Effects of inter-element spacing and number of elements on planar array antenna characteristics
Planar array antenna is seen as one of the innovative solutions of massive MIMO and 5G networks since they provide directive beams. In this paper, planar array antenna with square and rectangular arrangements based on 2 x 2 antenna elements as one subarray was proposed. Then, array factor for the...
| Summary: | Planar array antenna is seen as one of the innovative solutions of massive
MIMO and 5G networks since they provide directive beams. In this paper,
planar array antenna with square and rectangular arrangements based on 2 x
2 antenna elements as one subarray was proposed. Then, array factor for the
the planar array antenna with up to 64 antenna elements was calculated to
analyze the effects of inter-element spacing and number of elements on the
antenna characteristics. Higher values of inter-element spacing contributed to
higher number of side lobes, narrower main lobe, higher directivity and
lower half power beamwidth (HPBW). Inter-element spacing equals to 0.5λ
was found to be the most suitable value for planar array antenna design based
on the analysis. Meanwhile, higher number of antenna elements increased the
value of directivity of the planar array with narrower HPBW. Therefore,
there is a tradeoff between directivity and HPBW in designing planar array
antenna for massive MIMO application. |
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