Tuesday, September 29, 2009
Sunday, September 27, 2009
Lokasi Antenna Mobile yang sesuai
Radiation Pattern of Mobile Antennas
Most people think that antennas mounted on vehicles are omnidirectional. This is mostly true, but the radiation pattern is influenced greatly by the body of the vehicle. Remember we stated that the body acts as the "radials" for the antenna? Well, we know that the body does not extend around the base on the antenna equally. Figure 2 shows how the radiation pattern of a whip is influenced by the body of the vehicle. As you can see, the shape of the pattern depends on where you mount the antenna. The pattern is "pulled" to areas where there is the most vehicle body. The pattern is the worst in directions where there is no metal body for a radial.
Wednesday, September 16, 2009
Monday, September 14, 2009
TERIMA KASIH KERANA MENGUNJUNGI LAMAN BLOG ASTRA JOHOR, DAERAH JOHOR BAHRU
JIKA ANDA INGIN MENJADI AHLI ASTRA, BOLEH MASUKKAN MAKLUMAT ANDA DI BORANG YANG DISEDIAKAN. SILA BUAT CATATAN MOHON MENJADI AHLI DIRUANG ALAMAT.
JIKA ANDA SUDAH MENJADI AHLI ASTRA, SILA KEMASKINI MAKLUMAT ANDA. TERIMA KASIH.
|