Reciprocity and Other Antenna Characteristics
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Transcript of Reciprocity and Other Antenna Characteristics
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5/26/2018 Reciprocity and Other Antenna Characteristics
1/11Reciprocity 1
Reciprocity
NETWK+V
_
A B
NETWK+V
_
A B
I
TWO
ANTA B
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2/11Reciprocity 2
Antenna BAntenna A
Transmit on A Receive on B
Transmit on B Receive on A
SamePattern for
Antenna A
SAME
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5/26/2018 Reciprocity and Other Antenna Characteristics
3/11Reciprocity 3
Polarization
Linear
Circular
TR kPP TR kPP dBkPP TR 3 0RP
45o
Minor Axis
Major Axis
Right-Hand Left-Hand
E
AR=Axial Ratio
= Major / Minor
EEE
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5/26/2018 Reciprocity and Other Antenna Characteristics
4/11Reciprocity 4TR
kPP 0RP
dBkPP TR 3
RH or LH RH or LH
LH
RHRH
RH
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5/26/2018 Reciprocity and Other Antenna Characteristics
5/11Reciprocity 5
To get CP from 2 LP Antennas
LHP090I
00I
LH RH
Linear
Pol
To get LP from 2 CP Antennas
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5/26/2018 Reciprocity and Other Antenna Characteristics
6/11Reciprocity 6
4
4
(thin)4280 jZin
001.0a
dBi15.2spacefreeinGain
Dipoles
or Half Wave Dipoles
2
I
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5/26/2018 Reciprocity and Other Antenna Characteristics
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Reciprocity 7
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5/26/2018 Reciprocity and Other Antenna Characteristics
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Reciprocity 8
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Reciprocity 9
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Reciprocity 10
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Reciprocity 11