Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Triple-Mode Single-Transistor Graphene Amplifier and Its Applications   In this article, we propose and experimentally demonstrate a triple-mode
single-transistor graphene amplifier utilizing a three-terminal back-gated
single-layer graphene transistor. The ambipolar nature of electronic transport
in graphene transistors leads to increased amplifier functionality as compared
to amplifiers built with unipolar semiconductor devices. The ambipolar graphene
transistors can be configured as n-type, p-type, or hybrid-type by changing the
gate bias. As a result, the single-transistor graphene amplifier can operate in
the common-source, common-drain, or frequency multiplication mode,
respectively. This in-field controllability of the single-transistor graphene
amplifier can be used to realize the modulation necessary for phase shift
keying and frequency shift keying, which are widely used in wireless
applications. It also offers new opportunities for designing analog circuits
with simpler structure and higher integration densities for communications
applications.

3
The categories of this paper are: physics
14
The categories of this paper are: math-ph
16
The categories of this paper are: stat
21
The categories of this paper are: adap-org
28
The categories of this paper are: alg-geom
11
The categories of this paper are: hep-lat
6
The categories of this paper are: astro-ph
1
The categories of this paper are: cs
34
The categories of this paper are: chem-ph
30
The categories of this paper are: q-alg
8
The categories of this paper are: hep-ex
29
The categories of this paper are: funct-an
25
The categories of this paper are: patt-sol
17
The categories of this paper are: q-fin
5
The categories of this paper are: gr-qc
13
The categories of this paper are: quant-ph