a device for displaying the characteristics of the analyzed network. The analyzer includes a device for servocontrolling the frequency of emission of the second microwave source by the frequency of the first microwave source (or conversely), and a main HF (high frequency) oscillator activating this servocontrol device. The main oscillator is also directly used as a phase reference for the HF (high frequency) vector receiver. Both the millimeter harmonic generator fed by the first microwave source and the millimeter harmonic mixer of the millimeter heterodyne receiver operate at the same harmonic order. The analyzer makes possible vector measurements in all millimeter and submillimeter bands up to the terahertz frequency range without corresponding directional couplers or microwave frequency synthesizer.

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First Claim