Radio frequency heating apparatus
US10143045B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 18, 2015 |
| Grant date | Nov 27, 2018 |
| Priority date | — |
| Expiry date | Nov 21, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B40/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A radio frequency (RF) heating apparatus and a microwave oven including an RF heating apparatus. The apparatus includes a cavity for receiving an object to be heated. The apparatus also includes a plurality of channels for generating RF radiation to be introduced into the cavity. Each channel includes a frequency synthesizer, a power amplifier and an antenna. Each channel is operable to use a common phase reference signal for generating the RF radiation. Each channel may be controllably operable to generate RF radiation having different, respective frequency spectra. Forward and reverse signal detection circuitry may be provided that is operable to determine amplitude, frequency and/or phase information relating to RF radiation in the cavity. This information may be used for adaptively controlling the RF radiation generated by each channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.