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RF天线简介

资料介绍
天線簡介 Zin = Zo l Zin Z0:S§ Zin:é¤J§ ] :ì±`,P°TifY°] = 2 l:é× ZL

ZL + jZ0tan(] Z0 + jZLtan(]

l) l)



/f




= §CW°Ti¤jóéu×A

3*108 103 4

= 1.5 105 ¤ l/f~=0

§Y]l=0 Atan(]l)0AGZin =ZL Gb¤R§CWqAiH¤{éu

W R > 3W

a=1.8W

Douter Z0 =

138

log

Douter Dinner

Dinner

OutersuU¨hRadiationU ¤jAy¨insertion loss U¤jA suU±K¨insertion loss U¤p

RF Connectors Impedance
Z0 = 60lnD/d

RF Connector¤W-v fu = 2c/( k D+d)`

L= f / 4 Zin Require Z0 f Zin = Z0 f
/4 /4

ZL = ZinZL
/4

Apply to real loads and sources Perfect match at spot frequency(10%-20% useable bandwidth)

ZL + jZ0 f Z0 f
/4

tan(]

l) l)

+ jZLtan(]

] Z0 f

l=(2
/4=

)(f /4)= ZinZL

Impedance Match Rule

¨pL

êpL

¨pqe

êpC

Sleeve Dipole Antenna

The current distribution of sleeve antenna is like the dipole antenna

Dipole A
标签:天線簡介
RF天线简介
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