R

radiation

containing, 217–219

exposure to, 246–247

radio frequency interference, 132

Radiocommunication sector, 234

radiocommunications policies, 237

random number generation, 91

read-only tags, 85

read ranges in interrogators, 26

read rates in EPC classes, 91

read/write capability in interrogators, 26

reader-talks-first (RTF) signals, 79

readers

dense reader mode, 40–41

dumb vs. smart, 28

GUIs, 27–28

optimizing, 185–186, 203

overview, 121–123, 122

pinging, 208

ports, 206

powering up, 187

settings, 213–214

terminators for, 186

testing, 177–179, 177

real-time interrogation, 28

real-time location systems (RTLS), 79–80, 159–161, 160

real-time spectrum analyzers (RTSAs), 125

receive sensitivity testing in UHF systems, 126

received signal strength indication (RSSI), 161

receivers in interrogators, 25

reflections of waves, 6

regions

frequency assignment in, 235

standards and regulations in, 236–241

tag frequencies in, 88–90

transmission restrictions in, 29–30

regulated interrogators, 29

reserved memory, 91

resonant frequencies, 4

retail applications, 81

RF modules in interrogators, 25

RF path loss, 65–69, 67–69

RF receivers in interrogators, 25

RF test setup, 60–62, 61

RF transmitters in interrogators, 25

RFid Gazette website, 268

RFID Journal Online, 267

RFID Switchboard website, 268–269

RFID Update website, 269

right-hand circular polarized antennas, 35

right-hand rule, 4

roving captures, 63

RSSI (received signal strength indication), 161

RTF (reader-talks-first) signals, 79

RTLS (real-time location systems), 79–80, 159–161, 160

RTSAs (real-time spectrum analyzers), 125