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

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

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

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

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) (

201495 Allen Lu Advance: (dipole)(monopole)

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201495 Allen Lu Advance: (dipole)(monopole)

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Smith Chart

(dipole)(monopole)

Allen Lu Advance