Chinese giant patents technology behind world's first solid state RF microwave oven
June 22, 2012 // Nick Flaherty
Chinese consumer electronics giant Midea has worked with Freescale Semiconductor to develop the world's first solid state microwave oven, using less power and giving a smaller footprint.
The solid state RF microwave oven has no magnetron or heavy transformer that has been the mainstay of microwave oven design since the first one was launched by Raytheon in 1947. Among key breakthroughs was the invention of an oscillation scheme that produces 2450 MHz using Freescale devices aimed at cell phone applications.
Moving to a solid state design allows more controllability and intelligence in the oven design and lower noise operation, as well as longer life, lower voltage operation, full DC operation capability and smaller footprint.
The design has seen seven key technology breakthroughs, each with a patent application, including four fundamental 'invention' patents. These include RF high-power synthesis technology, RF output power adjustable technology, RF microwave oven heating efficiency promotion technology, heating frequency automatic control technology, the technology of RF microwave feeding, RF power source load rigid lifting technology and RF microwave oven matching technology.
The first oven has three power levels including 150W, 300W and 600W output. Midea plans to continue research and development in order to launch higher output power microwave ovens using Freescale LDMOS solid state RF power semiconductor technology.
Established in 1968, Midea has grown from what was once a local workshop into a leading consumer appliances and air conditioning systems manufacturer with a global turnover of $22bn last year.
Mouser launch design contest around NXP's dual PCB configurable logic
November 26, 2014
At electronica, NXP Semiconductors N.V. introduced its line of multi-gate, multifunction, dual PCB configurable logic devices ...
Smart PCBs for smaller ECUs: Infineon invests in PCB manufacturer
FTTH solutions for MDUs
Tiny LED makes bionic contact lenses realistic
How does a Blu-ray disc improve solar cell performance?
CEO interview: Vicor powers after higher volume applications
November 26, 2014
Patrizio Vinciarelli, is one of the longest serving CEOs in electronics, having founded Vicor in 1981 and led the company ...
Wireless power receiver enables compact and efficient contactless battery charging
Advanced wheel hub drive passes extensive driving tests
CEO interview: Murata succumbs to IoT temptation
- Power Systems Design eBook
- Halogen-free options and increased performance for terminal blocks
- Wireless Power User Guide
- Secure is the New Smart
InterviewCEO interview: Vicor powers after higher volume applications
Patrizio Vinciarelli, is one of the longest serving CEOs in electronics, having founded Vicor in 1981 and led the company ever since. At Electronica he told EE Times Europe that his company is investing ...
Filter WizardCheck out the Filter Wizard Series of articles by Filter Guru Kendall Castor-Perry which provide invaluable practical Analog Design guidelines.
Linear video channel
READER OFFERRead more
This month, Cherry is giving away five of its Energy Harvesting Evaluation kits, worth over 266 Euros each, for EETimes Europe's readers to win. Cherry's energy harvesting technology benefit mostly applications where a complex wire assembly and/or batteries would be inappropriate.
The required RF-energy is created by the mechanical actuation of the switch and the data is transmitted...MORE INFO AND LAST MONTH' WINNERS...
December 15, 2011 | Texas instruments | 222901974
Unique Ser/Des technology supports encrypted video and audio content with full duplex bi-directional control channel over a single wire interface.
Most popular news
- Could magnesium battery innovation end lithium's dominance?
- From warm to cool white: colour-temperature tunable LEDs
- Li-Fi communication module wirelessly transfers data at 1-Gbps
- Rebranding the revolution: the future of IoT is embedded
- Supercapacitor innovation promises panel-powered cars in five years