arụmọrụ antenna GPS

arụmọrụ antenna GPS

Anyị maara na onye na-achọ GPS bụ ọdụ maka idobe ma ọ bụ ịnyagharị site na ịnweta akara satịlaịtị.N'ime usoro ịnata akara, a ga-eji antenna mee ihe, yabụ anyị na-akpọ antenna na-enweta mgbaama ahụ antenna GPS.A na-ekewa akara satịlaịtị GPS na L1 na L2, yana ugboro 1575.42MHZ na 1228MHZ n'otu n'otu, n'ime nke L1 bụ mgbaama obodo mepere emepe nwere polarization okirikiri.Ike mgbama bụ ihe dịka 166-DBM, nke bụ mgbama na-adịghị ike.Njirimara ndị a na-ekpebi na ekwesịrị ịkwado antennas pụrụ iche maka nnabata nke akara GPS.

1. Ceramic mpempe akwụkwọ: Ogo nke seramiiki ntụ ntụ na usoro nkwụsịtụ na-emetụta ọrụ ya ozugbo.Ibé akwụkwọ seramiiki a na-eji ugbu a n'ahịa bụ 25 × 25, 18 × 18, 15 × 15 na 12 × 12.Ebe dị ukwuu nke mpempe akwụkwọ seramiiki, nke ukwuu na-agbanwe agbanwe dielectric, nke na-eme ka ụda resonance dị elu, na mmetụta nke nnabata ka mma.Ọtụtụ n'ime seramiiki iberibe bụ nke square imewe, iji hụ na resonance na XY direction bụ ihu ọma otu, ka nweta mmetụta nke edo kpakpando collection.

2. Silver oyi akwa: Ọlaọcha oyi akwa n'elu nke seramiiki antenna nwere ike imetụta ugboro resonant nke antenna.Ebe kachasị mma nke mgbawa seramiiki GPS dabara na 1575.42MHz, mana mpaghara gbara ya gburugburu na-emetụta ugboro ugboro nke antenna n'ụzọ dị mfe, ọkachasị mgbe a na-agbakọta ya na igwe dum, a ga-edozigharị ugboro ugboro ka ọ nọrọ na ya. 1575.42MHz site n'ịgbanwe ọdịdị nke mkpuchi elu ọlaọcha..Ya mere, ndị na-emepụta igwe GPS zuru oke ga-akwadorịrị ndị na-emepụta antenna mgbe ha na-azụta antenna ma nye ihe nlele igwe zuru oke maka nnwale.

3. Ebe nri: antenna seramiiki na-anakọta mgbaàmà resonance site na ebe nri ma ziga ya na njedebe azụ.N'ihi nkwekọ nke antenna ahụ, ebe nri anaghị adị n'etiti etiti antenna, mana gbanwetụrụ ntakịrị na ntụzịaka XY.Usoro nkwekọ dị otú ahụ dị mfe ma ọ dịghị agbakwunye ọnụ ahịa.Ịkwaga naanị n'otu axis ka a na-akpọ antenna single-bias, na ịkwaga na axes abụọ a ka a na-akpọ okpukpu abụọ.

4. Mgbasa sekit: ọdịdị na mpaghara PCB na-ebu antenna seramiiki.N'ihi njirimara GPS nlọghachi, mgbe ndabere bụ 7cm × 7cm

Eriri GPS nwere parampat anọ dị mkpa: uru (enweta), ebili mmiri na-eguzo (VSWR), ụda mkpọtụ (ọnụọgụ mkpọtụ), oke axial (Axial ratio).N'ime ha, a na-emesi usoro axial ike karịsịa, nke bụ ihe ngosi dị mkpa iji tụọ ọdịiche nke uru mgbaàmà nke igwe dum na ntụziaka dị iche iche.Ebe ọ bụ na a na-ekesa satịlaịtị na-enweghị usoro na mbara igwe hemispherical, ọ dị ezigbo mkpa iji hụ na antennas nwere mmetụta yiri nke ahụ n'akụkụ niile.Axial ratio na-emetụta arụmọrụ antenna, ọdịdị ọdịdị, sekit dị n'ime na EMI nke igwe dum.