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    • 3. 发明申请
    • LOW PROFILE, BROAD BAND MONOPOLE ANTENNA WITH HEAT DISSIPATING FERRITE/POWDER IRON NETWORK AND METHOD FOR CONSTRUCTING THE SAME
    • 低配置型,带散热片/粉末铁网的宽带单孔天线及其构造方法
    • US20120112974A1
    • 2012-05-10
    • US13383271
    • 2010-07-21
    • Gary A. MartekHenry R. Jarman
    • Gary A. MartekHenry R. Jarman
    • H01Q9/00H01Q13/00
    • H01Q1/3275H01Q5/321H01Q5/335H01Q9/30H01Q9/36Y10T29/49016
    • An antenna operable over a predetermined range of frequency includes a transmission line, a transformer network connected to one end of the transmission line, and at least one ferrite/powder iron network connected to an opposite end of the transformer network. The ferrite/powder iron network changes the effective electrical length of the antenna such that as the frequency of operation changes, the current distribution above and below the network changes in corresponding manner. A second ferrite/powder iron network may be serially positioned with respect to the other network, wherein both function to reduce the current thereabove. Accordingly, as the frequency of operation increases, the electrical height of the antenna decreases. The network also encompasses a way to safely dissipate otherwise destructive heat created by the operation of the antenna system at high radio-frequency power.
    • 在预定频率范围内可操作的天线包括传输线,连接到传输线的一端的变压器网络以及连接到变压器网络的相对端的至少一个铁氧体/粉末铁网络。 铁氧体/粉末铁网络改变天线的有效电气长度,使得随着操作频率的变化,网络上下电流分布以相应的方式变化。 第二铁氧体/粉末铁网络可以相对于另一个网络串联定位,其中两者都起到减少上述电流的作用。 因此,随着操作频率的增加,天线的电气高度减小。 该网络还包括以高射频功率安全地消散由天线系统的操作产生的破坏性热量的方法。