Self-powered pulse radio transmitter

• US 3,230,455 A
• Filed: 12/05/1962
• Issued: 01/18/1966
• Est. Priority Date: 12/05/1962
• Status: Expired due to Term

• Current Assignee: James P. Kosta Jr
• Original Assignee: James P. Kosta Jr
• Inventors: Kosta, James P. Jr.
• Application Number:
  US04/242,413
• Time in Patent Office: 1,140 Days
• US Class Current: 375/295
• CPC Class Codes: H04B 1/04 Circuits

Claims

1. A PULSED RADIO TRANSMITTER FOR SELECTIVELY TRANSMITTING A PULSED CONTINUOUS ELECTROMAGNETIC WAVE;

SAID TRANSMITTER COMPRISING A TRANSISTOR HAVING A BASE ELECTRODE, A COLLECTOR ELECTRODE AND AN EMITTER ELECTRODE;

A SELECTIVELY OPERATED SOURCE OF ALTERNATING CURRENT FOR SUPPLYING ENERGY TO SAID TRANSISTOR;

PURE RESISTIVE MEANS FOR CONNECTING SAID BASE ELECTRODE TO ONE SIDE OF SAID SOURCE TO APPLY TO THE BASE ELECTRODE A POTENTIAL AT EVERY OTHER HALF-CYCLE OF THE ALTERNATING CURRENT TO RENDER SAID TRANSISTOR CONDUCTIVE;

MEANS FOR DIRECTLY CONNECTING SAID EMITTER ELECTRODE TO THE OTHER SIDE OF SAID SOURCE TO SUPPLY A RETURN PATH FOR THE CURRENT APPLIED TO SAID BASE ELECTRODE;

A TANK CIRCUIT TUNED TO THE FREQUENCY OF THE CONTINUOUS WAVE FOR PRODUCING OSCILLATIONS AT SAID FREQUENCY WHEN PULSED WITH CURRENT FROM SAID SOURCE;

MEANS FOR DIRECTLY CONNECTING SAID COLLECTOR ELECTORDE TO ONE SIDE OF SAID TANK CIRCUIT TO SUPPLY CURRENT FROM SAID SOURCE TO SAID TANK CIRCUIT WHEN SAID TRANSISTOR BECOMES CONDUCTIVE;

MEANS FOR DIRECTLY CONNECTING THE OTHER SIDE OF SAID TANK CIRCUIT TO THE ONE SIDE OF SAID SOURCE TO SUPPLY A RETURN PATH FOR THE CURRENT APPLIED TO THE TANK CIRCUIT FROM SAID COLLECTOR ELECTRODE;

AND A FEEDBACK PATH;

SAID FEEDBACK PATH COMPRISING A FREQUENCY STABILIZING CRYSTAL;

MEANS FOR DIRECTLY CONNECTING ONE SIDE OF SAID CRYSTAL TO SAID ONE SIDE OF THE TANK CIRCUIT AND MEANS FOR DIRECTLY CONNECTING THE OTHER SIDE OF SAID CRYSTAL TO SAID BASE ELECTRODE.