Emitter coupled high frequency amplifier

Claim 1

AN EMITTER COUPLED TRANSISTOR AMPLIFIER INCLUDING IN COMBINATION, A CURRENT SOURCE, POTENTIAL SUPPLY MEANS, FIRST AND SECOND TRANSISTOR MEANS MATCHED TO EACH OTHER AND HAVING SUBSTANTIALLY THE SAME EMITTER RESISTANCE CHARACTERISTICS, SAID FIRST AND SECOND TRANSISTOR MEANS EACH HAVING AN EMITTER, A BASE AND A COLLECTOR, SAID EMITTERS OF SAID FIRST AND SECOND TRANSISTOR MEANS CONNECTED TO A COMMON TERMINAL, RESISTANCE MEANS CONNECTED TO SAID COMMON TERMINAL, FIRST TRANSFORMER MEANS HAVING A WINDING CONNECTED BETWEEN THE BASE OF THE FIRST TRANSISTOR MEANS AND THE BASE OF THE SECOND TRANSISTOR MEANS FOR PROVIDING A SIGNAL INPUT TO SAID AMPLIFIER, SECOND TRANSFORMER MEANS HAVING A WINDING CONNECTED BETWEEN SAID POTENTIAL SUPPLY MEANS AND THE COLLECTOR OF SAID SECOND TRANSISTOR MEANS PROVIDING A SIGNAL OUTPUT FOR SAID AMPLIFIER, MEANS CONNECTING THE COLLECTOR OF SAID FIRST TRANSISTOR MEANS TO SAID POTENTIAL SUPPLY MEANS SO THAT SAID FIRST TRANSISTOR MEANS HAS A COMMON COLLECTOR CONFIGURATION, MEANS A.C. COUPLING THE BASE OF SAID SECOND TRANSISTOR MEANS TO A POINT OF REFERENCE POTENTIAL SO THAT SAID SECOND TRANSISTOR MEANS HAS A COMMON BASE CONFIGURATION, MEANS CONNECTING SAID RESISTANCE MEANS TO SAID CURRENT SOURCE, AND MEANS CONNECTED BETWEEN THE EMITTERS AND BASES OF SAID FIRST AND SECOND TRANSISTOR MEANS FOR CONTROLLING THE EMITTER CURRENT OF SAID FIRST AND SECOND TRANSISTOR MEANS TO THEREBY PROVIDE AUTOMATIC GAIN CONTROL OF SAID AMPLIFIER.