Anechoic chamber

• US 3,308,463 A
• Filed: 08/04/1964
• Issued: 03/07/1967
• Est. Priority Date: 08/04/1964
• Status: Expired due to Term

• Current Assignee: William H. Emerson
• Original Assignee: William H. Emerson
• Inventors: Emerson, William H.
• Application Number:
  US04/387,366
• Time in Patent Office: 945 Days
• US Class Current: 342/4
• CPC Class Codes: G01H 3/00 Measuring characteristics of vibrations by using a detector in a fluid G01H7/00, G01H9/00, G01H11/00 take precedence
• CPC Class Codes: G01R 29/105 using anechoic chambers; Chambers or open field sites used therefor test sites used for measuring on other objects than aerials G01R29/0828; wave absorbing devices H01Q17/00

Claims

1. AN ANECHOIC CHAMBER FOR PROVIDING AN ENVIRONMENT SIMULATING THAT OF OUTER SPACE IN WHICH ELECTRONIC DEVICES CAN BE EVALUATED AND STUDIED, SAID CHAMBER COMPRISING A BACK WALL TOWARD WHICH MICROWAVE ENERGY IS DIRECTED FROM THE FRONT OF THE CHAMBER DURING THE EVALUATION AND STUDY OF ELECTRONIC DEVICES IN SAID CHAMBER, A FRONT WALL AND LONGITUDINALLY DISPOSED WALLS CONNECTING SAID FRONT WALL WITH SAID BACK WALL AND COMPRISED OF A CEILING, A FLOOR AND OPPOSED SIDE WALLS, THE INTERIOR WALL SURFACES OF SAID CHAMBER BEING LINED WITH MICROWAVE ENERGY ABSORBING MATERIAL FOR ABSORBING MICROWAVE ENERGY IMPINGED THEREAGAINST, SAID CEILING OF SAID CHAMBER DIVERGING FROM THE FLOOR OF THE CHAMBER AT A CONSTANT RATE BEGINNING AT THE FRONT WALL OF THE CHAMBER AND EXTENDING REARWARDLY A PREPONDERANCE OF THE LONGITUDINAL