SUMMARYAs a structure that reduces radiation from a transmission line with input and output ports, a transmission line with a side plate is proposed in this paper. The radiation field by the traveling wave current on the transmission line is derived and the radiated power is analytically derived. From this analysis, it is found that in order to reduce radiation loss, (1) the transmission line height should be reduced, (2) the characteristic impedance be increased, (3) the propagation constant of the current be increased, and (4) the distance to the side plate be reduced. Further, a transmission line with a side plate is fabricated and the effect of radiation reduction is compared with the theoretical result and demonstrates the validity of the paper.
The design of the gas channel integrated cell was reconsidered to reduce the cell thickness without increasing the cell resistance. The cell resistance was decreased by the reduction of the current collection distance. Furthermore, the changing of the current collection window position also decreased the cell resistance. The new design cell showed the same power density as the former design cell, indicating that the thickness of the cell was successfully reduced without any decrease of the cell power output. The power output of the new design cell was 1.6 times larger than that of the planar cell with the same cell size. The large power output per cell was a great advantage of the GCI cell.
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