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Document Number: 45157
For technical questions, contact: mlcc@vishay.com
www.vishay.com
Revision: 15-Jun-10
1
VJ 6040 UHF Chip Antenna for Mobile Devices
VJ 6040
Vishay Vitramon
The companys products are covered by one or more of the
following:
WO2008250262 (A1), US2008303720 (A1),
US2008305750 (A1), WO2008154173 (A1).
Other patents pending.
DESCRIPTION
The VJ 6040 multi-layer ceramic chip antenna is a small
form-factor, high-performance, chip-antenna designed for
TV reception in mobile devices in the UHF band. It allows
mobile TV device manufacturers to design high quality
products that do not bear the penalty of a large external
antenna.    Utilizing    Vishay's    unique    materials    and
manufacturing technologies, this product complies with the
MBRAI standard while maintaining a small outline.
Focusing on consumer applications, the antenna is designed
to be assembled onto a PC board in the standard reflow
process.
Target customers of the VJ 6040 are mobile phone makers,
portable multimedia device makers, notebook OEMs and
ODMs, and accessory card OEMs and ODMs.
The VJ 6040 is the first of a family of products developed by
Vishay, a world leader in manufacturing of discrete and
passive components.
FEATURES
"  Small outline (10.5 mm x 15.5 mm x 1.2 mm)
"  Omni-directional, linear polarization
"  Complies with MBRAI standard
"  Complete UHF band coverage (470 MHz to 860 MHz) up
to 1.1 GHz
"  Requires a tuning circuit and ground plane for optimal
performance
"  Standard SMT assembly
"  50 ?unbalanced interface
"  Operating temperature range (- 40 癈 to + 85 癈)
"  Reference design and evaluation boards available upon
request
"  Compliant to RoHS directive 2002/95/EC
APPLICATIONS
"  Mobile UHF TV   receivers including DVB-T, DVB-H,
ISDB-T, CMMB, ATSC, and MediaFLO devices
ANTENNA PERFORMANCE
Peak gain
The antenna radiation characteristics are influenced by
several factors including ground plane dimensions and
impedance matching network.
The   antenna   parameters   presented   hereafter   were
measured according to the configuration suggested by the
VJ 6040 evaluation board, utilizing its four channel active
digital tuning circuit. The evaluation board ground plane is
40 mm by 80 mm large.
Figure 1 shows peak gain over frequency throughout the
UHF band, compared with the MBRAI requirements.
Fig. 1 - Peak gain vs. Frequency
- 12
- 10
- 8
- 6
- 4
- 2
0
450   500   550 600 650 700  750   800   850  900
Frequency (MHz)
Standard
Measured
Simulated
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