Tech Support - Antennas
Dual Polarity Antennas & MIMO (carrier-grade antennas)
Characteristics of Dual Polarity Antennas:
Have horizontal and vertical antennas in a same antenna.Antennas of dual polarity are high-speed, bandwidth for VOIP and streaming mediaOptimized for high d
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Posted by George Hardesty on 15th Aug 2022
Spatial Diversity Overcomes Multi-Path Interference | Wireless Links Over Water
Spatial Diversity:
Spatial diversity is a useful feature for overcoming multi-path interference. By providing spatial diversity, the radio's internal circuitry can select between the two re
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Posted by George Hardesty on 25th Jul 2020
GPS antennas: Key Physical and Electrical Characteristics
What is a GPS antenna?
A GPS antenna is a radio frequency antenna that provides
connectivity with the Global Positioning System, a proprietary, satellite-based radio navigation system designed, c
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Posted by George Hardesty on 25th Jul 2020
Antenna Radiation Patterns: H-Plane, E-Plane, XY XZ YZ Planes
Antenna Radiation Patterns:
This article explains radiation patterns, detailing how polarization (linear and vertical) relates to the E-Plane and H-Plane, and how XY, XZ and YZ planes correspond
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Posted by George Hardesty on 19th Apr 2020
Maximum Input Power Rating of Antennas
Antenna Maximum Input Power Rating:
Maximum Input Power is defined as: The maximum amount of power (voltage given in Watts) that is able to be transmitted to a single antenna without damage to the
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Posted by George Hardesty on 6th Nov 2019
Antenna Polarization: Vertical, Linear: Key Factor in Selection of an Antenna
Antenna Polarization:Polarity is a key electrical characteristic to be considered when selecting an antenna. Like-matched antennas in an RF set-up will have optimal power or signal transfer in point-t
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Posted by George Hardesty on 11th Oct 2019
FPV (First Person View) Antennas for Drones
FPV Antennas for Drones:
FPV (First Person View), are remotely controlled vehicles from a pilot’s or drivers point of view. They include unmanned aerial vehicles such as drones and ground vehicles s
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Posted by George Hardesty on 11th Oct 2019
45-degree Slant Antenna Polarization Overcomes Interference and Issue w/ Dual-Polarization
45-degree Slant Antenna Polarization:
Signals received at base station
antennas are typically elliptically polarized in a way more like vertical polarization than horizontal polarization.
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Posted by George Hardesty on 19th May 2019
VSWR: Impedance Matching in Antennas & Antenna Cables
VSWR Explained:
Voltage Standing Wave Ratio (VSWR) is a key Indicator of antenna performance (along with gain/dBi): The lower the VSWR, the more efficient the antenna.
VSWR is a measure of
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Posted by George Hardesty on 18th May 2019
dBi, dB, dBm dB(mW): Defined, Explained and Differentiated
dBi Values Explained:
dBi = dB(isotropic): The forward gain of an antenna, measured in decibels (dBi), The dBi value reflects the antenna's directional / beamwidth characteristics, i.e., di
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Posted by George Hardesty on 27th Apr 2019
Operate 2 Antennas from One Radio: Use a "Power Divider" or "Antenna Combiner" - NOT a T-adapter
Power Divider / Antenna Combiner:
Do not use a "T connection" to get one AP to service two antennas: This causes many problems, further described below. By "T connection," we mean T-adapter to combin
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Posted by George Hardesty on 26th Apr 2019
If Antenna frequency band exceeds needed range: Use Filter on system board to reduce excess band
Antenna Frequency Exceeds Range:
Example: You need only 860-960 MHz GSM band but the antenna covers 800-960MHz: One customer told us that using an antenna that includes 824-960 band allows
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Posted by George Hardesty on 12th Apr 2019
dBm to Watt Conversion Table
Upgrading your antenna, even just a small increment in dBm, makes a HUGE impact on the range of your device:
(dbm is logarithmic and mw is linear.)
dBm
0
1
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Posted by George Hardesty on 31st Mar 2019
