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Graphene distributed amplifier

A distributed amplifier and graphene technology, applied in amplifiers, amplifiers with distributed constants in the coupling network, improved amplifiers to expand bandwidth, etc., to achieve the effect of increasing the gain-bandwidth product

Inactive Publication Date: 2019-11-26
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the existing graphene distributed amplifier design method can improve the gain-bandwidth product, there is still a lot of room for improvement, and the gain-bandwidth product needs to be further improved

Method used

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  • Graphene distributed amplifier

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Embodiment 1

[0026] According to an aspect of one or more embodiments of the present disclosure, there is provided a graphene distributed amplifier.

[0027] The present invention is realized through the following technical solutions, as figure 1 As shown, the graphene distributed amplifier consists of five parts:

[0028] The input circuit 1, the amplifying unit circuit 2, the output circuit 3, the gate bias circuit 4 and the drain bias circuit 5 are five parts on the same substrate, adopting a microstrip structure or a coplanar waveguide structure. When the circuit is working, the signal enters the amplifying circuit 1 through the input circuit, the gate bias circuit 4 adjusts the input signal, the signal is amplified in the amplifying unit circuit 2, and then output through the output circuit 3, and the drain bias circuit 5 can adjust the output signal.

[0029] The graphene distributed amplifier adopts a cascode structure, which can achieve a large bandwidth and solve the problem of ...

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Abstract

The invention discloses a graphene distributed amplifier. The amplifier comprises an input circuit, a plurality of cascaded amplification unit circuits, an output circuit, a gate bias circuit and a drain bias circuit which are arranged on the same substrate; the input circuit and the drain bias circuit are respectively connected with a grid electrode and a drain electrode of the first-stage amplification unit circuit; the drain electrode and the grid electrode of the last-stage amplification unit circuit are respectively connected with the output circuit and the grid electrode biasing circuit;a signal enters the amplification unit circuit through the input circuit, the grid bias circuit adjusts the input signal, the amplification unit circuit amplifies the signal by adopting a cascode structure, the output circuit outputs the cascaded and amplified signal, and the drain bias circuit adjusts the output signal.

Description

technical field [0001] The invention belongs to the technical field of optimized design of distributed amplifiers, in particular to a graphene distributed amplifier. Background technique [0002] Graphene is a two-dimensional honeycomb lattice structure material formed by a single layer of carbon atoms tightly packed. This special crystal structure makes graphene ultra-thin, ultra-high electron mobility, ultra-high saturation drift velocity and ultra-high thermal conductivity. and other characteristics. Graphene is a semiconductor material with good electrical properties. Its typical saturation drift velocity of carriers is 5×107cm / s, and its mobility is greater than 2×105cm2 / V s. The material with the highest efficiency has broad application prospects in the field of microelectronics and radio frequency. [0003] Distributed amplifiers have flat gain, good gain-bandwidth product and good input-output matching, and are currently widely used in the design of ultra-wideband ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03F3/60H03F1/48H03G3/30
CPCH03F1/483H03F3/607H03G3/30
Inventor 王向华
Owner SHANDONG UNIV OF SCI & TECH
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