Antenna Tuning
Solutions for Smartphone and Tablets
November 2013
Antenna Tuning Solutions
for Smartphones & Tablets
Key Assets of Antenna Tuning
Increased number of bands in Smartphones call for band
specific optimized antenna matching
Improves TIS (=Total Isotropic Sensitivity)
Rx insensitivity to VSWR
Improves TRP (=Total Radiated Power)
Tx insensitivity to VSWR
Higher Flexibility in Antenna Form Factors
Less system current consumption (PA)
through optimized matching
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Antenna
Feed Point
Principles of Antenna Aperture Tuning
Smartphones & Tablets
Antenna
Aperture Tuning
PA Purpose
Optimizes
•Antenna Radiation Efficiency
•Antenna Radiation Pattern
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Example
Antenna Aperture Tuning
Smartphone & Tablets
Z Z Z Z
Typical PIFA antennas
Application examples are not limited to below configurations
Antenna Feedpoint
Antenna Feedpoint
Tuning Element
Tuning Element
Example 1 Example 2
Antenna Feedpoint
Tuning Element
Example 3
High Power + High voltage RF Switches
Page 4 June 2014 Copyright © Infineon Technologies AG 2014. All rights reserved.
Antenna Aperture Tuning Switches
RF CMOS Technology
SPDT
BGSA12GN10
SP3T
BGSA13GN10
SP4T
BGSA14GN10
Ron [Ω]
1.6
RF1 0.8
RF2 1.3
RF3 1.6
1.6
Coff [fF]
120 fF
RF1 240 fF
RF2 145 fF
RF3 120 fF
120 fF
Effective Ron x Coff
<200fs
<200fs
<200fs
H2 @ Pout=25dBm
-105dBc
-105dBc
-105dBc
H3 @ Pout=25dBm
-115dBc
-115dBc
-115dBc
Packaging Plastic
1.5 x 1.1mm²
Target data Target data Target data
GPIO GPIO GPIO
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Highest Flexibility - ONE SIZE FITS ALL
Same Footprint & Pinout
GPIO Controlled Antenna Tuning Switches
RF3
RF4
RF 1
RF 2
RFC
GND GND
CTRL2
CTRL1 VBAT
NC
RF4
NC
RF 2
RFC
GND GND
CTRL2
NC VBAT
NC
RF4
RF 1
RF 2
RFC
GND GND
CTRL2
CTRL1 VBAT
SPDT
BGSA12GN10
SP3T
BGSA13GN10
SP4T
BGSA14GN10
Full Compatibility
Bottom View Bottom View Bottom View
TSNP10-1
1.5 x 1.1mm²
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Quality Level
Drop tests
Final electrical test
High volume CMOS
In Plastic Package
TSNP10-1
1.5 x 1.1mm²
Superior Quality and Economy of Scale
with RF CMOS in Plastic Package
Page 7 June 2014 Copyright © Infineon Technologies AG 2014. All rights reserved.
