Manufacturing RFID Antenna

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Transcript Manufacturing RFID Antenna

Cellular, Bluetooth/Wi-Fi, RFID
Frequency Range
Cellular phone systems
– 824-894 MHz. (older system- no long in use)
– 1850-1990 MHz. (Most common –PCS band0
Bluetooth and Wi-Fi
– 2400-2497 MHz. Unlicensed Band - ULB)
– 850-980 MHz (Other frequencies also used)
Cellular Phone System
Cell phones operate in “cells” which is a small
geographic area
Calls are switched from cell to cell as needed.
Each cell varies in size based on demand
A cell can be looked at as a geographic
coverage area with a base station (tower)
which transmits signals to, and receive signals
from, the mobile phones in its cell.
Calls are routed to a central switching station
and then forwarded to complete your call via
other cell towers, land lines, microwave links,
fiber optic lines, satellite links, etc.
The name Bluetooth comes from
a Danish king that united various
kingdoms. Erickson initially used
the term
Bluetooth allows devices such as
cellular phones, computers,
computer input and output
devices, digital cameras,
earpiece devices, and video
game consoles to communicate
with one another wirelessly.
Bluetooth has a typical range of
1-10 meters and operates at low
power (1-10 milliwatts)
Wireless-Fidelity or Wi-Fi
Wi-Fi ranges to about 100 meters.
Wi-Fi can operate at 2.4GHz and 5.0 GHZ
– The most common is a 2.4 GHz
Wi-Fi specifications are set by the IEEE
Wi-Fi is primarily used to provide internet access from your
computer without a hard wire connection.
“Hotspots” refer to an area with Wi-Fi access
– Hotels, airport lobbies, restaurants, coffee shops are common places to
find W-Fi available
Wi-Fi can reach data transferable rates of
– 54 Mbps (802.11a and 802.11g)
– 11 Mbps (802.11b)
WiMAX (new) range to 2 miles – cover a city with internet
Radio-frequency identification (RFID)
automatically identifies
Relies on storing and retrieving data using
devices called transponders.
Radio-frequency identification is passive,
active, or semi-passive.
Passive RFID tags use the incoming signal
for power to respond
An RFID system consists of antenna, a
transceiver, and a transponder.
RFID tag before
RFID tag after
An RFID tag implanted under the skin