Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Wider frequency domain for negative refraction index in a quantized
  composite right-left handed transmission line   The refraction index of the quantized lossy composite right-left handed
transmission line (CRLH-TL) is deduced in the thermal coherence state. The
results show that the negative refraction index (herein the left-handedness)
can be implemented by the electric circuit dissipative factors(i.e., the
resistances \(R\) and conductances \( G\)) in a higher frequency band
(1.446GHz\(\leq\omega\leq \) 15GHz), and flexibly adjusted by the left-handed
circuit components (\(C_l\), \(L_l\)) and the right-handed circuit components
(\(C_r\), \(L_r\)) at a lower frequency (\(\omega\)=0.995GHz) . The flexible
adjustment for left-handedness in a wider bandwidth will be significant for the
microscale circuit design of the CRLH-TL and may make the theoretical
preparation for its compact applications.

2
The categories of this paper are: math
35
The categories of this paper are: mtrl-th
26
The categories of this paper are: bayes-an
21
The categories of this paper are: adap-org
28
The categories of this paper are: alg-geom
19
The categories of this paper are: eess
33
The categories of this paper are: plasm-ph
24
The categories of this paper are: dg-ga
14
The categories of this paper are: math-ph
16
The categories of this paper are: stat
30
The categories of this paper are: q-alg
5
The categories of this paper are: gr-qc
36
The categories of this paper are: cmp-lg
25
The categories of this paper are: patt-sol
20
The categories of this paper are: acc-phys
23
The categories of this paper are: solv-int