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Address: No.53, Shayong Rd, Shatou,
Contact name:Brady Mao
Dongguan Tengxiang Electronics Co., Ltd. |
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Black color GSM SMA male connector mount rubber duck antenna can be bendable
Black color indoor and outdoor Black color GSM SMA male connector mount rubber duck antenna with M10x138mm size plastic body, this antenna can be bended for 90 degrees.
GSM GPRS Antenna Description:
| Material: | Plastic | Color: | Black Or White Or Gray Or Customized |
|---|---|---|---|
| Frequency: | GSM | Impedance: | 50 Ohm |
| Maximum Input VSWR: | 2:1 | Gain: | 3Dbi |
| Polarization: | Vertical | Radiation: | Omni-directional |
| Connector: | SMA Plug Or Customized | Length: | 13x138mm |
Please kindly know that the frequency, length, connector and body color can be customized.
Before the rubber ducky, antennas on portable radios usually
consisted of quarter-wave whip antennas, rods whose length was
one-quarter of the wavelength of the radio waves used. In the
VHF range where they were used, these antennas were 2 or 3 feet
(0.60 to 0.91 meter) long, making them cumbersome. They were often
made of telescoping tubes that could be retracted when not in use.
To make the antenna more compact, electrically short antennas,
shorter than one-quarter wavelength, began to be used. Electrically
short antennas have considerable capacitive reactance, so to make
them resonant at the operating frequency an inductor is added
in series with the antenna. Antennas which have these inductors
built into their bases are called base-loaded whips.
