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0 I4 |% r( n. u5 }' W4 @6 v/ e这种产品就属于无源天线，FCC已经明确无源NFC天线无需认证，CE也如此。" Z' }9 I( s- H; H% e ~
Passive tags used with Frequency Hopping Tag Reading systems operating in Section 15.247.
& P/ I5 S$ N; h- P5 Y5 X9 m9 }5 `Frequently Asked Questions
% Q3 P6 f5 b7 CQ: Is a passive tag subject to Certification?
. t9 B1 e8 a9 ^4 t9 L- CA: No, a passive tag does not contain batteries and by itself is not authorized.
/ e: y. w- y+ O* i5 F2 NQ: Are passive tags tested for Certification?2 f, G) N1 {) X4 N+ P
A: No, only the tag reader needs to be tested. At this time, the current technology for passive
w0 {) S; d" m0 z2 e& Ttags is such that the emission levels from the passive tags are much lower than the allowed levels e9 N8 h* J0 @/ C( H+ u2 u
for the tag reader. However, even with the low emission levels, the fundamental passive tag
1 y5 V h" G# |# ~emission(s) may not operate within a restricted band just as the tag reader is prohibited from
2 K1 g$ X" g1 z$ r+ f, r! A0 poperating in a restricted band. The tag reader receiver should never include restricted band6 G' S* |0 m7 s% U3 ^6 A
frequencies. |
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