The application of high frequency circulator

   Everybody knows, circulator has one-way transmission character, incident signal can be passed smoothly (insert caustic to be under 1db) , reflection signal is absorbed as a result of resistor be absorptioned and cannot pass (return loss can achieve 60db above) . It is used extensively at radio to blast off, put park catapult and between emissive antenna, the open a way that because launch aerial,prevents or short circuit cause aerial system to break the situation that compound to fall, because standing wave builds the attaint of parts of an apparatus of enlarge of power of the class after didymous catapult.

   Here the adjuster of passive stepless power that I introduce a make it of one-way transmission character that uses circulator to everybody. In circuit of enlarge of high frequency power, general it is the adjustment that the reactance character that uses PIN diode will come achieve output power, this kind of power adjusts circuit to have its insufficient place, when result put a canal to slant after place setting, have n of drive of a certain first-rate commonly to it corresponding, make its output achieves groove, drive is too little, the influence believes comparing of a confusion of voices; Drive is too big meeting is caused nonlinear lack fidelity. The passive power regulator that uses circulator place make it will be nonexistent this problem, it is strung together by two circulator receive and become, string together in its one is joined between wiring and ground adjustable capacitor, if plan institute is shown. Adjuster of this passive power adds stick catapult and between emissive antenna, the move since odd circulator A outputs the action of power adjustment, the move since circulator B isolates protective effect, adjust capacitance C, make circuit happening is broken match, the one part that exports power will become reflection power to be absorbed by resistor A place, the capacity size of C, affecting catoptric size, through adjusting so capacitance C achieved control to output the purpose of power volume. Thinking stalks of grain