On Fri, 2 Oct 2020 21:34:17 +,
MARIO DE ARANZETA wrote:
> I've read information on several websites about extremely low power devices
> for Japan. The fundamental limit being 500uV/m@3m for frequencies below 322
> MHz. Does anyone know if this is a Q-P or Average.Also what is the limit for
> harmonics?
It is slightly complex.
For example in 30 MHz to 1 GHz range, measure the emission with QP, PK with RBW
= 100 kHz,
and PK with RBW = 1 MHz, and
o PK(1MHz) - PK(100kHz) <= 3 dB --- use QP value
o 3 dB < PK(1MHz) - PK(100kHz) <= 7 dB --- use PK(1 MHz) value
o 7 dB < PK(1MHz) - PK(100kHz) --- use PK(1MHz) value + 5 dB
No special limit for harmonics, and same limit (500 uV/m for f < 322 MHz,
35 uV/m for 322 MHz <= f <= 10 MHz, ...) can apply.
Regards,
Tom
--
Tomonori Sato
URL: http://t-sato.in.coocan.jp
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