Patent ID: 8283730

Claim:
A negative differential resistance (NDR) device including: a first transistor including a first gate, a first input terminal and a first output terminal; and a second transistor with opposite polarity of said first transistor so that if the first transistor is an N type field effect transistor (FET), the second transistor has to be a P type FET, and if the first transistor is a P type FET, the second transistor has to be an N type FET, and said second transistor including a second gate, a second input terminal and a second output terminal; wherein said first input terminal and said second gate are electrically connected and substantially the same voltage is supplied to said first input terminal and said second gate; wherein said first output terminal is electrically connected to said second input terminal; wherein said NDR device provides a negative differential resistance behavior of a conducting current level decreasing while a voltage difference increases between said first input terminal and said second output terminal when a changeable input voltage is applied between the first input terminal and the second output terminal.