Ethertronics’ Prestta series of Isolated Magnetic Di-
pole™ (IMD) stamped metal antennas address the
challenges facing today’s product designers. IMD’s
high performance and isolation characteristics offer
better connectivity and minimal interference.
IMD antennas can be used in a variety of devices:
• Notebook Computers
• Access Points
• Industrial Handhelds
• Mobile Phones
PRODUCT: WLAN
PresttaTM WLAN
Embedded Antenna
2.4/4.9/5.2/5.8 GHz (802.11 a/b/g/n + Japan)
TECHNOLOGY ADVANTAGES
Part No. 1000146
The patented IMD technology can be utilized in a
variety of form factors, ranging from single to quad-
band stamped metal antennas to compact, yet high
performance ceramics. IMD antennas requires a
smaller design keep-out area, carry lower program
development risk which yields a quicker time-to-
market, without sacrificing RF performance.
Stays in Tune
IMD antenna technology
provides superior RF field
containment, resulting in
less interaction with
surrounding components.
Ethertronics IMD antennas
resist de-tuning;
providing a robust radio
link regardless of the
usage position.
ETHERTRONICS
9605 Scranton Road, Suite 300 | San Diego, CA 92121 - USA | www.ethertronics.com
tel +(1) 858.550.3820 | fax +(1) 858.550.3821 | contact: info@ethertronics.com
KEY BENEFITS
SERVICE AND SUPPORT
Extensive RF Experience
• Our design teams are composed of RF PhDs, project
managers and a complete engineering team to support
every project — from initial prototyping to TIS and
TRP performance testing.
Global Operations & Design Support
• Ethertronics’ global operations supports an integrated
network of design centers that can take projects from
concept to production.
END USER ADVANTAGES
Unique Form Factors Support Advanced
Industrial Designs
• Smaller, more efficient IMD embedded antennas
break through restrictive design rules and provide new
freedom in component placement.
Superior Range & Signal Strength
• Better antenna function means longer range and
greater sensitivity to critically precise signals—
delivering greater customer satisfaction while building
brand loyalty.
Faster Acquistion Times and Data Rates
• Improved performance provides faster data rates for
downloading e-mail or surfing the internet and
watching mobile video. Improved performance also
means faster signal acquisition times so users can
utilize GPS applications more quickly and reliably.
DESIGN ADVANTAGES
Quicker Time-to-Market
• By optimizing antenna size, performance and
emissions, customer and regulatory specifications are
more easily met.
Greater Flexibility
• Ethertronics’ first-in-class IMD technology enables you
to develop concept designs that are more advanced
and that deliver superior performance in reception-
critical GPS/WiFi applications.
RoHS Compliant
• Ethertronics’ antennas are fully compliant with the
European RoHS Directive 2002/95/EC.
PRODUCT: WLAN a/b/g/n + Japan
Electrical Specifications
Typical Characteristics
WLAN a/b/g/n + Japan
Antenna (GHz) 2.390-2.490 4.900-5.100 5.150-5.350 5.70-5.900
Peak Gain 3 dBi 4 dBi 4 dBi 4 dBi
Efficiency 65% 60% 55 % 45 %
VSWR Match <2.1 : 1 <2.1 : 1 <2.1 : 1 <2.1 : 1
Front to Back Ratio -2 dB -10 dB -10 dB -10 dB
Feed Point Impedance 50 Ω unbalanced (other if required)
Dimensions 17.9 mm x 6.9 mm x 4.3 mm
Weight / Packaging 0.3 g
Cable / Connector Optional — Hirose Electric Co, U.FL-LP-088 or equivalent
Cable Length Surface Mount standard configuration, 450mm cable length optional
Mechanical Specifications
Antenna Radiation Patterns
x
y
Typical Performance
Main-pol
Cross-pol
E-plane (zx)
H-plane (zy)
z
x
z
z
z
y
2.390-2.490 GHz Band 4.900-5.900 GHz Band
-30 dB
-20 dB
-10 dB
0 dB
-30 dB
-20 dB
-10 dB
0 dB
-30 d B
-20 d B
-10 d B
0 dB
-30 d B
-20 d B
-10 d B
0 dB
VSWR Efficiencies
Antenna PCB
Ground/Feed Layout
Notes:
1. PCB size is a representative sample and able
to be modified to specific requirements.
2. No Ground Zone: The shaded area is to be
free of any ground plane on all layers.
3. All dimensions are in mm.
WL AN a
40%
50%
60%
70%
4900 5100 5300 5500 5700 5900
Freq uency (MH z)
WLAN b & g
55%
60%
65%
70%
75%
2380 2410 2440 2470 2500
Fr eque nc y (M H z)
Typical WLAN VSWR
1.0
2.0
3.0
4.0
5.0
2000 3000 4000 5000 6000
Frequency (MH z)
x
y
z
© 2007 Ethertronics. All rights reserved. Ethertronics, the Ethertronics logo, shaping antenna technology, Prestta, Savvi, Isolated Magnetic Dipole
and the iMD logo are trademarks of Ethertronics. All other trademarks are the property of their respective owners.
Specifications subject to change and are dependent upon actual implementation. WL-10-31-07
Ethertronics’ Internal (Embedded) Antenna Specifications.
Ethertronics produces a wide variety of standard and custom ante nnas to meet user needs.
Below are the typical specs for a WLAN application.
