2 results about "Leakage radiation" patented technology

A method for identifying arcing within a processing chamber (2) of a household microwave appliance (1) during a microwave processing procedure, wherein the setpoint of at least one microwave operating parameter is varied during the method, wherein a measured value (LM) of leakage radiation is measured multiple times sequentially at the same setpoint of the at least one microwave operating parameter during the microwave processing procedure, and an arcing is identified when the fluctuation range (LMS) of the measured value (LM) measured at the same setpoint reaches or exceeds a predetermined fluctuation range (LMS thr). A household microwave appliance (1) has a microwave generator (5) for generating microwaves, a processing chamber (2) capable of being loaded by the generated microwaves, microwave detection devices (10, 11) for measuring microwave leakage radiation escaping from the processing chamber (2), and a data processing device (10) for identifying arcing by evaluating the microwave leakage radiation (LM) measured by the microwave leakage detection devices (10, 11), wherein the household microwave appliance (1) is configured to perform the method. This invention can be particularly advantageously applied to stand-alone microwave devices and ovens with microwave functionality, especially when the microwave detection device is equipped with a sniffing circuit.

This invention discloses a surface wave antenna system integrated into a tilted vehicle windshield, comprising a stacked glass substrate, a parallel plate waveguide, a TEM surface wave excitation structure, a TM0 mode conversion and radiation structure, and a TE0 mode excitation and radiation structure. The TEM mode surface wave is shaped and propagated using a gradient-profile parallel plate waveguide, and TM0 mode conversion and leakage radiation are achieved at a single-sided ground interface. Simultaneously, the reverse current coupling between the upper and lower metal conductors excites large-angle TE0 mode surface wave propagation and radiation in the azimuth plane. This invention achieves wide-angle radiation coverage in both the elevation and azimuth planes, and requires no interconnecting vias, making it suitable for integration into vehicle windshields and application in high-frequency communication scenarios such as V2X.