Dissertation > Industrial Technology > Radio electronics, telecommunications technology > Wireless communications > Mobile Communications

LTE Design and Research of passive RF components

Author XieLong
Tutor PanJin
School University of Electronic Science and Technology
Course Electromagnetic Field and Microwave Technology
Keywords Long Term Evolution project Passive RF components Diplexer Directional coupler A low -pass filter Miniaturization
CLC TN929.5
Type Master's thesis
Year 2011
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With the continuous improvement of people's needs and direction of development of the market demand , following the third generation mobile communication technology 3GPP Long Term Evolution project ( LTE ) . The rapid development of mobile communication technology , making it the requirements of the mobile communication device is also getting higher and higher , integrated components , high targets , miniaturization , and the stability of the components have become a technical difficulty . Passive microwave device as an integral part of the mobile communication device ( including diplexers, filters , couplers and lightning rods , etc. ) , play a less important role in the whole system : frequency selection system , to improve the sensitivity of the system , monitoring of the system power and harmonic suppression . The same time, the integrated design of passive components critical to system integration and system miniaturization . Thus, the design and high-performance, compact structure and high stability of the passive components , and efficient integration is the key to the development of the mobile communication research . The main work for the 700MHz LTE band of studies design a high performance, miniaturization and high integration of passive microwave components for mobile communication ( assembly includes a duplexer , dual directional coupler , and a low-pass filter ) . The main contribution of this paper can be summarized as the following aspects : (1) personalized components of the arrangement for 700MHz LTE design architecture and size requirements , and each member has innovative design solutions . (2) According to the indicators , a coaxial - microstrip structure of ultra-small , high directivity directional coupler , and simulation and test results . ( 3 ) combined with the requirements of the external dimensions and design specifications , design generalized cut Chebyshev coaxial the SIR structure of duplexer , reasonable topology selection and distribution of discharge chamber , greatly improving the utilization of the design space , and gives the low-pass size limitations for the location and design of the arrangement of the filter . ( 4) Design the harmonics of the low -pass filter cutoff frequency in the 2.5GHz coaxial structure , the successful inhibition of the diplexer . (5) components for processing test results fit well with the whole index requirements .

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