TAILIEUCHUNG - Multi – element antenna for Dvb – H terminal

In this thesis feasibility to implement multi-element antenna configurations in handheld digital television receivers (Digital Video Broadcasting – Handheld (DVB-H)) has been studied. A two-element antenna for a DVB-H terminal was designed, manufactured and the performance of the antenna was evaluated with simulations and measurements. | HELSINKI UNIVERSITY OF TECHNOLOGY Department of Electrical and Communications Engineering Radio Laboratory Mikko Kyro Multi - element antenna for DVB - H terminal Thesis submitted in partial fulfilment for the degree of Master of Science in Espoo . .2007 Supervisor Prof. Pertti Vainikainen Instructor . Tech. Maria Mustonen HELSINKI UNIVERSITY OF ABSTRACT OF THE MASTER S THESIS TECHNOLOGY_________________________________________________________________________ Author Mikko Kyro Name of the thesis Multi-element Antenna for DVB-H Terminal Date Number of pages 80 Department Department of Electrical and Communications Engineering Professorship S-26 Radio Engineering Supervisor Professor Pertti Vainikainen Instructor . Tech. Maria Mustonen In this thesis feasibility to implement multi-element antenna configurations in handheld digital television receivers Digital Video Broadcasting - Handheld DVB-H has been studied. A two-element antenna for a DVB-H terminal was designed manufactured and the performance of the antenna was evaluated with simulations and measurements. The use of multi-element antenna systems such as multiple-input multiple-output MIMO can enhance the mutual information or reliability of the wireless communications link compared to a single-element antenna system. The drawback of using the MIMO system is the increased complexity of the transceiver. The DVB-H system works at about 470 - 800 MHz frequency range and the relative bandwidth is very broad. This makes antenna designing challenging because an internal antenna in a handheld terminal is inevitably electrically small and broad bandwidth is difficult to achieve. In addition in a handheld terminal there are very few places where DVB-H antennas can be located. Due to low frequency and small size of the terminal it is difficult to implement uncorrelated antenna elements. In this work antenna elements were realized with a coupling element based antenna structure. These antennas are tuned

• Kĩ thuật Viễn thông
• Multi–element antenna
• Dvb–H terminal
• Simulations and measurements
• Implement multi element antenna configurations
• DVB H terminal