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Microwave and millimeter wave antennas based on LTCC technology

Author: QuanWei
Tutor: YanBo
School: University of Electronic Science and Technology
Course: Electromagnetic Field and Microwave Technology
Keywords: LTCC Slot Coupler Miniaturization Wideband Circularly polarized Dual-band
CLC: TN822
Type: Master's thesis
Year: 2011
Downloads: 140
Quote: 0
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Abstract


The antenna is a fundamental part of any radio communication system, with the continuing development of the wireless system, the increasingly high degree of integration of the communication device, its volume is getting smaller and smaller, which the miniaturization of the antenna is of a higher requirements, application LTCC technology can be further reduced antenna volume in order to meet the system requirement of miniaturization. Of LTCC (low temperature co-fired ceramic, Low-Temperature Co-fired Ceramic) quite suitable as a material of antenna miniaturization with its excellent thermal conductivity, high frequency high Q_T, low dielectric loss, high temperature resistance and other characteristics, LTCC specific The multi-dimensional structure and antenna layout from the two-dimensional flat space began to move toward the three-dimensional space, the process to create a more favorable processing conditions for the realization of the miniaturized antenna. The paper first describes the advantages and disadvantages of the process of LTCC technology, features and LTCC technology itself, and then describes the history and trends of the domestic and international development of microwave and millimeter wave LTCC antenna, the last of the objectives and targets. Summed up the basic theory of the microstrip antenna miniaturization of microstrip antenna, wideband, high gain universal method, combined with the research objectives of this article summarizes the application of the technology for LTCC antenna. The two microstrip antenna, designed for the Ka-band (work center frequency of 35GHz) to achieve the purpose of the miniaturization of the antenna, wideband, and circularly polarized by a different design of the structure, respectively. The purpose of the above two types of patch antenna design for wireless communication band (the work of the center frequency of 2.4GHz), respectively, to achieve the miniaturization of the antenna, wideband and dual frequency (2.4GHz and 5.8GHz) antenna impedance bandwidth meet the design requirements. Its main tasks are: Ka-band microstrip gap-coupled parasitic patch antenna: the parasitic patches increase the gain and bandwidth at the same time rectangular parasitic patches traditional rectangular slit replaced by the E-type and H-type instead, the measured impedance bandwidth 22.5% (31.15-39.01GHz). In order to make the antenna gain further increased, the antenna unit of the former is designed for an array antenna, the measured impedance bandwidth of 12% (33.94-38.11GHz); 2, Ka-band microstrip slot coupled circularly polarized antennas: the use of the 90 ° T-type power divider phase difference of 90 ° characteristics circularly polarized antenna, the measured impedance bandwidth of 8.3% (33.56-36.46GHz); wireless communication band patch antenna: the traditional rectangular patch changed to E-type patch achieve antenna small size and broadband function; 4, the radio communication band dual-frequency antenna: through the two slits of the opening of different sizes in different positions on the patch, on an antenna to achieve the purpose of the dual band antenna.

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Radio equipment,telecommunications equipment > Antenna > Antenna: the band and the wave mode of transmission points
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