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Address: F5,Building8, changshunchuanggu, jinfeng,Zhangjiagang 215625,China
Contact name:Jerry Sun
Zhangjiagang RY Electronic CO.,LTD |
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15*15mm 18*18mm 25*25mm Internal Ceramic Patch GPS Build-in Antenna For Navigation
What are the important parameters of ceramic antenna?
1. VSWR voltage standing wave ratio
The VSWR is less than 2.0, and the VSWR at the working frequency point is less than 1.5. If the VSWR is too large, the communication distance will be shortened, and the reflected power will return to the power amplifier part of the transmitter, which is easy to burn the power amplifier tube and affect the normal operation of the communication system.
2. Bandwidth
Generally, the electrical parameters of ceramic antenna are related to the working frequency. To ensure the allowable frequency variation range of electrical parameters is the working bandwidth of ceramic antenna. Generally, the working bandwidth of omnidirectional ceramic antenna can reach 5-8% of the working frequency range, and that of directional ceramic antenna can reach 3-10% of the working frequency range.
3. Gain
Gain is one of the main indexes of ceramic antenna. It is the
product of direction coefficient and efficiency, and it is the
performance of the size of the wave radiated or received by the
ceramic antenna. The choice of gain depends on the requirements of
the system design for the coverage area of the wave. In short,
under the same conditions, the higher the gain, the farther the
distance of the wave propagation.
4. Noise figure
The larger the coefficient is, the larger the noise will be, which indicates that the more noise will be added in the transmission process, reflecting the unsatisfactory characteristics of the device or channel. When the noise figure of the amplifier is low, the noise figure of the amplifier is usually expressed by the noise temperature (T).
Electrical Characteristics:
| Frequency Range (MHz) | 1575.42MHz±3MHz | Gain(dBi) | 28 |
| Input Impendence (Ω) | 50 | V.S.W.R (≤) | 1.5 |
| Max Input Power (W) | 50 | Radiation | omni |
| Connector Type | / | Polarization Type | Right circular polarization |
| Material | / | Wire Length (m) | / |
| Packing | 50pcs/a bag | Angle Adjustable | / |
| (mm) | 25*25*4 | Net Weight (g) | / |
| Working Temp (℃) | -40℃-85℃ | Storage Temp (℃) | -20℃-40℃ |
Ceramic antenna is another kind of miniaturized antenna suitable for Bluetooth devices. The types of ceramic antenna are divided into block ceramic antenna and multilayer ceramic antenna. Block antenna uses high temperature to sinter the whole ceramic body at one time, and then prints the metal part of the antenna on the surface of the ceramic block.
The multilayer antenna is fired in the way of low temperature co firing. The multilayer ceramic is laminated and aligned, and then sintered at high temperature. Therefore, the metal conductor of the antenna can be printed on each layer of ceramic dielectric layer according to the design requirements. In this way, the antenna size can be effectively reduced, and the purpose of hiding the antenna can be achieved. Because the dielectric constant of ceramic is higher than that of PCB, ceramic antenna can reduce the size of antenna effectively
Ceramic antenna is made of ceramic and weighs only 200g. Its frequency range is between 902mhz and 928mhz. Moreover, the dielectric loss of ceramic is smaller than that of PCB, so it is very suitable for Bluetooth module with low power consumption. The effect of ceramic antenna is better than that of on-board antenna. Generally, it has ant access pin and anchor, so it is very convenient to use.
The ceramics of ceramic antenna are used in radio. In addition to capacitors, there is also a device called ceramic filter (because it is connected to the antenna circuit, many people mistakenly think it is an antenna). It is made of lead zirconate titanate ceramic material. The ceramic material is made into flakes, and both sides are coated with silver as electrodes. After DC high voltage polarization, it has piezoelectric effect. It plays the role of filtering and has the characteristics of stability and good anti-interference performance.
Ceramic antenna has four important parameters: gain, VSWR, noise figure and axial ratio. Especially the axis ratio, which is an important index to measure the difference of signal gain in different directions.
Product Details:
Our Company:
1. RY Electronics has over 10 years of experience designing and
manufacturing custom cable assemblies and antennas in large or
small volumes depending on your needs.
2. Our manufacturing facilities can build just about many types of
custom cable assembly(LVDS cable/Flat cable/RF cable/wire harness)
as well as GPS/WIFI/ISM/GSM/3G/4G antenna and RF connectors.
Our Advantages:
1. Nearly 10 years of rich marketing experience and has sufficient
supplies and materials.
2. Financially sounded and has the continuous line service from
R&D to designing, manufacturing and marketing.
3. Our products have a wide field of applications including
industry, communication, information, automobiles, computer
peripherals.
4. Competitive price,We devote ourselves in providing products with
market differentiation and high performance.
5. We reduce the impact and damages caused to the environment,
abide international environmental regulations and seek to be green
and eco-friendly.
FAQ:
1. When can I ?
We usually quote within 24 hours after we get your inquiry. If you
are very urgent to get the price, please call us or tell us in your
email so that we will regard your inquiry priority.
2. Do you have stock?
We don’t have stock; we’ll start production after receiving
PO.
3.What's information do you need for quoting?
For Cable harness, please advise cable specs, part number, or send
drawings.
For Connectors, please kindly advise series pins, male or female,
molded, field assembly panel mount type and cable length.
4. What's your payment terms?
100 % T/T before delivery
5. What is your terms of delivery?
We are accept EXW, FOB, CIF, etc. You can choose the one which is
the most convenient or most cost-effective for you.
Packaging & Shipping:
1. Usually we ship your order by sea or by air.
2. We do our best to ship your order within 1 week after receiving
your payment
3. We'll tell you the tracking number once your order has been
sent.
4. We accept T/T Bank transfer, L/C, Western Union, Moneygram, Paypal.
