Wednesday, February 4, 2015


Antenna Mounting Structure (AMS) at Masjid Taman Kosas
Generally, wireless network technology utilises frequencies in the microwave spectrum. Microwave frequencies generally start at about 1GHz and up to tens of GHz. In comparison, radio waves used for AM and FM broadcasts as well as television is generally measured in the KHz and MHz ranges (1GHz is 1000MHz).
As wireless applications continue to expand, antennas that can handle more than one frequency band are gaining in importance. For two of the more popular wireless frequency bands—those for Wi-Fi/WiMAX applications at 2.4 and 3.6 GHz—a microstrip patch antenna was developed in a compact size and with versatile frequency characteristics. The microstrip circuit is capable of multiple resonant frequencies.
The third generation technology used in the Malaysia is called UMTS. Malaysia is using W-CDMA 2100 radio access technology (Wideband Code Division Multiple Access) which is a component of IMT-2000 standard set (International Mobile Telecommunications-2000).
    Allocated Frequency Band in Malaysia:
    Frequency Division Duplex (FDD):
    a) Lower Band: 1920 - 2010 MHz
    b) Upper Band: 2110 - 2200 MHz
    Time Division Duplex (TDD):
    a) Lower Band: 1915 - 1920 MHz
    b) Upper Band: 2010 - 2025 MHz
    IMT-2000 Operators in Malaysia:
    a) Celcom
    b) UMTS
    c) U Mobile
    d) DiGi

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