Dear Sir/Mam/Colleague,
I am interested in designing a circuit for FPV wireless camera system without the use of WiFi range of 2.4 GHz. Kindly suggest me the possibilities. And the use of the range within the legal limitations. I am interested in minimum attenuation due to surroundings with the use of a very compact antenna.
Thanks and regards
Dear Sandip,
First of all you have to use the ISM band which is distributed on a number of subbands. Please for the details of these subbands please see the attached link:https://www.ofcom.org.uk/__data/assets/pdf_file/0022/103297/fat-ism-frequencies.pdf
According to your requirement of minimum attenuation of the environment, you have to use as small frequency as possible,
According to your second requirement of compact antenna you have to use as high frequency as possible because the size of the antenna is in the order of half wavelength. The subband must be wide enough to satisfy the wide band communication required for video transmission.
So, accordingly i would propose you to use the UHF range around the 430 MHz.
You can find a very powerful one chip configurable wireless transceivers form many semicondcutor companies like TEXAS instrument and ST micrelectronics and other famous companies.
These are some guide lines that may help you to realize your wireless link.
Best wishes
You said "very compact antenna"
So, what are the maximum dimensions of antenna you can use. Because, dimensions depends on frequency.
Also, what is the maximum distance coverage?
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