SPECIFICATION
Part No.
Product Name
Feature
:
:
:
CA.25
2.4/5 GHz Dual-Band Wi-Fi Dielectric Loop Antenna
Smallest 2400MHz to 2500MHz/5150MHz to 5850MHz
Dual-Band SMT Type Antenna
Ultra Low profile 3.05mm x 1.6mm x 0.55mm
Supports IEEE 802.11 a/b/g/n and ac Dual-Band WIFI
systems
Linear Polarization
Tuned on 40*80mm ground plane
RoHS Compliant
SPE-15-8-005/B/WY
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1. Introduction
The CA.25 is a super small SMT ceramic loop antenna for 2400MHz to
2500MHz/ 5150MHz to 5850MHz dual band that includes Bluetooth, WIFI,
Zigbee, and ISM applications. The CA.25 has a peak gain of 1.0 dBi and 1.5
dBi at 2.4GHz and 5.5GHz, respectively, with an efficiency of at least 60%.
This antenna is delivered on tape and reel.
The CA.25 antenna has an ultra-low profile form factor of 3.05mm x 1.6mm x
0.55mm and allows use on extremely thin devices while still maintaining
excellent RF performance characteristics. All that is needed is a 50 Ohm
transmission line to the module.
Typical applications include:
USB dongles
Tablets
Home and industrial in-wall WIFI automation
Hand-held devices
Many module manufacturers specify peak gain limits for any antennas that are
to be connected to that module. Those peak gain limits are based on free-
space conditions. In practice, the peak gain of an antenna tested in free-space
can degrade by at least 1 or 2dBi when put inside a device. So ideally you
should go for a slightly higher peak gain antenna than mentioned on the
module specification to compensate for this effect, giving you better
performance.
Upon testing of any of our antennas with your device and a selection of
appropriate layout, integration technique, or cable, Taoglas can make sure any
SPE-15-8-005/B/WY
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of our antennas’ peak gain will be below the peak gain limits. Taoglas can then
issue a specification and/or report for the selected antenna in your device that
will clearly show it complying with the peak gain limits, so you can be assured
you are meeting regulatory requirements for that module.
For example, a module manufacturer may state that the antenna must have
less than 2dBi peak gain, but you don’t need to select an embedded antenna
that has a peak gain of less than 2dBi in free-space. This will give you a less
optimized solution. It is better to go for a slightly higher free-space peak gain
of 3dBi or more if available. Once that antenna gets integrated into your device,
performance will degrade below this 2dBi peak gain due to the effects of GND
plane, surrounding components, and device housing. If you want to be
absolutely sure, contact Taoglas and we will test. Choosing a Taoglas antenna
with a higher peak gain than what is specified by the module manufacturer
and enlisting our help will ensure you are getting the best performance
possible without exceeding the peak gain limits.
Custom tuned versions for different ground-planes and housing environments
can be made subject to a minimum order quantity.
Contact your regional Taoglas sales office for support to integrate and test this
antenna performance in your device.
CA.25 also has GPS/Glonass/Beidou functionality, if client follows our specific
matching circuit components on their main board, it can be re-tuned to work
as an embedded GNSS antenna. Please kindly refer to our specification
AGGBLA.03.07.0095A.
SPE-15-8-005/B/WY
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2. Specification Table
Parameter
Working Frequency
VSWR
Peak Gain
Efficiency(Peak)
Polarization
Impedance
Weight
Dimensions
Operating Temperature
3.0
0.5 dBi
60%
Linear
50 Ohm
9mg
3.05 x 1.6 x 0.55 mm
-40 to +85C
Specification
2400~2500 MHz
5150~5850 MHz
3.0
3.3 dBi
70%
* These values are based on our standard 40mmx80mm test board. Actual
electrical values will change depending on ground plane size, shape, mounting
position, matching circuit design, and surrounding environment.
SPE-15-8-005/B/WY
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3. Test Setup
Y
X
Z
SPE-15-8-005/B/WY
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