ODM/OEM Combo Wimax WiFi GSM  Antenna Manufacturer
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ODM/OEM RF Antenna

Frequency

    174~240MHz
    460~860MHz
    156~164MHz
    340MHz
    400MHz
    433MHz
    850MHz
    900MHz
    915MHz
    1800MHz
    1900MHz
    1575MHz
    2.4GHz
    3.3GHz
    2.4G+ 5GHz
    5GHz
    5.2GHz
    5.8GHz
    704~2620MHz

Applications

    VHF
    DVBT
    UHF
    GSM
    GPRS
    GPS
    GLONASS
    WiFi
    BT
    Zigbee
    Wlan Omni
    LTE
    ISM
    WCDMA
    AIS
    Iridium
    WiMax
    EVDO

Combo Antenna

    GPS+GSM
    GPS+LTE
    GPS+WLAN
    GPS+GSM+WLAN

Repeater

 

Why a Wireless Device Needs the RF Custom Antenna Design?
Antenna is a very important part of a wireless device. A poor antenna or an antenna without tuning will affect the overall performance of a wireless device. A typical example is that a customer tests an antenna alone and finds out that the antenna has a very good performance, so they decide to use this antenna for his project. However, after the antenna is put in their device, he finds out that the performance of the device is below his expectation. Why this situation happens? Because an antenna's efficiency can be easily affected by the dielectric coefficient and mechanism of the device. Besides, there are many EMI and RF signals nearby the antenna, so it will result in an RF antenna that could not perform as what it supposed to be in the wireless device.

Thus, a reliable antenna partner who can help you to design an antenna which perfectly matches your wireless device is very important.
ODM/OEM RF Antenna
Embedded Antenna Design
Issue
1. Poor GSM connection
2. Device is unable to pass the certification
Analysis
The antenna type that customer applied and position that they installed the antenna were inappropriate. Therefore, antenna's efficiency was poor and it resulted in the bad GSM connection. Besides, TRP test value is also very low so that it could not pass the AT&T certification.
Action Takes
1. Avoid the noise sources and suggest a better place to put the new antenna.
2. Customized the embedded antenna with suitable type and it will be more appropriate to fit in the limited space.
3. Debug and experiment in the 3D scanning chamber to ensure the test measurement passes the certification standard.
4. TRP/TIS chart after the antenna is fine tuned:

Test Data 2011/3/15
Trade Name SANVA
Model Name S10A
Test Mode
Free Space &Talking Position
 
Communication System GSM850 EGSM DCS PCS
Channel 128 190 251 975 62 124 512 700 885 512 661 810
Note
Ant. Port I nput Pw. (dBm) 33 33 33 33 33 33 30 30 30 30 30 30
Tot. Rad. Pw. (dBm) 27.85 25.73 25.51 25.67 28.61 26.55 24.64 24.4 25.27 27.69 27.62 28.34


Result
We help our customer to get the AT&T and Vodafone certification. Moreover, the customers save much expense for the lab pre-certification test.
Antenna design project A
Antenna design project B

 Booth : Hall 4-339

Home  |  About Us  |  Customized Antennas  |  Exhibition  |  FAQ  |  Our Partners  |  Contact Us
(23678)11F., No.2, Sec. 4, Jhongyang Rd., Tucheng Dist., New Taipei City 236, Taiwan (R.O.C.)
Tel:886-2-2269-4456  Fax:886-2-2269-4451
Email:etek@etek.com.tw
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