SGP.1575.25.4.C.02 [TAOGLAS]
Patent pending;
| 型号： | SGP.1575.25.4.C.02 |
| 厂家： | 
Taoglas |
| 描述： | Patent pending |
| 文件： | 总13页 (文件大小：2164K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SGP.25c
Specification
Part No.
SGP.1575.25.4.C.02
GPS SMT Patch Antenna
Product Name
Features
25mm*25mm*4.5mm
1575MHz Centre Frequency
Patent pending
RoHS Compliant
SPE-11-8-139/D/SS
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page 1 of 13
1. Introduction
This ceramic GPS patch antenna is based on smart XtremeGainTM technology. It is
mounted via SMT process and has been selected as optimal solution for the 45x45mm
ground plane.
2. Specification
Original Patch Specification tested on 45mm ground plane
NO
1
PARAMETER
Range of Receiving Frequency
Center Frequency
Bandwidth
SPECIFICATION
1575.42 MHz ± 1.023 MHZ
1575.42 ± 3MHz
8MHz min
NOTES
With 45*45mm Ground Plane
2
Return Loss ≤-10 dB
3
≤ -10 dB
4
Return Loss
1.5 max
Centre Frequency
Centre Frequency
Centre Frequency
Centre Frequency
Centre Frequency
-40°C to +85°C
5
VSWR
+2.0 dBic typ.
-1.0 dBic typ.
3.0 dB max
6
Gain at Zenith
7
Gain at 10°elevation
Axial Ratio
8
RHCP
9
Polarization
50 Ohms
10
11
12
Impedance
0 ± 20ppm / °C
-40°C to +85°C
Frequency Temperature Coefficient (tf)
Operating Temperature
**Changes in user groundplane and environment will offset centre frequency
SPE-11-8-139/D/SS
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page 2 of 13
3. Electrical Specifications
3.1 Return Loss, SWR, Impedance, measured on the test fixture
CH1 RFL LOG
5
dB / REF
0
dB
1:-15.197 dB
1.6843 nH
1 575.420 000 MHz
CH3 RFL 1 U FS
1: 46.533 Ω 1.6843 Ω
*
CH1 Markers
BW: 10.504643 MHz
cent: 1575.615765 MHz
Q: 149.99
Cor
1.57542 GHz
1 loss: -15.197 dB
Cor
3
4
1
3
4
2
2
CH3 Markers
2: 45.992 Ω
16.689 Ω
1.57561 GHz
3: 41.982 Ω
29.475 Ω
1.57036 GHz
4: 43.537 Ω
30.424 Ω
1.58086 GHz
Center 1 575.420 000 MHz
Span 100.000 000 MHz
SPE-11-8-139/D/SS
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3.2 2D Radiation Pattern
0
5
0
-5
-10
-15
-20
-25
-30
-35
-40
-45
-50
90
270
180
Pattern
Model No.
SGP.25.C
SGP.25.C
Test Mode Freq (MHz) Max Gain(dBi)
Min Gain(dBi)
3.70 / 354.00 -17.00 / 105.00
2.92 / 0.00 -8.76 / 2099.00
Avg. Gain(dBi) Source Polar.
1
2
XZ
YZ
1575.42
1575.42
-1.61
-0.96
RHCP
RHCP
Date: 2009 / 9 / 4
SPE-11-8-139/D/SS
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page 4 of 13
4. Mechanical Specifications
4.1 Antenna Dimensions and Drawing
NOTE:
1. Solder mask.
2. Area to be soldered.
3. Dimension of 50 Ohm CPW dependent
on individual board.
Name
SGP.25 Patch 25x25x4 SGP.25C Ceramic Clear
SGP.25 PCB FR 0.5t Green
Part No. Material Finish Quantity
1
2
1
1
4. Matching circuit-capacitor and inductor
values dependent on individual environment
5. Must be soldered to complete antenna
feed connection
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4.2 Antenna Footprint
4.2.1 Top Copper
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4.2 Antenna Footprint
4.2.2 Top Paste
SPE-11-8-139/D/SS
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4.2 Antenna Footprint
4.2.3 Top Mask
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4.2 Antenna Footprint
4.2.4 Composite
SPE-11-8-139/D/SS
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4.3 Test Jig and Dimension
NOTE:
1. Solder Mask (Black)
2. Solder Area
SPE-11-8-139/D/SS | page 10 of 13
4.4 Test Fixture set up and measurements
Antenna Setup
& Measurements
Test Fixture
45 by 45mm
Ground Plane
Patch Antenna
Network Analyzer
S11 Characteristics
Calibration Point
Log map
Smith Chart
SMA Adapter
SPE-11-8-139/D/SS | page 11 of 13
5. Recommended Reflow Soldering Profile
SGP.25.C can be assembled following Pb-free assembly. According to the Standard IPC/JEDEC J-STD-
020C, the temperature profile suggested is as follow:
PHASE
PROFILE FEATURES
Temperature Min(Tsmin)
Temperature Max(Tsmax)
Time(ts) from (Tsmin to Tsmax)
Avg. Ramp-up Rate (Tsmax to TP)
Temperature(TL)
Pb-Free Assembly (SnAgCu)
150°C
PREHEAT
200°C
60-120 seconds
3°C/second(max)
217°C
RAMP-UP
REFLOW
Total Time above TL (tL)
Temperature(TP)
30-100 seconds
260°C
PEAK
Time(tp)
2-5 seconds
RAMP-DOWN
Rate
3°C/second(max)
8 minutes max.
96.5Sn/3Ag/0.5Cu
SHENMAO PF606-P26
Time from 25°C to Peak Temperature
Composition of solder paste
Solder Paste Model
Soldering Iron condition: Soldering iron temperature 270°C±10°C.
Apply preheating at 120°C for 2-3 minutes. Finish soldering for each terminal within 3 seconds, if soldering
iron temperature over 270°C±10°C or 3 seconds, it will make cause component surface peeling or damage.
SPE-11-8-139/D/SS | page 12 of 13
6. Packaging
200 pcs per reel / inner carton
4 reels per outer carton - 800 pcs
Taoglas makes no warranties based on the
accuracy or completeness of the contents
of this document and reserves the right
to make changes to specifications and
product descriptions at any time without
notice. Taoglas reserves all rights to this
Reproduction, use or disclosure to third
parties without express permission is
strictly prohibited.
document and the information contained
herein.
Copyright © Taoglas Ltd.
SPE-11-8-139/D/SS | page 13 of 13
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