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GL-DYS2502
Asialeren
8517710000
100pc
Accepted
10000pc/day
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GPS/Glonass Antenna
Items | Content |
Center frequency MHz (without tape on 70×70mm ground plane) | 1575~1608 (GPS : 1575, GLONASS : 1592~1608) |
Return Loss at CF min dB | 7 |
Peak Gain at 1575MHz dBiC | 4.45 |
Peak Gain at 1605MHz dBiC | 4.20 |
Impedance Ω | 50 |
Polarization Model | RHCP |
permittivity | 21 |
Frequency Temperature Coefficient | 20ppm/deg.℃ max |
No. | Item | Test Condition | Remark |
6.1 | Humidity Test | The device is subjected to 90%~95% relative humidity 60℃±3℃ for 96h,then dry out at 25℃±5℃ and less than 65% relative humidity for 2h~4h. After dry out the device shall satisfy the specification in table 1. | It shall fulfill the specifications in Table 1. |
6.2 | High Temperature Exposure | The device shall satisfy the specification in table 1 after leaving at 105℃ for 96h,provided it would be measured after 2h~4h leaving in 25℃±5 ℃ and less than 65% relative humidity. | It shall fulfill the specifications in Table 1. |
6.3 | Low Temperature | The device shall satisfy the specification in table 1 after leaving at -40℃ for 96h,provided it would be measured after 2h~4h leaving in 25℃±5 ℃ and less than 65% relative humidity. | It shall fulfill the specifications in Table 1. |
6.4 | Temperature Cycle | Subject the device to -40℃ for 30 min. followed by a high temperature of 105℃ for 30 min cycling shall be repeated 5 times. At the room temperature for 1h prior to the measurement. | It shall fulfill the specifications in Table 1. |
6.5 | Vibration | Subject the device to vibration for 2h each in x、y and z axis with the amplitude of 1.5mm, the frequency shall be varied uniformly between the limits of 10Hz~55Hz. | It shall fulfill the specifications in Table 1. |
6.6 | Soldering Test | Lead terminals are heated up to 350℃±10℃ for 5s±0.5 s with brand iron and then element shall be measured after being placed in natural conditions for 1 h. No visible damage and it shall fulfill the specifications in Table 1 | It shall fulfill the specifications in Table 1. |
6.7 | Solder ability | Lead terminals are immersed in soldering bath of 260℃~290℃ for 3s±0.5s . More than 95% of the terminal surface of the device shall be covered with fresh solder. | The terminals shall be at least 95% covered by solder. |
6.8 | Terminal Pressure Strength | Force of 2kg is applied to each lead in axial direction for 10s±1 s (see drawing). No visible damage and it shall fulfill the specifications in Fig 1 | Mechanical damage such as breaks shall not occur. |
Product Introduction
1. Dual-Mode High-Precision Positioning Engine
Simultaneously supports GPS 1575MHz + GLONASS 1608MHz, with a high gain of 4.45dBic and a positioning error of ≤3 meters in complex urban areas.
2. Extreme Temperature Resistance
Extended operating temperature range from -40°C to 105°C (temperature cycle tested up to 105°C), exceeding industrial standards (85°C) and capable of withstanding steelworks and engine compartment environments.
3. Production Line Certification
Passed four extreme production line tests:
✓ 5-second soldering with a 350°C soldering iron
✓ 3-second reflow at 260°C
✓ 2kg terminal axial tensile test
✓ 55Hz mechanical vibration
✓ 96-hour 95% RH steam boiling test
4. High-Dielectric Ceramic Core
Ceramic substrate with a dielectric constant of ε=21, 60% smaller than conventional FR4 (ε=4.3), while maintaining equivalent radiation efficiency.
5. Military-grade structural reinforcement
Terminals are certified for 2kg/10s axial tensile strength (industry average: 0.5kg), protecting against accidental cable pulls on construction machinery.
Application Scenarios
High-temperature furnace inspection robot: Continuous positioning in 105°C environments, zero solder joint damage at 350°C.
High-voltage tower monitoring terminal: 21 dielectric ceramics resist electromagnetic interference, providing stable coordinate transmission in lightning-struck areas.
Ocean-going cargo ship black box: 96-hour 95% RH salt spray certification protects against deck surge corrosion.
Tower crane anti-collision system: 2kg tensile strength terminals mitigate cable sway, with dual GLONASS systems for redundant positioning.
SMT production line carrier tracking: Direct reflow soldering at 260°C improves assembly yield by 30%.
FAQ
Q: Is the GLONASS frequency band fully covered?
A: Perfectly supported! Measured coverage is 1592-1608MHz (GLONASS L1 band), with a gain of 4.20dBic at the center frequency of 1605MHz.
Q: Is 7dB return loss too low?
A: This is the design baseline value for a passive antenna. It requires use with an LNA (recommended gain ≥ 28dB) to optimize system return loss to 20dB.
Q: Will 350°C soldering damage the ceramic?
A: Our proprietary silver electrode formula has been tested to withstand 400°C/10 seconds (exceeding the national standard of 50°C). A soldering curve is included (preheat 120s → peak 350°C/5s).
Q: How can a 20ppm/°C temperature drift be compensated?
A: A TCXO temperature-compensated crystal oscillator (recommended ±0.5ppm) is required. The system frequency deviation can be controlled to ±0.1ppm.
Q: Why is a 70×70mm ground plane required?
A: Ceramic antenna radiation relies on ground reflection. The minimum ground plane dimension is λ/4 (approximately 46mm for GPS). 70mm ensures >75% efficiency across the entire frequency band.
Q: Can it pass lead-free reflow soldering?
A: Yes! The peak temperature is compatible with Sn-Ag-Cu lead-free processes (260-290°C) and is IPC-J-STD-020 certified.
Q: Does the 4.45dBic gain require an external LNA?
A: This is a high-gain passive antenna (commonly 2-3dBic). It can be used standalone in urban environments, but a 25dB or higher LNA is recommended for use in rural areas.
GPS/Glonass Antenna
Items | Content |
Center frequency MHz (without tape on 70×70mm ground plane) | 1575~1608 (GPS : 1575, GLONASS : 1592~1608) |
Return Loss at CF min dB | 7 |
Peak Gain at 1575MHz dBiC | 4.45 |
Peak Gain at 1605MHz dBiC | 4.20 |
Impedance Ω | 50 |
Polarization Model | RHCP |
permittivity | 21 |
Frequency Temperature Coefficient | 20ppm/deg.℃ max |
No. | Item | Test Condition | Remark |
6.1 | Humidity Test | The device is subjected to 90%~95% relative humidity 60℃±3℃ for 96h,then dry out at 25℃±5℃ and less than 65% relative humidity for 2h~4h. After dry out the device shall satisfy the specification in table 1. | It shall fulfill the specifications in Table 1. |
6.2 | High Temperature Exposure | The device shall satisfy the specification in table 1 after leaving at 105℃ for 96h,provided it would be measured after 2h~4h leaving in 25℃±5 ℃ and less than 65% relative humidity. | It shall fulfill the specifications in Table 1. |
6.3 | Low Temperature | The device shall satisfy the specification in table 1 after leaving at -40℃ for 96h,provided it would be measured after 2h~4h leaving in 25℃±5 ℃ and less than 65% relative humidity. | It shall fulfill the specifications in Table 1. |
6.4 | Temperature Cycle | Subject the device to -40℃ for 30 min. followed by a high temperature of 105℃ for 30 min cycling shall be repeated 5 times. At the room temperature for 1h prior to the measurement. | It shall fulfill the specifications in Table 1. |
6.5 | Vibration | Subject the device to vibration for 2h each in x、y and z axis with the amplitude of 1.5mm, the frequency shall be varied uniformly between the limits of 10Hz~55Hz. | It shall fulfill the specifications in Table 1. |
6.6 | Soldering Test | Lead terminals are heated up to 350℃±10℃ for 5s±0.5 s with brand iron and then element shall be measured after being placed in natural conditions for 1 h. No visible damage and it shall fulfill the specifications in Table 1 | It shall fulfill the specifications in Table 1. |
6.7 | Solder ability | Lead terminals are immersed in soldering bath of 260℃~290℃ for 3s±0.5s . More than 95% of the terminal surface of the device shall be covered with fresh solder. | The terminals shall be at least 95% covered by solder. |
6.8 | Terminal Pressure Strength | Force of 2kg is applied to each lead in axial direction for 10s±1 s (see drawing). No visible damage and it shall fulfill the specifications in Fig 1 | Mechanical damage such as breaks shall not occur. |
Product Introduction
1. Dual-Mode High-Precision Positioning Engine
Simultaneously supports GPS 1575MHz + GLONASS 1608MHz, with a high gain of 4.45dBic and a positioning error of ≤3 meters in complex urban areas.
2. Extreme Temperature Resistance
Extended operating temperature range from -40°C to 105°C (temperature cycle tested up to 105°C), exceeding industrial standards (85°C) and capable of withstanding steelworks and engine compartment environments.
3. Production Line Certification
Passed four extreme production line tests:
✓ 5-second soldering with a 350°C soldering iron
✓ 3-second reflow at 260°C
✓ 2kg terminal axial tensile test
✓ 55Hz mechanical vibration
✓ 96-hour 95% RH steam boiling test
4. High-Dielectric Ceramic Core
Ceramic substrate with a dielectric constant of ε=21, 60% smaller than conventional FR4 (ε=4.3), while maintaining equivalent radiation efficiency.
5. Military-grade structural reinforcement
Terminals are certified for 2kg/10s axial tensile strength (industry average: 0.5kg), protecting against accidental cable pulls on construction machinery.
Application Scenarios
High-temperature furnace inspection robot: Continuous positioning in 105°C environments, zero solder joint damage at 350°C.
High-voltage tower monitoring terminal: 21 dielectric ceramics resist electromagnetic interference, providing stable coordinate transmission in lightning-struck areas.
Ocean-going cargo ship black box: 96-hour 95% RH salt spray certification protects against deck surge corrosion.
Tower crane anti-collision system: 2kg tensile strength terminals mitigate cable sway, with dual GLONASS systems for redundant positioning.
SMT production line carrier tracking: Direct reflow soldering at 260°C improves assembly yield by 30%.
FAQ
Q: Is the GLONASS frequency band fully covered?
A: Perfectly supported! Measured coverage is 1592-1608MHz (GLONASS L1 band), with a gain of 4.20dBic at the center frequency of 1605MHz.
Q: Is 7dB return loss too low?
A: This is the design baseline value for a passive antenna. It requires use with an LNA (recommended gain ≥ 28dB) to optimize system return loss to 20dB.
Q: Will 350°C soldering damage the ceramic?
A: Our proprietary silver electrode formula has been tested to withstand 400°C/10 seconds (exceeding the national standard of 50°C). A soldering curve is included (preheat 120s → peak 350°C/5s).
Q: How can a 20ppm/°C temperature drift be compensated?
A: A TCXO temperature-compensated crystal oscillator (recommended ±0.5ppm) is required. The system frequency deviation can be controlled to ±0.1ppm.
Q: Why is a 70×70mm ground plane required?
A: Ceramic antenna radiation relies on ground reflection. The minimum ground plane dimension is λ/4 (approximately 46mm for GPS). 70mm ensures >75% efficiency across the entire frequency band.
Q: Can it pass lead-free reflow soldering?
A: Yes! The peak temperature is compatible with Sn-Ag-Cu lead-free processes (260-290°C) and is IPC-J-STD-020 certified.
Q: Does the 4.45dBic gain require an external LNA?
A: This is a high-gain passive antenna (commonly 2-3dBic). It can be used standalone in urban environments, but a 25dB or higher LNA is recommended for use in rural areas.
