Hanoi-Vietnam: General unwanted emission limits for Evolved Universal Terrestrial Radio Access (E-UTRA FDD) Repeater

20:42, 10/07/2024

Circular 25/2017/TT-BTTTT has been issued by the Vietnam Ministry of Information and Communications on the National technical regulation on Evolved Universal Terrestrial Radio Access (E-UTRA FDD) Repeater.

Depending on the specific bandwidth, there will be different unwanted emission limits, typically for the bandwidth equal to or greater than 5 MHz for E-UTRA FDD:

Frequency offset at -3 dB point of measurement filter, ∆f	Frequency offset at center frequency of measurement filter, f_offset	Limit	Measurement bandwidth
0 MHz ≤ ∆f < 0.2 MHz	0.015 MHz ≤ f_offset < 0.215 MHz	-12.5 dBm	30 kHz
0.2 MHz ≤ ∆f < 1 MHz	0.215 MHz ≤ f_offset < 1.015 MHz	-12.5 dBm - 15 x	30 kHz
	1.015 MHz ≤ f_offset < 1.5 MHz	-24.5 dBm	30 kHz
1 MHz ≤ ∆f < 10 MHz	1.5 MHz ≤ f_offset < 10.5 MHz	-11.5 dBm	1 MHz
10 MHz ≤ ∆f < ∆f_max	10.5 MHz ≤ f_offset < f_offset_max	-15 dBm	1 MHz

Circular 25/2017/TT-BTTTT takes effect from July 1, 2018.

- Thanh Lam -

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