Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Experimental characterization of negative refractive index material NRM
  at Ka band   In this paper, we discuss the experimental characterization of a negative
refractive material NRM at Ka band using LR labyrinth Ring and wire array WA.
We describe in detail the the LR and wire array characterization separately,
and after that the combined experimental results, for NRM are reported. The LRs
analytical and simulation study is not new but design in Ka band and different
experimental procedure for the characterization of the negative refractive
index is the novelty of this paper. For performing a negative refractive index
experiment we made prism of 150 Prism angle . We get enhanced transmittance of
more than 20 dB from background, at a negative angle of refraction. The values
of the negative refractive index in a band of about 1 G Hz around 31 GHz are
retrieved from the experimental data.

34
The categories of this paper are: chem-ph
30
The categories of this paper are: q-alg
35
The categories of this paper are: mtrl-th
37
The categories of this paper are: supr-con
12
The categories of this paper are: nucl-th
22
The categories of this paper are: chao-dyn
24
The categories of this paper are: dg-ga
9
The categories of this paper are: nlin
31
The categories of this paper are: ao-sci
10
The categories of this paper are: q-bio
29
The categories of this paper are: funct-an
17
The categories of this paper are: q-fin
32
The categories of this paper are: atom-ph
33
The categories of this paper are: plasm-ph
1
The categories of this paper are: cs
15
The categories of this paper are: nucl-ex