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Design and Implementation of Interface Board for 340MHz Wireless Transceiver

Author: LuoBin
Tutor: CaiMin；ZhangYongQiang
School: South China University of Technology
Course: IC Engineering
Keywords: Wireless transceiver Interface board EPP CPLD
CLC: TN859
Type: Master's thesis
Year: 2011
Downloads: 14
Quote: 0
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Abstract


The 340MHz band is the Ministry of Industry and Information Technology is allocated to public safety emergency communications in the field of wireless video transmission band , and the band of the electromagnetic wave has a strong diffraction performance , it can also reduce the burden of the 3G spectrum resources . Many companies are now in research and development of this band wireless products , including wireless transceiver can work is an important aspect of the product development . In order to ensure the normal work of the radio transceiver , its control signal must be stable transmission Therefore, this paper is designed based on the 340MHz wireless transceiver control interface board , and laid a solid foundation for the reliable control of the wireless transceiver . Currently, the way to achieve a lot, such as the use of DSP, ARM or microcontroller control interface board , but the cost is more expensive or less communication interface . This paper selected CPLD - based hardware platforms and optional parallel port interface board design , cost and resource utilization compromise . The major work of this paper is to start from the overall design of the interface board , made ??a detailed introduction to the overall design of the framework , and then focus on the parallel interface circuit , CPLD minimum system , regulated power supply circuit , D / A conversion circuit and so detailed circuit design using Verilog HDL language written in complete hardware code the EPP parallel interface and the data channel to select two parts and the use of the C # language to complete the master control program of the host computer software design . Mainly the following aspects : (1) using CPLD devices control the transmission of the signal to ensure the stability of the signal and avoid the traditional discrete components to build the circuit design complexity of the design improvements ; (2) the selection of the data channel using independent hot coded state transitions , and enhance the stability of the system as a whole ; I2C bus and SPI bus ( 3) the use of the software design , reducing the CPLD resource utilization and the complexity of the code design , but also enhance the flexibility of the design . Finally, through the interface board and the wireless transceiver , the FBI , the debugging results show that the wireless transceiver is able to correctly transmitting and receiving of the 340MHz frequency band signal , and further demonstrate the design of the interface board is correct .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Radio equipment,telecommunications equipment > Receiver equipment, radio Radio > Other
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