Antenna Configurations Tutorial

Antenna Configurations Tutorial in RFID API-3

The AntennaProperties in RFID API-3 is used to set the antenna configuration to individual antenna or all the antennas. The antenna configuration (SetAntennaConfig function) is comprised of Antenna ID, Transmit Power Index. These indexes are refers to the Transmit Power table, Tari Frequency Hop table, or Fixed Frequency table respectively.

IoT Connector allows to set the Transmit power and RF Modes to individual antenna or all antennas. we don’t support setting Tari separately.

Transmit Power(dBm)

To configure the antenna transmit power using Operating Mode the transmitPower field can be used. If the same transmit power is desired on all the antennas, the operating mode can be set as follows

IoT Connector Operating Mode to set the same transmit power on all antennas

 {
     "type": "CUSTOM",
     "transmitPower": 25
 }

To Configure different antenna power on each antenna, first the antennas to be used for reading tags must be specified using the antennas field and then the transmit power can be specified for each selected antenna.

IoT Connector Operating Mode to set different transmit power on each antenna of a 4 port reader

 {
     "type": "CUSTOM",
     "antennas": [1,2,3,4],
     "transmitPower": [20,22,25,30]
 }

The above operating mode specifies that antennas 1,2,3,4 of the 4 port reader is to be used for reading tags and the corresponding transmit powers are to be set to 20, 22, 35, 30 dbm respectively.

Important

The transmit power is matched with the corresponding antenna in the antennas array. The length of the array for antennas must be same as the length of the array in transmitPower.

RF Modes

To configure the RF Modes using Operating Mode the linkProfile field can be used. If the same RF Modes is desired on all the antennas, the operating mode can be set as follows

IoT Connector Operating Mode to set the same RF Mode on all antennas

 {
     "type": "CUSTOM",
     "linkProfile": 3
 }

To Configure different RF Mode on each antenna, first the antennas to be used for reading tags must be specified using the antennas field and then the linkProfile can be specified for each selected antenna.

IoT Connector Operating Mode to set different linkProfile on each antenna of a 4 port reader

 {
     "type": "CUSTOM",
     "antennas": [1,2,3,4],
     "linkProfile": [3,101,913,1519]
 }

The above operating mode specifies that antennas 1,2,3,4 of the 4 port reader is to be used for reading tags and the corresponding RF Modes are to be set to 3, 101, 913, 1519 respectively.

Important

The RF Mode is matched with the corresponding antenna in the antennas array. The length of the array for antennas must be same as the length of the array in linkProfile.