Antenna using variable capacitance element and wireless communication apparatus using the same
一种可变电容、天线的技术,应用在电气元件、电气短天线、天线等方向,能够解决耗时等问题,达到抑制互调失真、减小发热量、抑制波形失真的效果
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[0054] Hereinafter, the antenna of the present invention will be described in detail with reference to the drawings.
[0055] Figure 1 to Figure 5 Each shows the antenna of the first embodiment of the present invention. figure 1 It is a schematic diagram which shows the antenna of 1st Embodiment of this invention. In this example, it is a frequency variable antenna composed of an antenna element 11 composed of a conductor, a feed point 12 , a ground 13 , and a capacitance variable capacitor portion 14 . figure 2 It is an equivalent circuit diagram of the capacitance variable capacitor part. exist figure 2 In the shown equivalent circuit diagram, Ct is a capacitance variable capacitor. L2 is a yoke coil including an inductance component for RF attenuation for supplying a control voltage (bias signal), and C11 is a DC blocking capacitive element connected to the antenna element side terminal. in addition, Figure 3 ~ Figure 5 Another example of a capacitance variable c...
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