PatentBrief

Inventor

Edwin H Armstrong

Patents indexed

1

Year range

1920

Associated with

Years active

1920

Total patents

1

Most recent

1920

Domains

telecommunicationsconsumer_electronics

Activity by decade

1920s
1

Patents

1

Career timeline

1 patents, in 1920

Dot size = forward citations

19201921

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US 1342885·1920·Individual

How Edwin Armstrong Invented the Superheterodyne Radio Receiver

A foundational 1920 patent by Edwin Armstrong that describes the superheterodyne circuit, the technology that allowed radios to tune into specific stations clearly and reliably.

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