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VHF , UHF radio transmitter system key technologies

Author: ZhouZuoLin
Tutor: MouShanXiang
School: Nanjing University of Technology and Engineering
Course: Electromagnetic Field and Microwave Technology
Keywords: Short-wave communication Transmitter Power amplifier Filter bank Power combiner
CLC: TN830
Type: Master's thesis
Year: 2010
Downloads: 232
Quote: 1
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Abstract


Since its and shortwave been found that can be used to communicate , the rapid development of short-wave communication , widely used in the field of wireless communications and military communications plays a vital role in the government , military , diplomatic , meteorological department . Therefore, to improve the quality of the short-wave communication has become a top priority , including how to eliminate the harmonic interference and clutter and shortwave radio transmit power has also become the focus of many countries . In this paper, a short-wave radio project based , first describes the characteristics of modern shortwave communication as well as the significance of the short-wave communication . V / UHF band shortwave radio transmitter system in the various components of the theoretical introduction is given to the local oscillation frequency gain of the simulation and the transmitter system simulation , and a line for the main components of the transmitter system broadband power amplifier sexual technology will be described. Third, for the second harmonic suppression system improvement program to add a filter bank , software design and simulation of the filter bank is given , and performance testing . Fourth , in order to achieve the high power output of the transmitter system , has developed a main amplifier , increased thereafter Four in a lumped-parameter power combiner . Here describes the theoretical power combiner design process , the principle of circuit structures and software simulation results is given .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Radio equipment,telecommunications equipment > The sending device,the transmitter > General issues
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