小型化宽带可重构手机天线设计
发布时间：2018-08-07 08:28
【摘要】：随着3G乃至4G技术的发展,智能手机获得了越来越多消费者的青睐并且逐渐取代了功能手机。但是,智能手机时代的到来必然会给天线设计者带来一个严峻的问题-手机天线的设计难题。为了解决这一难题,在总结前人天线设计方案设计的基础上,四种可以适用于窄边框手机并且能够覆盖LTE/WWAN(LTE700/2300/2500,GSM850/900/1800/1900/UMTS2100)的多个频段的可重构天线设计方案被提了出来。首先,本论文提出了一种能够在在环天线和单极子天线之间切换自由切换的谐振结构可重构天线方案,该天线结构简单并且具有宽度为7mm的窄边框结构。本方案中的天线不仅能够具有窄边框天线的结构特性,而且能够同时拥有单极子天线和环天线的共同性能优势。通过控制电路控制环天线短路点的开断能够将天线的结构在环天线和单极子天线之间切换。最终设计出来的天线能够覆盖LTE/WWAN(GSM850/900/1800/1900/UMTS2100/LTE2300/2500)七个频段。其次,本论文提出了一种具有窄边框特性的谐振长度可重构天线方案。不同于谐振结构可重构天线设计方案,这种可重构天线是将天线的谐振长度进行可重构的。通过控制两个二极管的导通与否来控制天线的谐振长度。最终设计出来的天线能够覆盖LTE/WWAN(GSM850/900/1800/1900/UMTS2100/LTE2300/2500)七个频段。再次,本文提出了一种具有双天线结构的可重构天线方案,该方案解决系统延长地板对天线性能影响这一问题。本方案中的天线由两个分别能覆盖低频段(GSM850/900)和高频段(GSM1800/1900/UMTS2100/LTE2300/2500)的主天线构成,通过改变控制电路的工作状态便可以控制两个天线的工作与否。最终综合起来的带宽能够覆盖GSM850/900/1800/1900/UMTS2100/LTE 2300/2500七个频段。最后,本文提出了一种匹配电路可重构天线方案。该天线具有两组用于调节调节天线低频段阻抗特性的匹配电路,通过控制电路便可以控制两组匹配电路的通断。采用这种匹配电路可重构技术的天线的优势在于能够设计出具有多频带特性的手机天线。最终设计出来的天线能够覆盖LTE/WWAN(LTE700/2300/2500,GSM850/900/1800/1900/UMTS2100)八个频段。
[Abstract]:With the development of 3G and 4G technology, more and more consumers favor smartphones and gradually replace functional phones. However, the advent of the smart phone era will inevitably bring a serious problem to antenna designers-the design of mobile phone antennas. In order to solve this problem, four reconfigurable antenna designs which can be applied to narrow border mobile phones and can cover LTE/WWAN (LTE700 / 2300 / 2500N GSM 850 / 900 / 1900 / 1900 / UMTS2100) have been proposed on the basis of summarizing the previous antenna design schemes. Firstly, this paper proposes a resonant reconfigurable antenna scheme which can switch freely between the loop antenna and the monopole antenna. The antenna is simple in structure and has a narrow frame structure with a width of 7mm. The antenna in this scheme not only has the structural characteristics of narrow border antenna, but also has the common performance advantages of monopole antenna and loop antenna. The structure of the loop antenna can be switched between the loop antenna and the monopole antenna by controlling the short circuit of the loop antenna. The designed antenna can cover seven bands of LTE/WWAN (GSM850/900/1800/1900/UMTS2100/LTE2300/2500). Secondly, a resonant length reconfigurable antenna scheme with narrow frame characteristics is proposed. Different from the design scheme of the resonant reconfigurable antenna, this reconfigurable antenna reconstructs the resonant length of the antenna. The resonant length of the antenna is controlled by controlling the conduction of the two diodes. The designed antenna can cover seven bands of LTE/WWAN (GSM850/900/1800/1900/UMTS2100/LTE2300/2500). Thirdly, a reconfigurable antenna scheme with dual antenna structure is proposed, which solves the problem that the extended floor of the system affects the antenna performance. The antenna in this scheme is composed of two main antennas which can cover the low frequency band (GSM850/900) and the high frequency band (GSM1800/1900/UMTS2100/LTE2300/2500) respectively. The operation of the two antennas can be controlled by changing the working state of the control circuit. The combined bandwidth will eventually cover seven bands of GSM850/900/1800/1900/UMTS2100/LTE 2300 / 2, 500. Finally, a reconfigurable antenna scheme for matching circuits is proposed. The antenna has two sets of matching circuits used to adjust the impedance characteristics of the antenna in low frequency band. The on-off of the two matching circuits can be controlled by the control circuit. The advantage of this reconfigurable matching circuit antenna is that it can design a mobile phone antenna with multi-band characteristics. The resulting antenna can cover eight bands of LTE/WWAN (LTE 700 / 2300 / 2500 GSM 850 / 900 / 1800 / 1900 / UMTS2100).
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN828.6
本文编号：2169463
[Abstract]:With the development of 3G and 4G technology, more and more consumers favor smartphones and gradually replace functional phones. However, the advent of the smart phone era will inevitably bring a serious problem to antenna designers-the design of mobile phone antennas. In order to solve this problem, four reconfigurable antenna designs which can be applied to narrow border mobile phones and can cover LTE/WWAN (LTE700 / 2300 / 2500N GSM 850 / 900 / 1900 / 1900 / UMTS2100) have been proposed on the basis of summarizing the previous antenna design schemes. Firstly, this paper proposes a resonant reconfigurable antenna scheme which can switch freely between the loop antenna and the monopole antenna. The antenna is simple in structure and has a narrow frame structure with a width of 7mm. The antenna in this scheme not only has the structural characteristics of narrow border antenna, but also has the common performance advantages of monopole antenna and loop antenna. The structure of the loop antenna can be switched between the loop antenna and the monopole antenna by controlling the short circuit of the loop antenna. The designed antenna can cover seven bands of LTE/WWAN (GSM850/900/1800/1900/UMTS2100/LTE2300/2500). Secondly, a resonant length reconfigurable antenna scheme with narrow frame characteristics is proposed. Different from the design scheme of the resonant reconfigurable antenna, this reconfigurable antenna reconstructs the resonant length of the antenna. The resonant length of the antenna is controlled by controlling the conduction of the two diodes. The designed antenna can cover seven bands of LTE/WWAN (GSM850/900/1800/1900/UMTS2100/LTE2300/2500). Thirdly, a reconfigurable antenna scheme with dual antenna structure is proposed, which solves the problem that the extended floor of the system affects the antenna performance. The antenna in this scheme is composed of two main antennas which can cover the low frequency band (GSM850/900) and the high frequency band (GSM1800/1900/UMTS2100/LTE2300/2500) respectively. The operation of the two antennas can be controlled by changing the working state of the control circuit. The combined bandwidth will eventually cover seven bands of GSM850/900/1800/1900/UMTS2100/LTE 2300 / 2, 500. Finally, a reconfigurable antenna scheme for matching circuits is proposed. The antenna has two sets of matching circuits used to adjust the impedance characteristics of the antenna in low frequency band. The on-off of the two matching circuits can be controlled by the control circuit. The advantage of this reconfigurable matching circuit antenna is that it can design a mobile phone antenna with multi-band characteristics. The resulting antenna can cover eight bands of LTE/WWAN (LTE 700 / 2300 / 2500 GSM 850 / 900 / 1800 / 1900 / UMTS2100).
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN828.6
【共引文献】
相关硕士学位论文 前3条
1 周林亚;移动终端天线及MIMO多天线研究[D];西安电子科技大学;2013年
2 杨涛;小型化宽频段天线的研究[D];杭州电子科技大学;2014年
3 孙长文;应用于移动终端的多频LTE天线设计[D];安徽大学;2015年
，本文编号：2169463
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