1 AIT Asian Institute of Technology

Cavity duplexer design for TETRA repeater

AuthorAye Thinzar Kyaw
Call NumberAIT Caps. Proj. no.TC-17-02
Subject(s)Radiofrequency
Passive components

NoteA capstone project submitted in partial fulfillment of the requirements for the degree of Bachelor of Science in Engineering Telecommunication Engineering, School of Engineering and Technology
PublisherAsian Institute of Technology
Series StatementCaps. Proj. ; no. TC-17-02
AbstractIf we want to transmit and receive signal at the same time to and from the base station and the antenna, we can not directly transmit the signal without using some device. If we transmit directly, high level RF signals are applied to the receiver antenna and the radio receivers can be damaged and also the receivers may not receive weak signals when high level of noise is present. So to avoid these situations, we have to place the cavity duplexer between the base station and the antenna. This project is about the designing of the cavity duplexer which is used for TETRA base station using COMSOL software. In this duplexer design, closed box model of cavity duplexer is designed and the frequency range of (870.495MHz - 879.105MHz) for TX and range of (825.495MHz - 834.105MHz) for RX are simulated using direct test and cross test frequency domain study in COMSOL software.
Year2017
Corresponding Series Added EntryAsian Institute of Technology. Caps. Proj. ; no. TC-17-02
TypeCapstone Project
SchoolSchool of Engineering and Technology (SET)
DepartmentDepartment of Information and Communications Technologies (DICT)
Academic Program/FoSTelecommunications (TC)
Chairperson(s)Somrak Petcharee;
Examination Committee(s)Teerapat Sanguankotchakorn;Attaphongse Taparugssanagorn;
DegreeCapstone Project (B. Sc.) - Asian Institute of Technology, 2017


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