The invention relates to a for operating a microwave device (1), the microwave device (1) comprising a cavity (2) and multiple microwave modules (3) for providing microwaves into said cavity (2), the method comprising the steps of: —providing multiple sets of operation parameters, each set of operation parameters being associated with a certain microwave module (3); •simultaneously transmitting the sets of operation parameters to the respective microwave modules (3) and synchronously applying the set of operation parameters within the respective microwave module (3) after receipt of said set of operation parameters; or •uploading the sets of operation parameters to the respective microwave modules (3) and applying the set of parameters within the respective microwave module (3) after receipt of an acknowledge command or after expiry of a certain time period.

An exemplary semiconductor technology implemented microwave filter includes a dielectric substrate with metal traces on one surface that function as frequency selective circuits and reference ground. Other metal traces on the other surface of the substrate also provide reference ground. Bottom and top enclosures that enclose the substrate have respective interior recesses with deposited continuous metal coatings. A plurality of metal bonding bumps or bonding wall extends outwardly from the projecting walls of the bottom and top enclosures. The bonding bumps on the bottom and top enclosures engage reference ground metal traces on respective surfaces of the substrate. As a result of applied pressure, the bonding bumps and respective reference ground metal traces together with the through-substrate vias form a metal-to-metal singly-connected ground reference structure for the entire circuitry.

A microwave heating device includes the following components: a heating chamber for accommodating a heating target object, a microwave generator that generates a microwave, and a coaxial connector. The coaxial connector includes a center conductor, an insulator, and an external conductor. The center conductor is connected to the output terminal of the microwave generator. The coaxial connector includes an air gap between the center conductor and the insulator. This aspect can reduce the occurrence of cracking of the soldered joint between the microwave generator and the coaxial connector.

An oven includes a housing that defines a cavity therein, a radio wave generator coupled to the housing and configured to generate a radio wave to be transmitted to the cavity, a control unit electrically connected to the radio wave generator and configured to determine radio wave information related to an intensity, a phase, and a frequency of the radio wave to be generated by the radio wave generator, and a plurality of antennas electrically connected to the radio wave generator and configured to allow the radio wave to be radiated into the cavity. The plurality of antennas are spaced apart from one another, and the control unit is configured to determine the radio wave information for each of the plurality of antennas.

A line for heating, drying, disinfecting, pasteurizing and/or sterilizing a substance with an apparatus that includes at least one, preferably a multitude, solid-state radio frequency source(s) and a further heat treatment apparatus. A method for heating, drying, disinfecting, pasteurizing and/or sterilizing a substance with an apparatus that includes at least a solid-state RF energy source microwave heating step and a further heat treatment step.

Devices and methods for RF heating of food, using techniques which allow uniformity and/or controlled non-uniformity.

An apparatus for manufacturing tablets for hot beverage brewing includes a reservoir feeding infusible loose food products, a grinding system for the loose food products to obtain grounds of a given size, a moistening system moistening the grounds to a given moisture content, a mixing and homogenizing system for mixing and homogenizing the grounds to a homogeneous mixture, a weighing system of the homogeneous mixture to obtain a dose of predetermined weight, a forming system forming the dose into a tablet of predetermined volume, an irradiation system for electromagnetic irradiation of the tablet to overheat the particles to a partial baking and/or sintering for compactness and self-supporting ability without an enclosure, and a control system acting on the grinding, moistening, homogenizing, system, forming, and irradiating systems to control particle size, moisture content, homogeneity, weight, volume and compactness parameters of the tablet and change water permeability of the tablet accordingly.

A microwave oven having an enclosed cavity is provided including an RF signal generator; a solid state amplifier having a coplanar waveguide transmission line, the amplifier coupled to the RF signal generator for receiving and amplifying the RF signals generated thereby; an intermediate transition including: a metal boundary having a first section and a second section having different dimensions than that of the first section; a first dielectric disposed in the first section; a second dielectric disposed in the second section; and a center conductor extending from a first side of the substrate to a second side of the substrate through the first and second dielectrics, where a first end of the center conductor is connected to an output of the amplifier; and an antenna coupled to a second end of the center conductor for receiving the amplified RF signals and introducing electromagnetic radiation into the cavity.

Apparatuses and methods for applying EM energy to a load are provided. The apparatuses and methods may include at least one processor configured to receive information indicative of energy dissipated by the load for each of a plurality of modulation space elements. The processor may also be configured to associate each of the plurality of modulation space elements with a corresponding time duration of power application, based on the received information. The processor may be further configured to regulate energy applied to the load such that for each of the plurality of modulation space elements, power is applied to the load at the corresponding time duration of power application.

Devices and methods for RF heating of food, using techniques which allow uniformity and/or controlled non-uniformity.