CAR RADIO WITHOUT ANTENNA

Posted on Feb 6, 2014

In the present era, the various technologies we can see. On average, every three months there is a new technology. So not supprisingly, with so many unique and innovative equipment trigerred. Car`s radio without antenna are our project. This is an idea from development of handphone. We can see the development of handphone from the radiophones

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have a long and varied history going back to Reginald Fessenden `s invention and shore-to-ship demonstration of radio telephony, through the Second World War with military use of radio telephony links and civil services in the 1950s until now. So we want to create the new development of radio that do not use the external antenna. Furthermore, it can solving the problem for radio too. In this proposal, discusses the design and circuit design of this tool. Car`s radio without antenna This radio`s car without antenna functioning by using three main content which are FM booster, internal antenna and the original circuit of radio without the antenna. There are content of this project: FM boosterthat can be used to listen programs from distant FM stations clearly. The circuit comprises a common-emitter tuned RF preamplifier wired around VHF/UHF transistor 2SC2570 ( C2570). We will connect the internal antenna to the booster and go to RF. Then the LNA will boost the signal one more time. Its mean the signal will be boosting twice. So we can get the great frequency. In this chapter we will describe the project components are used, the flow of projects, operation of the circuit, and software programs are used together with a block diagram of the entire project. The resistor is a component that limits the current flow. Resistor selection is made according to its suitability for use in the circuit. When selecting resistors, four in...

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