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參數(shù)資料
| 型號(hào)： | ANT-418-MHW-SMA-L |
| 廠商： | Linx Technologies Inc |
| 文件頁數(shù)： | 3/3頁 |
| 文件大小： | 225K |
| 描述： | ANTENNA 418MHZ 1/4WAVE SMA 180" |
| 標(biāo)準(zhǔn)包裝： | 50 |
| 系列： | MHW - Antenna Factor |
| 天線類型： | 中心饋電，1/4 波，固定式 |
| 頻帶數(shù)目： | 1 |
| 頻率： | 418MHz |
| VSWR： | 1.5 |
| 端子： | SMA |
| 安裝類型： | 粘貼安裝 |
| 高度（最大）： | 0.35"（9.0mm） |
| 包裝： | 散裝 |
3
About Gain Plots
The true measure of the effectiveness of an antenna in any given applica-
tion is determined by the gain and radiation pattern measurement. For
antennas gain is typically measured relative to a perfect (isotropic) radia-
tor having the same source power as the antenna under test, the units of
gain in this case will be decibels isotropic (dBi). The radiation pattern is a
graphical representation of signal strength measured at xed distance from
the antenna.
Gain when applied to antennas is a measure of how the antenna radiates
and focuses the energy received into free space. Much like a ashlight
focuses light from a bulb into a speci c direction, antennas can focus RF
energy into speci c directions. Gain in this sense refers to an increase in
energy in one direction over others.
It should also be understood that gain is not free , gain above 0dBi in one
direction means that there must be less gain in another direction. Pictori-
ally this can be pictured as shown in the gures to the right. The orange
pattern represents the radiation pattern for a perfect dipole antenna,
which is shaped like a donut. The pattern for an omnidirectional antenna
with gain is shown in blue. The gain antenna is able to work with a device
located further from the center along the axis of the pattern, but not with
devices closer to the center when they are off the axis the donut has
been squished.
Gain is also related to the overall physical size of the antenna, as well as
surrounding materials. As the geometry of the antenna is reduced below
the effective wavelength (considered an electrically small antenna) the gain
will decrease. As well, the relative distance between an electrically small
antenna and its associated ground will impact antenna gain.
159 Ort Lane, Merlin, OR, US 97532
Phone: +1 541 471 6256
Fax: +1 541 471 6251
www.linxtechnologies.com
by
Gain Plots
E / Vertical Gain
H / Horizontal Gain
Total Gain
XZ-Plane Gain
YZ-Plane Gain
XY-Plane Gain
Data Sheet ANT-418-MHW-xxx-x
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ANT-418-PW-LP | ANTEN 418MHZ PRMNT 1/4 WAVE WHIP |
| ANT-418-PW-QW | ANTEN 418MHZ PRMNT 1/4 WAVE WHIP |
| ANT-418-PW-RA | ANT 418MHZ PRMNT SA 1/4 WAV WHIP |
| ANT-418-YG5-N | ANTENNA YAGI 418MHZ 5-ELEMENT |
| ANT-433-CW-HD | ANTENNA 433MHZ 1/4 WAVE WHIP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ANT-418-MHW-SMA-S | 功能描述:天線 418MHz MHW Dipole SMA, 79’’ Cable RoHS:否 制造商:Molex 技術(shù)類型:Cellular Antenna 頻率: 帶寬: 尺寸:106.7 mm L x 13 mm W |
| ANT-418-PW-LP | 功能描述:天線 Perm Mnt Reducd Ht 1/4 Wave Whip 418MHz RoHS:否 制造商:Molex 技術(shù)類型:Cellular Antenna 頻率: 帶寬: 尺寸:106.7 mm L x 13 mm W |
| ANT-418-PW-QW | 功能描述:天線 Permanent Mount 1/4 Wave Whip 418MHz RoHS:否 制造商:Molex 技術(shù)類型:Cellular Antenna 頻率: 帶寬: 尺寸:106.7 mm L x 13 mm W |
| ANT-418-PW-QW-UFL | 功能描述:418MHz Whip, Straight RF Antenna 380MHz ~ 450MHz 2.9dBi Connector, U.FL Panel Mount 制造商:linx technologies inc. 系列:PW 包裝:托盤 零件狀態(tài):有效 頻率組:UHF（300 MHz ~ 1 GHz） 頻率（中心/帶）:418MHz 頻率范圍:380MHz ~ 450MHz 天線類型:鞭狀，直形 頻帶數(shù):1 VSWR:1.9 回波損耗:- 增益:2.9dBi 功率 - 最大值:- 特性:- 端接:連接器，U.FL 侵入防護(hù):- 安裝類型:面板安裝 高度（最大值）:7.008"（178.00mm） 應(yīng)用:- 標(biāo)準(zhǔn)包裝:24 |
| ANT-418-PW-RA | 功能描述:天線 Perm Mnt Swvl Angle 1/4 Wave Whip 418MHz RoHS:否 制造商:Molex 技術(shù)類型:Cellular Antenna 頻率: 帶寬: 尺寸:106.7 mm L x 13 mm W |
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