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It is shown that the characteristics of the IMPATT amplifier depend strongly on the characteristics of the IMPATT diode.
It thus provides a means of optimizing the epitaxial structure and geometry of high-power diode amplifier systems.
Proceedings ArticleDOI
01 Oct 1975
4 Citations
The output power of an amplifier may be much higher than that of an oscillator with the same diode.
The optical efficiency of this amplifier is higher than that of other diode-pumped systems of comparable energy.
This demonstration reveals the great potential of Graphene-based Field Effect Diode in digital nanoelectronics applications as well as analog mixers.
It can, thereby, easily be converted to be used with other diode laser sources.
We also show that a bipolar diode offers more asymmetric current-voltage curves than a unipolar diode.
Here we demonstrate a chiral electromagnetic diode, which is a direct analogue of an electronic diode: its functionality is underpinned by an extraordinarily strong nonlinear wave propagation effect in the same way as the electronic diode function is provided by the nonlinear current characteristic of a semiconductor junction.

Related Questions

Literature reviews on how does an amplifier works?3 answersAn amplifier is a device that increases the amplitude of an input signal to produce a larger output signal. Different types of amplifiers have been developed using various technologies such as Complementary to Metal Oxide Semiconductor (CMOS), Gallium Nitride Monolithic Microwave integrated circuit (GaN MMIC), Gallium Nitride high electron mobility transistor Doherty (GaN HEMT Doherty), Aluminum Gallium Nitride (AlGaN), high electron-mobility transistor (HEMT), Gallium Nitride Metal Semiconductor Field Effect Transistor (GaN MESFET), Silicon Carbide Metal Semiconductor Field Effect Transistor (SiC MESFET), BiCMOS, Metal Oxide Semiconductor (MOS), BiFET, and Gallium Arsenide Pseudomorphic (GaAsP) HEMT. These amplifiers have been used in various applications such as Global System for Mobile Communications (GSM), Enhanced data for global evolution (EDGE), successive approximation, analog-to-digital converter (ADC), flash analog-to-digital converter (ADC), comparator, voltage-controlled oscillator (VCO), and mixer circuits. However, existing literature on power amplifiers has identified several issues that need to be addressed. The amplifier structure typically consists of a voltage source, first amplifying unit, and second amplifying unit. The first amplifying unit amplifies the input signals to generate a first amplified signal, while the second amplifying unit amplifies the input signals to generate a second amplified signal. The output signal is then generated based on the first and second amplified signals. An amplifier also includes a biasing unit, amplifying unit, and Schmitt trigger. The biasing unit generates a bias current independent of the power supply to increase power supply rejection ratio. The amplifying unit receives an input voltage and generates an amplified voltage based on the biasing current. The Schmitt trigger generates and outputs a modified voltage. An amplifier circuit consists of a first series circuit, a second series circuit, and an amplifier stage. The first series circuit includes a current source, a first tap, and a first component configured as a diode. The second series circuit includes a controlled path between a first connection and a second connection of a first transistor and a second tap. The amplifier stage is coupled to the second tap to set the operating point of the amplifier stage.
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