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Amateur hufanya hatua ya antenna paraboloid --- uhusiano wa Q mionzi deflection ya F / D ya antenna paraboloid na chanzo cha kufanya sasa ya
F / D (lengo ni kwamba F parabola, caliber kwamba D ni parabola) Q deflection na chanzo cha kufanya sasa ni ya appurtenant uhusiano, mduara wa antenna paraboloid kwamba uwezo anaamua unataka kufanya baada ya deflection kwamba ana sababu ya kufanya sasa ya tu kwamba ni kusema ni affirmatory reachs focal urefu. Kujua F / D = 0.3 tu kama Amateur-- 0.5 halitoshi, jinsi gani wanaweza kufanya tu fomu seti kamili ya antenna na chanzo cha kufanya sasa ya matumizi sahihi F / D yaani, tatizo hili ni kubwa sana, ufanisi kwamba unaathiri mfumo wa angani moja kwa moja na barua ya machafuko ya sauti ni ikilinganishwa nk Ni sehemu ya chanzo cha kufanya sasa ni asili ya kwamba graph 1-1 nafasi inaonyesha Q, chanzo cha kufanya sasa wa kuamua, q pia aliamua.
antenna kwamba kufanya wataamua chanzo cha kufanya sasa wa juu ya yote, tu deflection ya chanzo cha kufanya sasa ni ya foregone, uwezo hufanya antenna ya kipenyo tofauti na F tofauti / D, na chanzo cha kufanya sasa ya haki ni alifanya baada ya haipaswi kufanya antenna nzuri, kwa sababu kuja hivyo athari ya bora sana inaccessible, kizazi uhakika ni kama hali ya graph 1-2 au mchoro 1-3. hali ya graph 1-2 wanaweza kufanya ardhi clutter catoptric inaingia chanzo cha kufanya sasa ya, na microwave ya ukingo angani na wimbi diffraction pia wanaweza kuingia chanzo cha kufanya sasa ya, kufanya fujo barua ya sauti kwamba angani inapata mfumo ni ikilinganishwa kupunguza. hali ya graph 1-3 wanaweza kufanya kiwango cha matumizi ya angani hupunguza taka kwamba inajenga mtu kuwa na ya ishara na valve pia aliingia chanzo cha kufanya sasa wa wakati huo huo. uhusiano wa F / D na Q ni: F / D = 1 / 4 * Ctg Q / 2.
antenna kwamba hivyo kwanza deflection ya chanzo cha kufanya sasa wa hufanya ngapi mduara kulingana na unataka tena anaamua F = D * baada ya kuwa (1 / 4 * Ctg Q / 2), ijayo kulingana na equation parabola: X Y = * Y / 4F wadogo anatoa mfano wa kuigwa.
caliber ya parabola antenna unaweza kutumia ijayo fomu hesabu:
deflection ya chanzo cha kufanya sasa wa (Q) | 100 digrii | 120 digrii | 160 digrii | 180 digrii |
ufanisi wa angani (K) | 70% | 60% | 55% | 50% |
Mkuu wa kiasi kwa nusu brace up mtoto chanzo cha kufanya sasa ya (reflector baada ya ukanda) deflection na chanzo cha hesi kufanya ya sasa ya ni digrii 100 au hivyo.
tafadhali Bonyeza hapa kupata antenna wetu dipole
bidhaa zetu nyingine:
Kifurushi cha Vifaa vya Kitaalam vya Kituo cha Redio cha FM
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Ingiza barua pepe kupata mshangao
es.fmuser.org
it.fmuser.org
fr.fmuser.org
de.fmuser.org
af.fmuser.org -> Kiafrikana
sq.fmuser.org -> Kialbeni
ar.fmuser.org -> Kiarabu
hy.fmuser.org -> Kiarmenia
az.fmuser.org -> Kiazabajani
eu.fmuser.org -> Kibasque
be.fmuser.org -> Kibelarusi
bg.fmuser.org -> Kibulgaria
ca.fmuser.org -> Kikatalani
zh-CN.fmuser.org -> Kichina (Kilichorahisishwa)
zh-TW.fmuser.org -> Wachina (Jadi)
hr.fmuser.org -> Kikroeshia
cs.fmuser.org -> Kicheki
da.fmuser.org -> Kidenmaki
nl.fmuser.org -> Kiholanzi
et.fmuser.org -> Kiestonia
tl.fmuser.org -> Kifilipino
fi.fmuser.org -> Kifini
fr.fmuser.org -> Kifaransa
gl.fmuser.org -> Kigalisia
ka.fmuser.org -> Kijojiajia
de.fmuser.org -> Kijerumani
el.fmuser.org -> Kiyunani
ht.fmuser.org -> Kikrioli cha Haiti
iw.fmuser.org -> Kiebrania
hi.fmuser.org -> Kihindi
hu.fmuser.org -> Kihungari
is.fmuser.org -> Kiaislandi
id.fmuser.org -> Kiindonesia
ga.fmuser.org -> Kiayalandi
it.fmuser.org -> Italia
ja.fmuser.org -> Kijapani
ko.fmuser.org -> Kikorea
lv.fmuser.org -> Kilatvia
lt.fmuser.org -> Kilithuania
mk.fmuser.org -> Kimasedonia
ms.fmuser.org -> Kimalesia
mt.fmuser.org -> Kimalta
no.fmuser.org -> Kinorwe
fa.fmuser.org -> Kiajemi
pl.fmuser.org -> Kipolishi
pt.fmuser.org -> Kireno
ro.fmuser.org -> Kiromania
ru.fmuser.org -> Kirusi
sr.fmuser.org -> Mserbia
sk.fmuser.org -> Kislovakia
sl.fmuser.org -> Kislovenia
es.fmuser.org -> Kihispania
sw.fmuser.org -> Kiswahili
sv.fmuser.org -> Kiswidi
th.fmuser.org -> Thai
tr.fmuser.org -> Kituruki
uk.fmuser.org -> Kiukreni
ur.fmuser.org -> Kiurdu
vi.fmuser.org -> Kivietinamu
cy.fmuser.org -> Kiwelsh
yi.fmuser.org -> Yiddish
FMUSER Wirless Kusambaza Video Na Sauti Ni Rahisi Zaidi!
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