Experimental Study on RFID Antenna Reading Areas in a Tunnel System

Table 1

Compiled table of antenna 1 measurements.

Pole	Tag	Distance	RSSI	Pole	Tag	Distance	RSSI	Pole	Tag	Distance	RSSI
VS 135	529	−40,314	69,5					OS 138	542	−40,138	65,5
VS 130	541	−37,094	69	130	536	−35,18	67,5
VS 125	532	−31,495	67				0	OS 125	531	−30,794	71,5
				120	526	−25,437	68,5	OS 120	530	−25,279	80,5
VS 110	543	−17,822	83	110	532	−15,256	74,5	OS 110	542	−16,964	80
VS 100	541	−7,813	80,5	100	533	−5,942	78	OS 100	531	−5,176	89
VS 95	532	−4,854	106,5	90	536	5,38	107	OS 95	540	0	104,5
				80	526	14,649	117,5
VS 75	529	19,426	118,5				0	OS 75	531	19,231	111,5
VS 70	533	26,657	111,5	70	532	25,337	115
VS 61	530	32,988	113	60	533	34,431	100,5	OS 61	532	32,849	107,5
VS 57	529	36,584	111,5					OS 57	531	37,061	95
VS 50	533	44,606	94,5	50	536	45,62	100	OS 53	532	41,839	104
VS 35	530	58,361	99	40	526	54,287	83,5	OS 40	531	54,487	79
VS 30	529	62,773	95,5	30	532	64,344	94	OS 30	531	63,063	92,5
VS 20	530	74,084	85	20	533	74,187	97,5	OS 20	532	74,285	94,5
VS 15	529	82,725	77	10	536	84,431	86,5	OS 15	531	82,845	91
VS 0	530	93,395	98,5	0	526	93,852	90,5	OS 0	532	93,17	94,5
VS +5	530	100,268	93	+10	532	104,776	72,5	OS +5	532	99,874	74
				+20	533	114,695	72,5
VS +30	529	126,534	65	+30	536	124,376	73,5
VS +40	530	135,669	68	+40	526	136,067	67,5
VS +55	529	148,841	71,5	+50	532	146,694	67