There is a very good article on your query. Please read this paper and I am sure you get the answer to this question.
Article 5G Millimeter-Wave Antenna Array: Design and Challenges
This is a good area to carry out research.The pros and cons of this system of Mwave array antenna depend majorly on the design parameters such as array factor and so on.
You can get recent literature on this subject by visit ieee (Mwave antenna,propagation and so on for further info)website or any relevant site.
Hope this helps.
Feel free to contact me if need be.
Best regards,
L
putting many mmwave antennas in one PCB will result in the following differences between the mmwave and the microwave antennas used now:
Smaller wavelength means smaller captured energy at antenna
3GHz->30GHz gives 20dB extra path loss due to aperture
Larger bandwidth means higher noise power and lower SNR
50MHz -> 500MHz bandwidth gives 10dB extra noise power.
hope this answer will help you
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