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201495 Allen Lu Advance: (dipole)(monopole)
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0
Allen Lu Advance
2009111
(dipole)(monopole)
GPS EMI EMC
(dipole and monopoleantenna)
Fig. 1a ()() Fig. 1b (virtue capacitance) model
(parasitic capacitance)
ground, ()( Fig. 1c Mio Panasonic
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201495 Allen Lu Advance: (dipole)(monopole)
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Fig. 1a and 1b
Fig. 1c
Fig. 2a RF (potentialdifference)) Fig. 2a ground ground ground ( FM ) Fig. 2c
Fig. 2b
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201495 Allen Lu Advance: (dipole)(monopole)
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Fig. 2a and 2b
Fig. 2c
EMC
EMC EMC RF RF radiation
Fig. 3
Fig. 3 ( common mode voltage) RF common mode voltage
EMC
( ground)circuit ground ground RF circuit ground
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201495 Allen Lu Advance: (dipole)(monopole)
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ground RF RF
RF bypass RF
common-mode choke common-mode radiation current
shielding
, I, Fig. 4a 0. ( 1/10) 0.5I1/4) sinusoidal, Fig. 4(b) 0.68I
Fig. 4a and 4b
radiation radiation radiation radiation 50% radiation 64%. dipole
Fig. 5a and 5b
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201495 Allen Lu Advance: (dipole)(monopole)
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Fig. 5a ""
Fig. 5b Fig. 1c I, 1/4 36%
(PA) LNA
radiate model "radiationresistance". Fig. 6a R-L-C.
Fig. 6a and 6b:
(>>100 Ohm)(>> 100 Ohm) (
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201495 Allen Lu Advance: (dipole)(monopole)
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201495 Allen Lu Advance: (dipole)(monopole)
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(dipole)(monopole)
Allen Lu Advance