Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Intelligent resonance tracking of a microwave plasmonic resonator for
  compact wireless sensors   Plasmonic sensing has been in the spotlight for decades, the concept and
applications of which have been generalized to spoof surface plasmons (SSPs) in
the microwave band. Here, we report a compact and wireless sensor within a
printed circuit board size of 18 mm * 12 mm, tracking the resonance frequency
shift of a microwave plasmonic resonator via a software-defined scheme. The
microwave plasmonic resonator yields a deep-subwavelength size, enhanced
sensitivity, and a good electromagnetic compatibility performance. The
software-defined resonance tracking scheme minimalizes the hardware circuit and
the consumed spectrum resources, and makes the detection intelligently adaptive
to the target resonance, with a signal-to-noise ratio of 69 dB and a data rate
of 2272 measuring points per second. The sensor has been validated via acetone
vapor concentration sensing, while its applications can be widely extended by
replacing the transducer materials. This approach provides compact, sensitive,
accurate and intelligent solutions for resonant sensors in the Internet of
things (IoT).

30
The categories of this paper are: q-alg
2
The categories of this paper are: math
28
The categories of this paper are: alg-geom
8
The categories of this paper are: hep-ex
37
The categories of this paper are: supr-con
26
The categories of this paper are: bayes-an
29
The categories of this paper are: funct-an
3
The categories of this paper are: physics
23
The categories of this paper are: solv-int
1
The categories of this paper are: cs
12
The categories of this paper are: nucl-th
35
The categories of this paper are: mtrl-th
36
The categories of this paper are: cmp-lg
24
The categories of this paper are: dg-ga
27
The categories of this paper are: comp-gas
9
The categories of this paper are: nlin