Browse Prior Art Database

Esaki Diode Square Wave Generator

IP.com Disclosure Number: IPCOM000098222D
Original Publication Date: 1960-Apr-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 26K

Publishing Venue

IBM

Related People

Lanza, C: AUTHOR

Abstract

This fast square wave generator utilizes an Esaki diode as the active element and a transmission line for timing control.

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Esaki Diode Square Wave Generator

This fast square wave generator utilizes an Esaki diode as the active element and a transmission line for timing control.

The transmission line is terminated in a resistor R which is low enough, relative to the characteristic impedance of the line, to produce a reflection coefficient of about minus one half. This resistor, in conjunction with the battery and load resistor R(L), also serves to bias the Esaki diode to its negative resistance region. The characteristic impedance of the line is high enough to intercept the two positive resistance regions of the diode characteristic.

When the diode switches from state 1 to state 2 on the curve, a positive surge is sent down the transmission line and is reflected back to the diode with about half its initial amplitude and with reversed polarity. Thus, the diode is triggered from state 2 back to state 1. This new negative polarity wave front now travels down the line and is in turn reflected with reversed polarity. The process repeats itself indefinitely.

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