Thursday, April 15, 2010

transmitter technology

Anciently,the air-communication and nodal equipment had big volume and heavy weight, which is unable to meet the needs of the fighting. So their study of light has become an inevitable trend. Meanwhile, the manufacturing cycle of military chi hair straightener communications equipment is long, expensive, and its structural design is also facing many new issues, therefore the traditional design method has been unable to meet its design requirements. In this cheap polo shirts paper, the CAD technology, selection of light-duty scheme through the database can be easily and repeatedly modified until a satisfactory design of performance an indicator, which developed to effectively save money and shorten the development cycle for military development and is one essential ralph lauren polo shirts technical.This paper compared the advantages and disadvantages of the direct modulation transmitter and the second frequency transmitter, zero-IF receiver and superheterodyne receiver; from the Lacoste Polo Shirts perspective of light, the design of the project use direct modulation transmitter technology and zero-IF receiver technology. Designed on the soft, adopt the idea of contracted design. From the Lacoste Polo Shirts process use a silicon substrate based on the microstrip array antenna, RF MEMS switches and microstrip antenna arrays of integrated manufacturing technology whose wave band are L/C/X, which effectively reduces the weight and size of the machine. On materials selection, propose using titanium or carbon fiber materials which are different from common materials aluminum-magnesium alloy.
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