Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Discretization of Annular-Ring Diffraction Pattern for Large-Scale
  Photonics Beamforming   A solid-state active beamformer based on the annular-ring diffraction pattern
is proposed for an integrated photonic platform. Such a circularly symmetric
annular-ring aperture achieves radiating element limited FOV. Furthermore, it
is demonstrated that a multi-annular-ring aperture with a fixed linear density
of elements maintains the beam efficiency for larger apertures while reducing
the beamwidth and side-lobe-level (SLL). A 255-element multi-annular-ring OPA
with active beamforming is implemented in a standard photonics process. 510
phase and amplitude modulators enable beamforming and beam steering using this
aperture. A row-column drive methodology reduces the required electrical
drivers by more than a factor of 5.

9
The categories of this paper are: nlin
28
The categories of this paper are: alg-geom
20
The categories of this paper are: acc-phys
23
The categories of this paper are: solv-int
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The categories of this paper are: econ
34
The categories of this paper are: chem-ph
25
The categories of this paper are: patt-sol
2
The categories of this paper are: math
33
The categories of this paper are: plasm-ph
29
The categories of this paper are: funct-an
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The categories of this paper are: chao-dyn
17
The categories of this paper are: q-fin
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The categories of this paper are: hep-ex
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The categories of this paper are: hep-lat
14
The categories of this paper are: math-ph
32
The categories of this paper are: atom-ph