ben8118
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Dear all,
I'm designing a wireless system using 315Mhz frequency.
The antenna of the system need to be inside the casing. The system is power by 2 x AAA battery (3.3v).
I use 12v step up regulator to increase the 315mHz module strength. If using 3.3v, the signal strength is between -48dbm to -45dbm.
If using 12v, the signal strength is up to -40dbm to -38dbm.
My problem is i need to achieve at lease -25dbm, because I need to achieve 3 floor distance.
Please give advice. Thanks.
I'm designing a wireless system using 315Mhz frequency.
The antenna of the system need to be inside the casing. The system is power by 2 x AAA battery (3.3v).
I use 12v step up regulator to increase the 315mHz module strength. If using 3.3v, the signal strength is between -48dbm to -45dbm.
If using 12v, the signal strength is up to -40dbm to -38dbm.
My problem is i need to achieve at lease -25dbm, because I need to achieve 3 floor distance.
Please give advice. Thanks.