In the news, according to the incandescent ban passed by the US Congress, the United States will start selling the best-selling 40-watt and 60-watt incandescent lamps on the New Year's Day in 2014. The move aims to promote energy-efficient compact fluorescent lamps, LED lights and other energy-efficient bulbs.
It is worth noting that China, the European Union, Australia, etc. will also expand the regulation range of incandescent lamps from the existing industrial fields to residential indoor lighting.
Researcher Hui Guanglun of GF Securities (000776) is expected to usher in the turning point of LED industry in 2014. The general lighting market will surpass the backlight market and become the mainstream of LED industry development.
Huang Panpan, an analyst at Orient Securities, pointed out that the LED industry is both domestic and foreign. The implementation of domestic government bidding has been significantly accelerated. The public promotion of LED lighting has been a hot spot in 2014. Foreign countries have been banned by incandescent lamps and the price subsidy of LED terminals. The demand for LED lighting has increased greatly. The overall demand has driven the manufacturers and industrial chains to make their way. Channels, foundry, and engineering are the main ways of releasing the current channels, and the channel accelerates the cooperation of traditional lighting and the expansion of new e-commerce models.
Huang Panpan suggested to pay attention: Sanan Optoelectronics (600703), Zhaochi (002429), Jufei Optoelectronics (300303), Nanda Optoelectronics (300346) and BOE A.
(This article is reproduced on the Internet. The texts and opinions expressed in this article have not been confirmed by this site, nor do they represent the position of Gaogong LED. Readers need to verify the relevant content by themselves.)
Microwave PCB
microwave PCB`s is a type of PCB designed to operate on signals in the megahertz to gigahertz frequency ranges (medium frequency to extremely high frequency). These frequency ranges are used for communication signals in everything from cellphones to military radars. The materials used to construct these PCB`s are advanced composites with very specific characteristics for dielectric constant (Er), loss tangent, and CTE (co-efficient of thermal expansion).
High frequency circuit materials with a low stable Er and loss tangent allow for high speed signals to travel through the PCB with less impedance than standard FR-4 PCB materials. These materials can be mixed in the same Stack-Up for optimal performance and economics.
The advantages of using materials with a low X, Y and Z CTE is a resulting PCB structure that will remain extremely stable in high temperature environments while operating at up to 40 GHz in analog applications. This allows for the effective placement of very fine pitch components including, in some cases, bare die-attach. Additionally, the low CTE materials will facilitate the alignment of multiple layers and the features they represent in a complex PCB Layout.
Features
.CTEr = +40/+50 ppm per °C (low); Tg (glass transition temperature) is 280°C
.ER = 3.38/3.48 at 10.0 GHz
.ER is constant to 40.0 GHz
.ED (electro-deposited) copper only
.Layer-to-layer thickness control = +/- 0.001
.Fabrication costs are typical to slightly increased
Microwave PCB
Microwave PCB,Microwave Frequency PCB,Bare Copper Microwave PCB,High Frequency PCB
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