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Based On Mems Of Millimeter Wave Antenna Reconfigurable Technology Research And Design

Posted on:2014-02-12Degree:MasterType:Thesis
Country:ChinaCandidate:H J WangFull Text:PDF
GTID:2248330398970773Subject:Electronic and communication engineering
Abstract/Summary:PDF Full Text Request
Millimeter Wave is the wave whose wavelength is millimeter and its frequency is from30GHz to300GHz. We use millimeter wave technology to measure the objects which require higher precision. Millimeter wave can transmit the amount of information and the corresponding antenna size can be very small. The millimeter wave communication has good wave masking, wider transmission band, wider range of applications and good stability of communication. In today’s rapid development of communication technology, millimeter wave has got an increasingly important concern. It will occupy a pivotal position in the future of communication.MEMS (Micro-Electro-Mechanical Systems) developing from the integrated circuits is a cross-discipline. MEMS is the field which take multi-disciplinary researches and developments into account. In this paper, the new antenna structures use MEMS technology to achieve the antenna reconfigurability. The core element is the MEMS switch. MEMS switches have excellent properties. The switching speed of MEMS is several orders of magnitude faster than the traditional mechanical relay switch and the MEMS switch can be swithched in the lower voltage quickly.Considering of the Existing Ka-band reconfigurable antenna performance is poor, narrow operating band, the gain is lower, the pattern can not be flexible to change, large errors and other shortcomings, the author of this paper research and design several achieve reconfigurable millimeter wave antenna by using the MEMS switches. The performance is more satisfactory with the simulation results. They have the larger bandwidth, higher gains and better directionality. For the pattern reconfigurable characteristics, MEMS switches are symmetrically placed with antenna integrated design thinking, symmetrical thinking of making one direction performance and easy to reproduce in the other directions, the integrated design is simple and practical. The errors of the designs are also very small.In addition, the antenna’s miniaturization and integration are the goals of many research institutions and wireless communication. Several microstrip antennas sizes are smaller in the designing work in this article, and they have got better performance and could be integrated easily. Millimeter wave MEMS antenna production requires sophisticated micro fabrication techniques, processing technology. We even have encountered the problem that the design of the antenna structure can not be processed using existing technology so we research the patch antenna and processing of MEMS switches and feedback some ideas to the design. The idea of agility in the software engineering (mutual adaptation, self-optimization, feedback, etc.) is applied to the designing of the antennas. In the end, we explore reconfigurable antenna test methods and study the most important factors which can cause test errors.
Keywords/Search Tags:MEMS switch, millimeter wave, microstrip antenna, reconfigurable
PDF Full Text Request
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