Ibintu bifite ubushyuhe nyabwo hejuru ya zeru rwose bizamura ingufu. Ingano yingufu zikwirakwizwa mubisanzwe bigaragazwa nubushyuhe bungana nigituntu, ubusanzwe cyitwa ubushyuhe bwumucyo, bisobanurwa ngo:
Igituntu nubushyuhe bwumucyo (ubushyuhe buringaniye), ε nubusembwa, Tm nubushyuhe bwa molekile nyayo, kandi Γ nuburinganire bwa emissivité yubuso bujyanye na polarisiyasi yumuraba.
Kubera ko emissivité iri hagati [0,1], agaciro ntarengwa ubushyuhe bwumucyo bushobora kugeraho bungana nubushyuhe bwa molekile. Muri rusange, emissivité ni imikorere yinshuro ikora, polarisiyasi yingufu zasohotse, nuburyo imiterere ya molekile yikintu. Kuri frequence ya microwave, ibyuka bisanzwe byingufu nziza nubutaka hamwe nubushyuhe bungana na 300K, cyangwa ikirere cyerekezo cya zenith gifite ubushyuhe bungana na 5K, cyangwa ikirere cyerekezo gitambitse cya 100 ~ 150K.
Ubushyuhe bwumucyo butangwa numucyo utandukanye uhagarikwa na antene kandi igaragara kuriantennakurangiza muburyo bwa antenna. Ubushyuhe bugaragara kumpera ya antenne butangwa hashingiwe kumata yavuzwe haruguru nyuma yo gupima antene yunguka. Irashobora kugaragazwa nka:
TA ni ubushyuhe bwa antenne. Niba nta gihombo kidahuye kandi umurongo wohereza hagati ya antenne nuwakira nta gihombo ufite, imbaraga z urusaku zoherejwe kubakira ni:
Pr ni imbaraga za antenna urusaku, K ni Boltzmann ihoraho, na △ f ni umurongo mugari.
ishusho 1
Niba umurongo wohereza hagati ya antenne niyakira yakira, imbaraga zurusaku rwa antenne zabonetse mumata yavuzwe haruguru zigomba gukosorwa. Niba ubushyuhe nyabwo bwumurongo wogukwirakwiza ari kimwe na T0 hejuru yuburebure bwose, hamwe na coeffisente ya attenuation yumurongo woguhuza uhuza antenne niyakira ni ihoraho α, nkuko bigaragara ku gishushanyo cya 1. Muri iki gihe, ubushyuhe bwa antenne bukora neza aho bwakiriye ni:
Aho:
Ta ni ubushyuhe bwa antenne aho yakira, TA ni ubushyuhe bwurusaku rwa antenna kurwego rwa antenna, TAP nubushyuhe bwa antenna yubushyuhe bwumubiri, Tp nubushyuhe bwa antenne, eA nubushyuhe bwa antenne, naho T0 nubushyuhe bwumubiri bwumurongo wohereza.
Kubwibyo, imbaraga za urusaku rwa antenne zigomba gukosorwa kuri:
Niba uwakiriye ubwayo afite ubushyuhe bwurusaku T, sisitemu yurusaku rwimbaraga kumpera yakira ni:
Ps ni sisitemu y urusaku rwimbaraga (aho yakiriye impera yanyuma), Ta nubushyuhe bwurusaku rwa antenne (aho bakirira impera yanyuma), Tr nubushyuhe bwurusaku rwakirwa (kumpera yanyuma yakira), naho Ts ni sisitemu yubushyuhe bwurusaku (aho bakirira).
Igishushanyo 1 kirerekana isano iri hagati y'ibipimo byose. Sisitemu yubushyuhe bwurusaku Ts ya antenne hamwe niyakira ya sisitemu yubumenyi bwikirere ya radiyo kuva kuri K bike kugeza ku bihumbi K (agaciro gasanzwe ni nka 10K), itandukana nubwoko bwa antene niyakira hamwe ninshuro ikora. Imihindagurikire yubushyuhe bwa antenne aho amaherezo ya antenne aterwa nihinduka ryimirasire yintego irashobora kuba ntoya nka kimwe cya cumi cya K.
Ubushyuhe bwa antenne kuri antenne yinjiza hamwe niyakirwa ryanyuma rishobora gutandukana na dogere nyinshi. Uburebure bugufi cyangwa gutakaza-gutakaza umurongo birashobora kugabanya cyane itandukaniro ryubushyuhe kugeza kuri gito nka kimwe cya cumi cya dogere.
RF MISOni uruganda-tekinoroji rwinzobere muri R&D naumusaruroya antene n'ibikoresho by'itumanaho. Twiyemeje R&D, guhanga udushya, gushushanya, gukora no kugurisha antene n'ibikoresho by'itumanaho. Itsinda ryacu rigizwe nabaganga, shobuja, injeniyeri mukuru n'abakozi b'imbere bafite ubuhanga, bafite urufatiro rukomeye rw'umwuga kandi bafite uburambe bufatika. Ibicuruzwa byacu bikoreshwa cyane mubucuruzi butandukanye, mubigeragezo, sisitemu yo kugerageza nibindi bikorwa byinshi. Saba ibicuruzwa byinshi bya antenne nibikorwa byiza ：
RM-BDHA26-139 (2-6GHz)
RM-LPA054-7 (0.5-4GHz)
RM-MPA1725-9 (1.7-2.5GHz)
Kugira ngo umenye byinshi kuri antene, nyamuneka sura:
Igihe cyo kohereza: Jun-21-2024
