Qhov ntau yam zoo ntawm ib qholub kav hlau txais xov microwavenyob ntawm nws qhov zaus band, qhov nce, thiab qhov xwm txheej ntawm daim ntawv thov. Hauv qab no yog kev faib tawm ntawm cov hom antenna feem ntau:
1. Kev Sib Txuas Lus Zaus thiab Ntau Yam
- E-band Antenna (60–90 GHz):
Cov kev sib txuas luv luv, muaj peev xwm siab (1–3 km) rau 5G backhaul thiab kev sib txuas lus tub rog. Kev txo qis ntawm huab cua ncav cuag 10 dB / km vim yog kev nqus pa oxygen. - Ka-band Kav hlau txais xov (26.5-40 GHz):
Cov kev sib txuas lus satellite ncav cuag 10–50 km (hauv av mus rau LEO) nrog 40+ dBi nce. Cov nag poob tuaj yeem txo qhov deb li ntawm 30%. - 2.60–3.95 GHzLub Antenna:
Kev them nqi nruab nrab (5–20 km) rau radar thiab IoT, sib npaug ntawm kev nkag mus thiab tus nqi ntawm cov ntaub ntawv.
2. Hom Antenna & Kev Ua Haujlwm
| Kav hlau txais xov | Qhov nce qib ib txwm muaj | Qhov Ntau Tshaj Plaws | Siv Cov Ntaub Ntawv |
|---|---|---|---|
| Antenna ob lub qhov (Biconical Antenna) | 2–6 dBi | <1 km (kev sim EMC) | Kev kuaj mob luv luv |
| Txuj Ci Nce Horn | 12–20 dBi | 3–10 km | Kev ntsuas/kev ntsuas |
| Microstrip Array | 15–25 dBi | 5–50 km | 5G chaw nres tsheb hauv paus / Satcom |
3. Cov Ntsiab Lus Tseem Ceeb ntawm Kev Xam Qhov Ntau
Tus qauv Friis kis tau kwv yees ntau yam (*d*):
d = (λ/4π) × √(P_t × G_t × G_r / P_r)
Qhov twg:
P_t = Lub zog xa (piv txwv li, 10W radar)
G_t, G_r = Tx/Rx antenna nce (piv txwv li, 20 dBi horn)
P_r = Qhov rhiab heev ntawm tus txais (piv txwv li, –90 dBm)
Lub Tswv Yim Siv Tau: Rau Ka-band satellite links, txuas lub horn high-gain (30+ dBi) nrog cov amplifiers suab nrov qis (NF <1 dB).
4. Kev Txwv Ib puag ncig
Kev Txo Nag Los: Cov teeb liab Ka-band poob 3–10 dB / km thaum muaj nag hnyav.
Kev Sib Ntsig ntawm Lub Teeb: Ib qho 25 dBi microstrip array ntawm 30 GHz muaj qhov dav ntawm 2.3 ° - tsim nyog rau kev sib txuas ntawm qhov taw tes mus rau qhov tseeb.
Xaus Lus: Qhov ntau thiab tsawg ntawm lub kav hlau txais xov microwave sib txawv ntawm <1 km (kev sim biconical EMC) mus rau 50+ km (Ka-band satcom). Ua kom zoo dua los ntawm kev xaiv E-/Ka-band antennas rau kev xa khoom lossis 2–4 GHz horns rau kev ntseeg tau.
Yog xav paub ntxiv txog antennas, thov mus saib:
Lub sijhawm tshaj tawm: Lub Yim Hli-08-2025
