GPS/Beidou Dielectric Patch Antenna_深圳市四维领航电子科技有限公司

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GPS/Beidou Dielectric Patch Antenna

Views：1098 Date：2016-10-16

Miniature antenna element for Global Positioning Systems (GPS)

Details

Miniature antenna element for Global Positioning Systems (GPS)

◆ Principal Parameters(主要参数)

Part No. 型号	Size (mm) 尺寸	Center Frequency (MHz) 中心频率	Band Width (MHz) 带宽	Gain (dBi) 增益	Ground Plane (mm) 接地面积	Application 应用
DA1575S25T45B	25×25×4.5	1575.42	≥20	5.0	70×70	GPS
DA1575S25T4A	25×25×4	1575.42	≥15	4.5	35×35
DA1575S25T4B	25×25×4	1575.42	≥15	4.5	70×70
DA1575S25T3A	25×25×3	1575.42	≥15	4.5	35×35
DA1575S25T2B	25×25×2	1575.42	≥15	4.0	70×70
DA1575S20T4	20×20×4	1575.42	≥10	3.5	20×20
DA1575S20T2	20×20×2	1575.42	≥10	3.5	20×20
DA1575S18T4	18×18×4	1575.42	≥10	3.0	18×18
DA1575S18T2	18×18×2	1575.42	≥10	2.5	18×18
DA1575S15T45	15×15×4.5	1575.42	≥10	2.0	15×15
DA1575S15T4	15×15×4	1575.42	≥8	1.5	15×15
DA1575S15T2	15×15×2	1575.42	≥8	1.0	15×15
DA1575S13T4	13×13×4	1575.42	≥5	0.0	13×13
DA1575S13T3	13×13×3	1575.42	≥5	0.0	13×13
DA1575S13T2	13×13×2	1575.42	≥5	0.0	13×13
DA1575S12T6	12×12×6	1575.42	≥5	0.0	12×12
DA1575S12T4	12×12×4	1575.42	≥5	0.0	12×12
DA1575S12T2	12×12×2	1575.42	≥5	0.0	12×12
DA1575S36T4	36×36×4	1575.42	≥30	5.0	80×80
DA1268S25T45B	25×25×4.5	1268.42	≥20	5.0	70×70	北斗
DA1268S25T4A	25×25×4	1268.42	≥15	4.5	35×35
DA1268S25T4B	25×25×4	1268.42	≥15	4.5	70×70
DA1268S25T3A	25×25×3	1268.42	≥15	4.5	35×35
DA1268S25T2B	25×25×2	1268.42	≥15	4.0	70×70
DA1268S20T4	20×20×4	1268.42	≥10	3.5	20×20
DA1268S20T2	20×20×2	1268.42	≥10	3.5	20×20
DA1268S18T4	18×18×4	1268.42	≥10	3.0	18×18
DA1268S18T2	18×18×2	1268.42	≥10	2.5	18×18
DA1268S15T45	15×15×4.5	1268.42	≥10	2.0	15×15
DA1561S15T4	15×15×4	1561.42	≥8	1.5	15×15
DA1561S15T2	15×15×2	1561.42	≥8	1.0	15×15
DA1561S13T4	13×13×4	1561.42	≥5	0.0	13×13
DA1561S13T3	13×13×3	1561.42	≥5	0.0	13×13
DA1561S13T2	13×13×2	1561.42	≥5	0.0	13×13
DA1561S12T6	12×12×6	1561.42	≥5	0.0	12×12
DA1561S12T4	12×12×4	1561.42	≥5	0.0	12×12
DA1561S12T2	12×12×2	1561.42	≥5	0.0	12×12
DA1561S36T4	36×36×4	1561.42	≥30	5.0	80×80
DA1268S25T4	25×25×4	1268	≥10	4.5	70×70
DA1268S35T4	35×35×4	1268	≥10	6.0	50×50
DA1595S25T4	25×25×4	1595	≥10	4.5	70×70
DA1595S35T4	35×35×4	1595	≥40	6.0	50×50
DA2492S25T4	25×25×4	2492	≥10	4.0	25×25
DA2492S35T4	35×35×4	2492	≥50	6.0	50×50
DA2450D16	Φ16	2450	45	2.1	50×70	W-LAN
DA1616S25(Tx)	25×25×4	1616	≥10	4.0	70×70	Beidou Satellite Position System 北斗双星天线
DA2492S25(Rx)	25×25×4	2492	≥10	4.0	70×70	Beidou Satellite Position System 北斗双星天线

注：以上参数仅作为参考，可根据用户要求设计。

Products

ielectric Antenna has been used very widely in the current field of satellite navigation and surveying and satellite TV reception. As the antenna in a small volume can get a larger gain, it is widely used in the products which claim a higher volume.
In the current market, most of the GPS Dielectric Antenna’s size is 25 * 25 * 4mm, with the miniaturization of the system on the market , there are already more smaller size antenna for GPS navigation system.

Features

A variety of sizes, high temperature stability, high-quality dielectric ceramics, high-gain, low noise, excellent pattern.

Method of Definiton

①Dielectric Antenna
②Center Frequency
③Structure
④Dimensions
⑤Thickness
T4: 4.0mm；T2: 2.0mm；T45: 4.5mm；T35: 3.5mm；T6: 6.0mm；T3: 3.0mm

Instructions for use

Around the antenna (2~5mm) is clearance and not to parallel to the main board and panel as possible. That means the surface of the patch antenna should be higher than the surrounding surface, in order to cause the antenna to the maximum radiation gain
Around the antenna can’t put metal objects, The whole shell can’t be covered the metal spray paint and jerked the metal objects.
As the patch antenna is a directional antenna, the surface of antenna should be placed toward the sky.
Under the conditions of the space on the client machine, the reflector is larger, that means the size of the PCB is larger, the antenna gain is higher and the reception is better.
Magnetic field around the antenna can’t exist, that is not possible to put magnets around the antenna
Different color and material has a direct impact on the frequency. They need to be debugged separately while the customer’s same machine usually have two to three colors.
The machine debugging require to proved complete parts, including Main Board, Battery, Panel and Shielding Case etc. Try to provide the final production models, because the customer's design changes are affecting the electrical specifications of the antenna.
EMI interference is the biggest problem affecting the antenna debugging.
Because while the antenna receiving the signal, the noise will also be received into the system. Once the EMI interference in the vicinity of the antenna center frequency is greater, the CN values will decline directly.
Therefore, for large EMI interference, poor reception are not bad debugged to antenna, which may be the customer's machine in the irrational process of wiring board layout, grounding caused.
Currently we can only adjust the offset frequency of antenna to try to avoid EMI interference frequency, and slightly improve reception. If debugging the offset frequency is invalid, then we only can provide the best results to customers.
For EMI interference of the machine is serious, we should take the customer to confirm whether there will be cost down program. For the EMI will be different between the cost down and before, It maybe lead to poor reception for debugged samples or shipping antenna, and returns etc.
In this case, it should be clearly distinguished if the components of client machine are changed, these changes will affect the antenna, rather than the poor performance of the antenna itself.