| 摘要 |
PURPOSE:To stabilize the oscillating frequency of a cavity oscillator against change in humidity without using any drying agent, by supplying dry air in a cavity oscillator through the use of dehydrator having sufficiently greater drying ability. CONSTITUTION:Transmission output of a radio equipment 1 is radiated from a transmission parabola antenna 3 via a waveguide 2. On the other hand, the air dried from a dehydrator 5 consisting of an air pump 7 and a lot of drying agents 6 is delivered to a waveguide 2 via a pipe 4 to reduce the transmission loss of the waveguide 2 due to much humidity and delivered to a cavity oscillator 9 via a pipe 8. Thus, dried air is always delivered in a cavity oscillator 9 and the cavity resonance frequency is held stably. Then, the maintenance can be reduced and stable transmission conditioncan can be assured. |
