Hauv kev siv cov khoom siv hluav taws xob electromagnetic, RF antennas thiab microwave antennas feem ntau tsis meej pem, tab sis qhov tseeb muaj qhov sib txawv tseem ceeb. Tsab xov xwm no ua kev tshuaj xyuas kev tshaj lij los ntawm peb qhov ntev: kev txhais cov zaus band, txoj cai tsim, thiab cov txheej txheem tsim khoom, tshwj xeeb tshaj yog kev sib txuas cov thev naus laus zis tseem ceeb xws likev siv lub tshuab nqus tsev.
RF MISOLub Tshuab Nqus Tsev Brazing
1. Qhov ntau thiab tsawg ntawm cov zaus thiab cov yam ntxwv ntawm lub cev
Kav hlau txais xov RF:
Lub zaus ua haujlwm yog 300 kHz - 300 GHz, npog kev tshaj tawm nthwv dej nruab nrab (535-1605 kHz) mus rau millimeter nthwv dej (30-300 GHz), tab sis cov ntawv thov tseem ceeb yog tsom mus rau <6 GHz (xws li 4G LTE, WiFi 6). Lub wavelength ntev dua (centimeter mus rau 'meter'), cov qauv yog feem ntau dipole thiab whip antenna, thiab qhov rhiab heev rau kev kam rau siab yog qis (± 1% wavelength yog txais tau).
Lub kav hlau txais xov microwave:
Tshwj xeeb tshaj yog 1 GHz - 300 GHz (microwave rau millimeter nthwv dej), cov zaus siv feem ntau xws li X-band (8-12 GHz) thiab Ka-band (26.5-40 GHz). Cov kev cai ntawm wavelength luv (theem millimeter):
✅ Kev ua tiav qib submillimeter (kev kam rau siab ≤ ± 0.01λ)
✅ Kev tswj qhov roughness ntawm qhov chaw (< 3μm Ra)
✅ Cov khoom siv dielectric qis-poob (ε r ≤2.2, tanδ≤0.001)
2. Lub ntsiab lus ntawm kev siv tshuab tsim khoom
Kev ua tau zoo ntawm microwave antennas yog nyob ntawm kev siv tshuab tsim khoom siab heev:
| Kev Siv Tshuab | RF Kav hlau txais xov | Lub Kav hlau txais xov microwave |
| Kev siv tshuab txuas | Kev Siv Hlau/Kev Txuas Ntsia Hlau | Nqus plua plav Brazed |
| Cov Neeg Muag Khoom Ib Txwm Muaj | Lub Hoobkas Hluav Taws Xob Dav Dav | Cov Tuam Txhab Brazing zoo li Solar Atmospheres |
| Cov kev cai vuam | Kev sib txuas ua ke | Tsis muaj pa oxygen nkag mus, kev hloov kho cov qauv noob |
| Cov Ntsuas Tseem Ceeb | Kev tiv thaiv ntawm <50mΩ | Kev sib piv ntawm cov coefficient ntawm kev nthuav dav ntawm thermal (ΔCTE <1ppm / ℃) |
Tus nqi tseem ceeb ntawm kev siv lub tshuab nqus tsev hauv microwave antennas:
1. Kev sib txuas tsis muaj oxidation: brazing hauv 10 -5 Torr qhov chaw nqus tsev kom tsis txhob oxidation ntawm Cu / Al alloys thiab tswj kev conductivity > 98% IACS
2. Kev tshem tawm kev ntxhov siab thermal: cua sov gradient mus rau saum cov kua ntawm cov khoom siv brazing (piv txwv li BAISi-4 alloy, kua 575 ℃) kom tshem tawm cov microcracks
3. Kev tswj kev hloov pauv: kev hloov pauv tag nrho <0.1mm / m kom ntseeg tau tias millimeter nthwv dej theem sib xws
3. Kev sib piv ntawm kev ua haujlwm hluav taws xob thiab cov xwm txheej ntawm daim ntawv thov
Cov yam ntxwv ntawm kev tawg:
1.RF kav hlau txais xov: feem ntau yog omnidirectional hluav taws xob, nce ≤10 dBi
2.Lub kav hlau txais xov microwave: kev taw qhia siab heev (qhov dav ntawm lub teeb 1 ° -10 °), nce 15-50 dBi
Cov ntawv thov ib txwm muaj:
| RF Kav hlau txais xov | Lub Kav hlau txais xov microwave |
| Lub pej thuam xov tooj cua FM | Cov Cheebtsam Phased Array Radar T/R |
| Cov Sensors IoT | Kev sib txuas lus satellite |
| Cov Cim Npe RFID | 5G mmWave AAU |
4. Qhov sib txawv ntawm kev kuaj xyuas qhov tseeb
Kav hlau txais xov RF:
- Tsom: Kev sib phim impedance (VSWR < 2.0)
- Txoj Kev: Vector network analyzer zaus cheb
Lub kav hlau txais xov microwave:
- Tsom xam: Tus qauv hluav taws xob/kev sib xws ntawm theem
- Txoj Kev: Kev luam theej ze ntawm thaj chaw (qhov tseeb λ / 50), kev sim thaj chaw me me
Xaus Lus: RF antennas yog lub hauv paus ntawm kev sib txuas wireless dav dav, thaum microwave antennas yog lub hauv paus ntawm cov kab ke siab thiab siab. Qhov dej ntws ntawm ob qho yog:
1. Qhov nce ntawm zaus ua rau lub wavelength luv dua, ua rau muaj kev hloov pauv paradigm hauv kev tsim qauv
2. Kev hloov pauv ntawm cov txheej txheem tsim khoom - cov kav hlau txais xov microwave vam khom cov thev naus laus zis tshiab xws li lub tshuab nqus tsev kom ntseeg tau tias muaj kev ua tau zoo
3. Qhov nyuaj ntawm kev xeem loj hlob sai heev
Cov kev daws teeb meem nqus tsev uas muab los ntawm cov tuam txhab ua haujlwm xws li Solar Atmospheres tau dhau los ua qhov lav tseem ceeb rau kev ntseeg siab ntawm cov kab ke millimeter wave. Thaum 6G nthuav dav mus rau terahertz frequency band, qhov tseem ceeb ntawm cov txheej txheem no yuav pom tseeb dua.
Yog xav paub ntxiv txog antennas, thov mus saib:
Lub sijhawm tshaj tawm: Tsib Hlis-30-2025
