Публикуется в электронном виде на правах учебного курсового проекта.
An UHF-matrix
The modern technologies for made of the big integral schemes is provides on a very small areas of the crystalls with a very big quantity of the radiocomponents: a diodes, a transistors, a capacities and other elements in any electronic equipment from the FM-reciever to the personal computer. The simple sample of this is the big integral scheme of the EPROM-sign-generator for the videocard S3 Trio VIRGE which more often 7-10 years ago was presented in the home personal computers in the Russia. This is the EPROM-scheme with the UV-clearing (the any information will be delete after 2-3 minutes of the UV-lightner for the dollars banknotes testing light that must to run through the small circle glass window).
The EPROM - The Electrical Programming Read Only Memory
For the sizes comparizon we places near the EPROM - the simple grid and the russian coin (about 20 american cents) and shot this composition through a macro-objective.
As we shown in the EPROM there is a small silicon crystall that is devide by two parts and this likes to a stadium upper plan with a thin electrodes for the connect to an external metallic foots of the EPROM (the thinner electrodes about to 3 times smaller than one human's hair). The ever from the both sections is contains more than 1,000,000 transistors that saves an information with the EPROM-programming. Such EPROM is contain no less than 4,096 words to 8 bit х 2 section (may be more and may be not for less). So one the EPROM is contain 32,768 bit of an information then in this contains 32,768 transistors x 2 = 65,536 transistors.
Look for this: one piece of the silicon crystall with 1 x 1 mm sizes is contain about 30,000 x 2 = 60,000 elements.
The integral scheme for an UHF-matrix shown on this sketch:
Every small quadrat is a thin dielectric plate-section with a planar (surface) setup of an UHF-diodes. Size of any quadratic section equal about 1 x 1 mm too that is a result of standartization by an [IEEE]. Every section is contain about 10,000 UHF-diodes. The integral scheme is contain 16 x 16 sections and 2,560,000 UHF-diods for all surface.
Theory of UHF-matrix work
Let's look to a mathematic problem with an UHF-diodes line grid (this is the (X,Y)-matrix also with Y=1) and also the scheme with one an UHF-diode and with the i amplifiers cascades.
If a - is a level of the signal, b - is a level of an own noise of an UHF-diode, c(i) - is a coefficient of the amplification for i-th cascade for a numbered amplification cascades set and d(i) - is a level of a own noise of the i-th amplification cascades then the output signal level y will be:
and
for an UHF-diodes grid with the i UHF-diodes:
then
and
The formula (3) has a parabolic character of an increasing output signal level and (4) is a linear character.
The noise level with an increase of the number of a channels in the i amplification cascades scheme will increase quickly then in scheme with an UHF-diodes grid.
The grid with i UHF-diodes has bester a signal/a noise value and will has more sencitivity than scheme with the one UHF-diode and the i amplification cascades.
an UHF-matrix construction
an UHF-matrix construction is a shown in this sketch:
The save panel is a thin glass plate with the gray color plastic cover and an electronic card with an UHF-diodes matrix and an other components (the scheme of control and the USB-port adapter) that is placed under glass. The external side has the set for the miniUSB-connector for the IrDA-adapter and for other equipment.
an UHF-matrix scheme
an UHF-signal comes to the summators X and Y and then to the mixers A1...A5 for a friquencies decrease to 1...30 MHz. After this a signal can be recieve by the standard reciever for a professional or an amateurs applications. The upper friquency for an UHF-matrix is a placed in an area of the hundreds GHz.
[Index]
© 2009 г. Сайт оптимизирован для удобного чтения на мобильных телефонах. Сайт подготовлен при поддержке специалистов компании [Гротек]. Данный сайт не содержит какой-либо (любой) противоправной, а равно - противозаконной информации, либо информации нарушающей чьи-либо гражданские права, а также не сообщает какой-либо (любой) иной (другой) информации могущей привести к противоправным деяниям, если таковые наступают в результате неправильной трактовки этой информации, либо неправомерного ее применения.
