207 9 733 2 2794 document 733 28-July-2014 tag outdoor testing-raw data.xlsx application/vnd.openxmlformats-officedocument.spreadsheetml.sheet 836b2d16fb384145e397cbe767807c43 MD5 19717 2017-09-07 14:06:43 https://data.kent.ac.uk/207/1/28-July-2014%20tag%20outdoor%20testing-raw%20data.xlsx 207 1 1 application/vnd.openxmlformats-officedocument.spreadsheetml.sheet application/vnd.ms-excel Raw data for Cycade tree mounting RFID tag mounting out door measurements en public cc_by_4

28-July-2014 tag outdoor testing-raw data.xlsx

data archive 1 disk0/00/00/02/07 2026-01-27 16:38:53 2026-01-28 11:36:21 2026-01-27 16:38:53 data_collection show Batchelor John C. j.c.batchelor@kent.ac.uk 0000-0002-5139-5765 TK7871.67.M53 41000 public This dataset was moved to KDR from KAR. The original location of this item was https://kar.kent.ac.uk/50628. Measurements taken between 28-30 July 2014. UHF tag on thin mylar backing measured firstly on an adjustable height stand at heights of 1.4m and 1.9m. Objective to assess and compensate for read range variation caused by ground/tag distance. Tag read performance measured for read powers of 33dBm, 30dBm, 26dBm, 20dBm, and 10dBm using Favit UHF RFID 7dBic patch antenna provided with the system. Measurements taken in open area with dry ground. Tag then attached to mature Oak tree at 1m, then 2m above ground and successful read over 5m between reader antenna established at 1.5m and 0.5m heights. Tag then mounted 4m high on tree and read antenna placed inside office window 5m from tag. Reader was allowed to repeatedly interrogate tag at maximum speed for 5 minute intervals and total successful read count recorded. Reader power as varied from 33dBm, 30dBm, 29dBm, 28dBm, 27.5dBm, 27dBm, to establish that reliable reading over 5m is lost for a reader power of less than 27.5dBm. It was noted that a certain aperture effect seemed to occur due to the presence of the window frame and this reduced the read range slightly. The read range was mounted as far forward in the window as possible to mitigate against this effect. The read range data in the provided file has been compared with the open space Friis power relationship of received power being proportional to transmit power divided by transmission distance squared. 2021-07-28 dataset csv plotted data pub 2015-09-28 published 2026-01-27 2015-09-28 2021-02-16 12300/1 Broadband & Wireless Communications 2022-04-14 13200 0 Kent Business School 2025-06-03 14100 Kent Business School English 2014-07-28 2014-07-30