Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 636-637 |
| Number of pages | 2 |
| Journal | Electronics Letters |
| Volume | 45 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - 2009 |
| MoE publication type | A1 Journal article-refereed |
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Wideband adaptive isolator for UHF RFID reader. / Pursula, Pekka; Marttila, Ilkka; Nummila, Kaj.
In: Electronics Letters, Vol. 45, No. 12, 2009, p. 636-637.Research output: Contribution to journal › Article › Scientific › peer-review
TY - JOUR
T1 - Wideband adaptive isolator for UHF RFID reader
AU - Pursula, Pekka
AU - Marttila, Ilkka
AU - Nummila, Kaj
PY - 2009
Y1 - 2009
N2 - A wideband adaptive isolator for a UHF RFID reader with a minimum component count is introduced. The operation of the device is based on a reflection from a variable load, which is connected to a port of a hybrid coupler. The other ports are connected to the receiver (RX), transmitter (TX) and antenna ports of the reader. The isolator provides an isolation of 50 dB from TX to RX at the 800 MHz-1 GHz band, covering the worldwide UHF RFID bands. The adaptive system ensures high isolation up to an antenna return loss of 6 dB, or reflection coefficient of 0.5. The measured loss in the TX-to-antenna and antenna-to-RX paths is 4 dB.
AB - A wideband adaptive isolator for a UHF RFID reader with a minimum component count is introduced. The operation of the device is based on a reflection from a variable load, which is connected to a port of a hybrid coupler. The other ports are connected to the receiver (RX), transmitter (TX) and antenna ports of the reader. The isolator provides an isolation of 50 dB from TX to RX at the 800 MHz-1 GHz band, covering the worldwide UHF RFID bands. The adaptive system ensures high isolation up to an antenna return loss of 6 dB, or reflection coefficient of 0.5. The measured loss in the TX-to-antenna and antenna-to-RX paths is 4 dB.
U2 - 10.1049/el.2009.0512
DO - 10.1049/el.2009.0512
M3 - Article
VL - 45
SP - 636
EP - 637
JO - Electronics Letters
JF - Electronics Letters
SN - 0013-5194
IS - 12
ER -