基于超寬帶系統(tǒng)應(yīng)用的小型化平面陷波天線設(shè)計
[Abstract]:Ultra-wideband (UWB) technology has a broad development prospect and application space because of its characteristics. As an important part of UWB system, antenna performance will affect the whole system. Its performance is directly related to the performance of the whole UWB system, so its significance is self-evident. The purpose of this paper is to design a miniaturized notch UWB antenna and ensure that its performance can meet the requirements of UWB system. The first half of this paper is mainly the theoretical part of UWB antenna. Firstly, the research background and research progress of UWB antenna at home and abroad and the characteristics of UWB antenna are introduced and summarized. Then, the main performance parameters, classification and working principle of UWB antenna, the design and implementation of notch wave, the method of bandwidth broadening and the design requirements of UWB antenna are introduced and analyzed in detail. The second half is the design of antenna. Based on the basic theory and design method, a miniaturized UWB antenna and three kinds of notch characteristic miniature UWB antenna are proposed. Before introducing the UWB antenna, this paper attempts to use the current distribution on the antenna surface to discuss the notch characteristics of the UWB antenna. In the design of the first miniaturized UWB antenna, the common coplanar waveguide structure is used, and the antenna is miniaturized. The main research object and work of this paper is the design of a miniaturized UWB antenna with multi-stopband characteristics. In the second section of the notch antenna, the symmetrical ladder L-shaped slot is introduced into the floor, and the very ideal trapping characteristic is realized by simple method. In the third section of the notch antenna, not only the slotted method of introducing symmetric L-shaped branches is used, but also the improved U-shaped slot is introduced into the feeder line, and the independent and adjustable trapping characteristics are finally realized. In the design of the fourth antenna, the L-shaped slot is successfully introduced into the floor and the symmetrical L-shaped segment is introduced into the radiation patch. The ultra-wideband (UWB) and bandstop characteristics of the UWB antenna are realized while the antenna is miniaturized. The antenna gain is stable in the whole frequency band and the far field pattern is omnidirectional. The antenna test results are in good agreement with the simulation results.
【學(xué)位授予單位】:華中科技大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2014
【分類號】:TN820;TN925
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