Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Radiation Pattern Reconstruction Techniques for Antenna Measurement
  using Chebyshev Polynomials   A new method of antenna radiation pattern reconstruction using Chebyshev
polynomials was presented in this paper. The analysis starts from the data
measured in the frequency domain, and it corresponds to a direct propagating
between two antennas and reflected propagating waves from the copper plate. The
accuracy of this technique is evaluated at the frequency of 3.35GHz by the
anechoic conditions. As a result, the Chebyshev method shows us a good
performance in the E-plane in the range of -70{\deg} ~0{\deg}.

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The categories of this paper are: hep-th
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The categories of this paper are: nucl-th
16
The categories of this paper are: stat
32
The categories of this paper are: atom-ph
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The categories of this paper are: hep-ex
35
The categories of this paper are: mtrl-th
22
The categories of this paper are: chao-dyn
24
The categories of this paper are: dg-ga
4
The categories of this paper are: cond-mat
19
The categories of this paper are: eess
31
The categories of this paper are: ao-sci
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The categories of this paper are: astro-ph
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The categories of this paper are: gr-qc
30
The categories of this paper are: q-alg
11
The categories of this paper are: hep-lat
25
The categories of this paper are: patt-sol