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    • 52. 发明授权
    • Microstrip antenna and high frequency sensor using microstrip antenna
    • 微带天线和使用微带天线的高频传感器
    • US07773035B2
    • 2010-08-10
    • US11664292
    • 2005-09-29
    • Kensuke MurataHiroshi TsuboiKengo IwataTomoyuki Abe
    • Kensuke MurataHiroshi TsuboiKengo IwataTomoyuki Abe
    • H01Q1/38
    • H01Q3/24H01Q9/0407H01Q9/0442H01Q19/005H01Q19/28
    • A microstrip antenna has feed element 102 and parasitic elements 104, 106 on the front surface of substrate 1. Microwave electrical power is applied to feed element 102. Parasitic elements 104, 106 are connected via through hole type leads passing through substrate 1, to switches upon the rear surface of substrate 1, respectively. By actuating the switches individually, parasitic elements 104, 106 are individually switched between a grounded state and a float state. The direction of the radio beam emitted from the microstrip antenna is varied by selecting which of parasitic elements 104, 106 is grounded and floated. A microwave signal source connects to feed element 102 via an feed line 108 very much shorter than the wavelength, accordingly the transmission losses being low and the efficiency being excellent.
    • 微带天线在基板1的前表面上具有馈电元件102和寄生元件104,106。微波电力被施加到馈电元件102.寄生元件104,106通过穿过衬底1的通孔型引线连接到开关 分别在基板1的后表面上。 通过单独地驱动开关,寄生元件104,106在接地状态和浮置状态之间单独切换。 通过选择寄生元件104,106中的哪一个接地并漂浮来改变从微带天线发射的无线电波束的方向。 微波信号源通过比波长短得多的馈线108连接到馈电元件102,因此传输损耗低,效率优异。