UTC has a set of RFID system development antenna
designs for high frequency 13.56Mhz RFID & AIDC applications. They come in different
shapes, sizes and architectures; to allow a variety of read ranges and
to take full benefit of the different output power settings of
readers/couplers currently available in the market.
Select models of the antenna line come packaged in
enclosures strong enough to withstand harsh industrial environments. The
durable package allows easy integration with devices used in either
portable or fixed position installations. Antenna elements are also
available without packaging for use in OEM projects. Use of ferrite in
some antenna baluns enables efficient isolation from metallic
UTC antennas meet standard technical
requirements necessary for any RFID project and are easy to implement
with a wide range of readers/couplers.
Custom Design Inquiries Welcome.
High Frequency 13.56MHz
Industrial Antenna -
In general, the distance at which a transponder
inlay (tag) can be read is related to the size of the reader’s antenna
system and its associated magnetic field strength. The larger the
antenna, the greater the range. Industrial applications frequently
require extended range reading of tags.
The UTC Industrial RFID Development antennas are
engineered for the rugged industrial manufacturing and warehousing
environment. Constructed primarily of copper tube, the selected
geometries maximize the development of the read field. The matching
baluns complete the design with configuration tuning capability to
ensure reliable and accurate operation in the installation environment.
High Frequency 13.56 MHz Mid-Range/Vicinity Antenna -
The Vicinity antenna designs from UTC may be either
the Panel designs described above in a smaller form factor, or they may
be a printed circuit board (PCB) design. Most of these designs are
intended to incorporate a small surface mounted, capacitance matching
balun design. Packaging designs may vary widely from countertop mats to
plastic case enclosures depending on the application.
The widely accepted standards for HF systems operate
in the High Frequency band at 13.56 MHz and antennas utilize the
magnetic (H) field to transfer power to the battery-less tag during
reading, writing or locking operations. The reader expects an antenna to
be tuned to a centre frequency of 13.56MHz, have 50Ω impedance and when
connected to a reader have a (loaded) Q factor of 30. For optimum
performance, the reader matching should have a VSWR ratio of less than
1:1.2. Feeder coax cables can be up to 8 m in length.
A single antenna 50cm x 50cm has a reading range
of about 50cm at 800 - 1000mW or a pair of similar antennas (connected to the
same reader) can cover distances greater than 1m. With larger antennas
and greater power outputs, longer reading distances can be achieved. The
writing distance is approximately 65 - 70% of the reading range. Integrators
are advised that they should build a margin of safety into their designs
when specifying maximum read performance
UTC presents a series of antennas designed for
commercial indoor installations. These designs are ideal for installations in
retail, corporate, or institutional applications. The panel design is
attractive and lightweight. Panels may be mounted in several
orientations such as wall posters or signs, countertop covers, pedestal
displays, door panels and floor mats.
Antenna inlays may be incorporated in a variety of
shapes and materials for custom appearance in any application.
Design requirements are expected to be for “Long
Range” and “Mid Range” read applications. These Vicinity applications
are typical of the ISO15693 requirements for both read and write
capability. Designs are also available for Microchip 13.56MHz RFID
Proximity and Short Range
applications generally presume a “near contact” orientation of the tag
to the antenna for reliable read and write. As with the other PCB
designs, there are a variety of sizes available and custom designs and
packaging can be readily produced. Designs incorporate a small surface
mounted, capacitance matching balun.
UTC has several balun designs available to match
the requirements of the antenna configuration and environmental
The Balun converts an unbalanced load to a balanced
load and is primarily used to remove common mode noise problems
associated with multiple antennas with different ground potentials.
It is also used to connect balanced antennas to unbalanced coax. These
differences may set up common mode currents that can disturb receive