150 150GHz band SSB filter provided for a dual channel receiver

摘要

The present invention relates to a 150 GHz band single side band (SSB) filter installed in a dual channel space weather receiver with a 100 GHz band single side band filter. The externally transmitted 150 GHz band of vertical polarization is transmitted, and the image signal generated by the filter is removed from the horizontal grid 61. The diagonal lattice 62 receiving the vertical polarization component incident through the horizontal grid 61 is separated into two components of equal size, partly reflected and partially transmitted, and the separated components are moved right angle mirrors 63. And two components reflected back through the fixed rectangular mirror 64 are synthesized and sent to the dielectric lens. The polarization component separated by the diagonal lattice 62 is reflected while moving the position at the moving rectangular mirror 63 to determine the signal processing characteristic. And the fixed rectangular mirror 64 reflects the components of the polarization separated by the diagonal lattice again. The DC motor 68 and the precision scaler 69 allow the moving rectangular mirror 63 to move precisely. As the DC motor 68 rotates, the position of the moving right angle mirror 63 attached to the moving right angle mirror moving plate 71 is moved. At this time, the spring 72 contracts and relaxes with the movement of the moving rectangular diameter moving plate 71 to precisely adjust the position of the moving rectangular diameter mirror. The above components are installed on the base plate 73 by using an alignment line 67 and a fixing pin 74. Accordingly, the present invention has the effect that the components can be accurately fixed and finely aligned, and the image removal ratio is also about 20 dB or more.