ALA.01.07.0095A Datasheet by Taoglas Limited

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A“ TAOGLAS@
SPE-12-8-036/B/WY Page 1 of 15
SPECIFICATION
Part No. : ALA.01.07.0095A
Product Name : 1575MHz GPS-GALILEO Ceramic Active Loop
Module
Features : 16dB One Stage
GPS/GALILEO
PCB Dims: 45*10*2.3mmmm
RoHS Compliant
A“ TAOGLASE
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1. Introduction
The active loop antenna ALA.01 is best suited for applications where omni-directionality is
important. The average gain is similar to an 18mm active patch antenna but in a much
narrower profile, only 2.3mm at its highest point, allowing this antenna to be used
perpendicular to the device main-board, or placed adjacent to the top or bottom of device
main board. A one stage LNA combined with a SAW filter boosts the S/N (C/N) of the
GPS/GALILEO system and helps to overcome some noise effects from today’s crowded
device boards that passive antennas cannot resolve.
The antenna can be placed in a plastic slot in the device housing. Alternatively, adhesive
foam, hot-melt, or non-conductive screws could be used to mount the antenna. The core
antenna design principle of loop current flow tends to “lock-out” a lot of surface noise
from close circuitry from entering the antenna.
A“ TAOGLAS®
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2. Specification
ELECTRICAL
Frequency
1575.42 ± 1.023MHz
Bandwidth (10dB return loss)
70MHz typical
Peak Gain
Typ. 3.1dBi
Avg. Gain
-2.2dBI
Polarization
Linear
VSWR
2 max (depends on the special environment)
Dimension
5*3*0.5mm
Gain (with LNA)
16 ± 4dB @ 90o
Output Impedance
50Ω
Polarization
Linear
Input Voltage
Min. 2.6V, Typ. 3.0V, Max. 5.0V
LNA
Frequency
1575.42 ± 1.023MHz
Gain
Typ. 16dB @ 3V
Typ. 17.8dB @ 5V
Noise Figure
Typ. 1.3dB @ 3V
Filter (out of band attenuation)
Saw Filter (fo=1575.42MHz)
40dB typ. fo±50MHz
45dB min. fo±100Mhz
Output VSWR
< 2.0
Input Voltage
DC = 2.6~5.0V
Current
DC = 13mA at 3.0V
A“ TAOGLAS®
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RF Cable
955mm 1.13 Coaxial Cable
Connector
IPEX MHF(U.FL)
Dimensions
45*10*2.3mm
Weight
1.35±0.5g (typical)
Operation Temperature
-40°C to + 85°C
Storage Temperature
-40°C to + 90°C
Humidity
10 to 95%
Antenna {Linear} Gain = -2.2 dBi typical $21 = LNAGain = 16113 typical TAOGLASE AC Input , Output DC AC DC SAW Matching TWS'W Matching ‘ p ‘ Filter Network ' Network 3V SYS The structure of GPS antenna module 13mA fo=1575.42MHz
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3. Performance Measurement
3.1. Block Diagram
A“ TAOGLAS®
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4. Measurement Method
4.1. Chip
a) Reflection Co-efficient Measurement
a. Equipment: Network Analyzer (Aglient E5071A)(Fig.1)
b. Item S11 Log Chart(Return Loss) S11 Smith Chart (impedance)
Figure 1. Network Analyzer
a) Pattern Measurement
a. Equipment: Anechoic Chamber (Fig. 2), Network Analyzer
(Aglient E8753ES)
b. Item: Gain Pattern, Axial ratio
Figure 2. Quiet Room
A, TAOGLASE 4 Rotation \,o° DUT D / Standard hom . DUT: device under testing 90
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Figure 3. Schematic of measurement set-up
TAOGLASE Fig. 5 Noise Meter Fig.6 Shielding Room
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4.2. LNA
a) Parameter Measurement
a. Equipment: Network Analyzer (Aglient E5071B)(Fig.4)
b. S11, S12, S21, S22
Figure 4. Network Analyzer
a) Noise Figure Measurement
a. Equipment: Noise Meter (Aglient E4407B)(Fig.5)
b. Environment: Shielding Room (Fig. 6)
c. Item: N.F (Noise Figure)
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5. Measured Values
5.1. Chip
5.1.1. S11 Smith Chart (Impedance)
5.1.2. S11 Log Chart (Return Loss): Bandwidth S11 <-10dB
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5.1.3. S11 VSR
5.1.4. Radiation Patterns (Excluding LNA)
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Plane
XZ
YZ
XY
Average Gain
-1.62
-1.57
-3.44
Peak Gain
4.92
1.89
2.75
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5.2. Low Noise Amplifier (LNA)
5.2.1. S11 (network analyzer input power -40dB)
5.2.2. S12 (network analyzer input power -40dB)
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SPE-12-8-036/B/WY Page 13 of 15
5.2.3. S21 (Gain) (network analyzer input power -40dB)
5.2.4. 22 (Gain) (network analyzer input power -40dB)
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5.3. Noise Figure
)( TAOGLAS@
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6. Drawing
1
Chip Antenna: 5*3*0.5mm
2
Cable Ø1.13 L=95±5mm
3
IPEX MHFI(U.FL)
4
Shielding Case
5
PCB
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reserves the right to make changes to specifications and product descriptions at any time without notice.
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Reproduction, use or disclosure to third parties without express permission is strictly prohibited.
Copyright © Taoglas Ltd.

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