Category: RF/IF and RFID

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What are the important properties of circularly polarized waves?

* Question What are the important properties of circularly polarized waves? * Answer Circularly polarized waves have the following important [...]

What is the title of IS0/IEC l4443 international standard?

* Question What is the title of IS0/IEC l4443 international standard? * Answer Identification Card - Non-Contact IC Card Proximity Card This [...]

What are the advantages of the MC68HC05SC series chip smart card?

* Question What are the advantages of the MC68HC05SC series chip smart card? * Answer (1) Improve data security. (2) Application flexibilit [...]

What are the ALOHA algorithms?

* Question What are the ALOHA algorithms? * Answer 1 pure ALOHA algorithm 2 slot ALOHA algorithm 3 frame slot ALOHA algorithm 4 dynami [...]

What constitutes the structure of a short frame?

* Question What constitutes the structure of a short frame? * Answer The start bit S, 7 data bits bl b7 and the communication end bit E cons [...]

What are the characteristics of low frequency and high frequency RFID antennas?

* Question What are the characteristics of low frequency and high frequency RFID antennas? * Answer (1) The antennas are in the form of coil [...]

What is the basic principle of face recognition technology?

* Question What is the basic principle of face recognition technology? * Answer Analyze the position of each face, J, and the position infor [...]

What is the principle of parameter testing for COS functional testing?

* Question What is the principle of parameter testing for COS functional testing? * Answer When the fixed command parameters P1, P2, Lc and [...]

In the RFID positioning, what are the two main methods?

* Question In the RFID positioning, what are the two main methods? * Answer In RFID positioning, it is mainly divided into two categories: t [...]

What are the main standards for microwave RFID?

* Question What are the main standards for microwave RFID? * Answer IS0 10374, IS0 18000-4 (2.45 GHz), IS0 18000-5 (5.8 GHz), ANSI NCITS 256 [...]
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