Microstrip patch antenna with a shorting pin has a lower resonant frequency, so it especially suits to low frequency portable communication equipments ( such as handsets). 短路针加载微带贴片天线具有较低的谐振频率,特别适用于低频便携式通信设备(如手机)中。
An Improved Model for the Rectangular Microstrip Antenna of Tunable Resonant Frequency 可调谐谐振频率的矩形微带天线改进模型
In this paper, broadband microstrip antenna elements have been analyzed for resonant frequency, radiation patterns and input impedence. 本文分析了一类宽频带微带天线元,它们是将圆贴片微带天线进行适当变形而构成。
Compared to rectangular and circular patch antenna loaded with a shorting pin, triangular patch antenna loaded with a shorting pin has lower resonant frequency. 与短路针加载矩形和圆形贴片天线相比,短路针加载三角形贴片天线具有更低的谐振频率。
Both experimental and numerical results show that the Minkowski fractal antenna has a lower resonant frequency than the square loop antenna of the same size. 实验数据和数值结果都表明,Minkowski分形环天线比同尺寸的方环天线具有更低的谐振频率。
The meander line section is equivalent to an inductor in this model, and then the equation between the resonant wavelength and the antenna self-inductance is obtained, and further the optimization method is applied to calculate the resonant frequency of meander line monopole antennas. 电感电路模型将单个弯折节等效为电感,推导出天线的谐振波长与弯折节参数之间的关系式,进一步应用最优化方法计算出弯折线单极子天线的谐振频率。
All the analyses show that dual-Koch fractal antenna has much lower resonant frequency than single-koch fractal antenna, and the resonant frequency decreases with increase of the indentation angle. 研究结果表明,双Koch分形天线比单Koch分形天线具有更低的谐振频率,而且随着弯折角的增加而降低。
First, this paper researched the oscillator theory, which gave the oscillation condition of active antenna, and the cavity modeling theory of the microstrip antenna, which gave the relationship between the size and impendence of microstrip patch antenna and that between the size and resonant frequency. 首先研究了有源天线的振荡器理论,给出了有源天线的振荡条件;微带贴片天线的空腔模型理论,给出了天线尺寸与阻抗和谐振频率的关系。
Secondly, The Genetic algorithm is applied successfully to optimize the design of dual-frequency bow-tie microstrip antenna, By optimizing the calculation formula of resonant frequency for bow-tie microstrip antenna, the right coefficient can be found; 其次,将遗传算法成功应用到双频蝶形微带天线的优化中,首先对谐振频率计算公式进行优化,确定计算公式的系数;
When introduced the fractal to the design of Sierpinski microstrip antenna, we found out that the first resonant frequency is higher than the conventional triangle microstrip antenna. 当把分形的概念直接运用到Sierpinski微带天线的时候,发现其第一个谐振频率点相对普通的三角形贴片天线有显著的提高。
The radiation principle of square ring antenna is studied in this thesis. The influences of antenna configuration parameters on antenna performance are analyzed. A kind of multi-frequency antenna using coplanar rings are proposed and designed. Each resonant frequency of the antennas can be adjusted independently. 分析了方环形天线的辐射原理,研究了各参数对方天线谐振频率地影响,研制了一种各谐振频率可独立调整的新型小型平面天线,该类天线采用同心环形结构。
The structure of antenna is designed on two-tier microstrip antenna, between which is air cavity, leading to the increase of bandwidth and the regulation of resonant frequency. 天线结构是采用双层重叠的微带贴片天线来设计的,而且在两层的介质层中分别引入了空气腔,它起到了增加带宽、调节谐振频率的作用。
Additionally, we establish the equivalent circuit model of the antenna structure. By changing the parameters of the equivalent model, we can adjust the resonant frequency of the antenna. 此外还对天线模型建立了等效电路进行分析,调节等效电路模型的电抗参数来改变天线的谐振频率。
This antenna uses the combined feeding structure and has several strips then generates more than one resonant path to excite different frequency points. 该天线采用复合馈电结构及多枝节多谐振路径实现不同频点的激励。