LTE Design and Research of passive RF components
|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|
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 .