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Should I expect 28 dBi gain if I design properly 2x2 microstrip patch antenna array in which an element has 7 dBi gain? Or expectations should be 10-11 dBi?

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  • \$\begingroup\$ where do you take the 28 dBi from? \$\endgroup\$ May 12, 2020 at 22:06
  • \$\begingroup\$ 28 dBi is not how combining logs works. Maybe 10-12 - just maybe more with properly designed array. \$\endgroup\$
    – Russell McMahon
    May 13, 2020 at 4:17

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Given you have 4 identical antennas, your array will gather 4x the energy (at best), so expect 3 + 3 dB more output power.

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