| 摘要 |
PURPOSE:To optimize the tuning and matching by employing a single tuning type band-pass filter comprising a 1/2 wavelength or 1/4 wavelength resonance line constituted by a microstrip line and using a flexible conductor line for the signal input and output part so as to couple them in terms of high frequencies. CONSTITUTION:A urethane clad copper wire (nearly 0.2mm-0.4mm) is used for flexible conductor lines 4, 5, one end is connected electrically and mechanically to the end of the input or output line by solder, the other end of the flexible conductor line 4 or 5 not fixed is arranged closely to the resonance line 3 to obtain a single tuning band pass characteristic by using the resonance line. The flexible conductor lines 4, 5 show a state adhered closely to the resonance line 3 in figure. Moreover, the 1/2 wavelength type resonance line 3 is shown in this case, but the 1/2 wavelength type line offers the similar effect. Furthermore, the similar insulation effect is obtained by applying cover coat to the resonance line 3 to attain the DC blocking.
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