1

I have read an article. (ISO 15693-2 Page 1)

Somewhere in it, it mentioned that : enter image description here

Now, I can't translate it.

What does this sentence mean?

  1. Subcarrier is a signal that its frequency is equal to Fs, And this signal is used to modulate another signal that we call it carrier and has a frequency equal to Fc? Is this right?

Update: And also what does this below sentence mean?

vicinity integrated circuit card

It is a card that has integrated circuit and is vicinity? or It is integrated circuit of a vicinity card?

3
  • Yes, you are right. Dec 30, 2014 at 10:51
  • 1
    I read Fs, Fc as labels, not values.
    – Kreiri
    Dec 30, 2014 at 11:13
  • @DamkerngT. Would you please take a look at the Update section too? Dec 30, 2014 at 11:24

1 Answer 1

1

Subcarrier is a signal that its frequency is equal to Fs, And this signal is used to modulate another signal that we call it carrier and has a frequency equal to Fc? Is this right?

Yes. That is correct.

vicinity integrated circuit card
It is a card that has integrated circuit and is vicinity? or It is integrated circuit of a vicinity card?

In vicinity integrated circuit card, "vicinity" modifies "integrated circuit card" (or "IC card", or just "card"). Vicinity card is used in contrast to proximity card. A proximity card normally has a range of 5-10 cm. IEC 15693 is a standard for such vicinity cards.


These following pictures should make it clear why the cards are called IC cards:

A passive proximity card for door access.

A passive proximity card with the plastic casing opened to show components: antenna coil and integrated circuit *(black object bottom center)*
(Source: http://en.wikipedia.org/wiki/Proximity_card)

The lower picture shows the inside of an integrated circuit card. Two main components are clearly shown: antenna coil and integrated circuit (black object bottom center).

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