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參數資料
型號: ANT-DB1-HDP-TNC
廠商: Linx Technologies Inc
文件頁數: 2/2頁
文件大?。?/td> 317K
描述: ANTENNA DUAL HORZ 1/2WAVE TNC
標準包裝: 50
系列: HDP - Antenna Factor
天線類型: 中心饋電,1/4 波,固定式
頻帶數目: 2
頻率: 860 ~ 960MHz; 1.77 ~ 1.88GHz
VSWR: 1.5
端子: TNC
安裝類型: 粘貼安裝
高度(最大): 0.48"(12.1mm)
包裝: 散裝
 2 
by
Data Sheet ANT-DB1-HDP-xxx
VSWR Graph
What is VSWR?
The Voltage Standing Wave Ratio (VSWR) is a measurement of how well
an antenna is matched to a source impedance, typically 50-ohms. It is
calculated by measuring the voltage wave that is headed toward the load
versus the voltage wave that is reflected back from the load. A perfect
match will have a VSWR of 1:1. The higher the first number, the worse the
match, and the more inefficient the system. Since a perfect match cannot
ever be obtained, some benchmark for performance needs to be set. In
the case of antenna VSWR, this is usually 2:1. At this point, 88.9% of the
energy sent to the antenna by the transmitter is radiated into free space
and 11.1% is either reflected back into the source or lost as heat on
the structure of the antenna. In the other direction, 88.9% of the energy
recovered by the antenna is transferred into the receiver. As a side note,
since the :1 is always implied, many data sheets will remove it and just
display the first number.
How to Read a VSWR Graph
VSWR is usually displayed graphically versus frequency. The lowest point
on the graph is the antennas operational center frequency. In most cases,
this will be different than the designed center frequency due to fabrication
tolerances. The VSWR at that point denotes how close to 50-ohms the
antenna gets. Linx specifies the recommended bandwidth as the range
where the typical antenna VSWR is less than 2:1.
159 Ort Lane, Merlin, OR, US 97532
Phone: +1 541 471 6256
Fax: +1 541 471 6251
www.linxtechnologies.com
SWR
Reflected Power
3:1
2:1
1:1
25%
11%
0%
  CENTER 910.000MHz
  CENTER 1 825.000MHz SPAN 200.000MHz
  CENTER 2 450.000MHz
1.438
1.228
1.282
相關PDF資料
PDF描述
ANT-DB1-LP-RM-01-N ANTENNA LOG PERIODIC TRIPLE BAND
ANT-DB1-RAF-SMA ANTENNA 5.8/2.4GHZ TILT SMA
ANT-DB1-RMS-TNC ANTENNA DUAL BAND TNC
ANT-DB1-RMT-TNC ANTENNA DUAL-BAND ROOF MNT TNC
ANT-DB1-VDP-TNC ANTENNA TRIPPLE BAND VERT TNC
相關代理商/技術參數
參數描述
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ANT-DB1-OM-DW-01-N 功能描述:天線 Omnidirectional Wide band N Fml Connector RoHS:否 制造商:Molex 技術類型:Cellular Antenna 頻率: 帶寬: 尺寸:106.7 mm L x 13 mm W
ANTDB1RAFRPS 制造商:Linx Technologies Inc 功能描述:
ANT-DB1-RAF-RPS 功能描述:天線 RPSMA Dual Band Tilt Swivel 2.4 & 5.8GHz RoHS:否 制造商:Molex 技術類型:Cellular Antenna 頻率: 帶寬: 尺寸:106.7 mm L x 13 mm W
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