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.
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The SoCKIT evaluation kit is Arrow's latest development tool, featuring an Altera Cyclone V SoC with a dual-core ARM Cortex-A9 MPCore processor integrated within its 28nm FPGA fabric.
Altera SoCs allow embedded system developers to differentiate their end product with customized hardware and software, and extend the product lifecycle through hardware and software updates in the field. This month, Arrow Electronics is giving away five SoCKIT evaluation kits featuring Altera’s ARM-Based SoCs, worth €249 each, together with the free entrance to one of Arrow’s SoC workshops organized throughout Europe.
And the winners are...
In our previous reader offer, Freescale Semiconductor was giving away five IMX6Q, Sabre-lite kits, worth £128.06 each.
Lucky winners include Mr. X. Salada Sole from the UK, Mrs A. Peric from Germany, Mr Z. Janosy from Hungary, Mr D. Gacina from Croatia and Mr B. Boris from France. All should be receiving their packages soon. Let's wish them some interesting findings with their projects.
December 15, 2011 | Texas instruments | 222901974
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