Ụkpụrụ nke antenna nkwurịta okwu na ngwa,
kedu ka esi enweta ma bufee mgbaama maka ihe nkwugharị mgbama 3g/4g?
Weebụsaịtị:https://www.lintratek.com/
Nke mbụ, ụkpụrụ antenna:
1.1 Nkọwa nke antenna:
Ngwaọrụ nwere ike ịgbanye ebili mmiri electromagnetic gaa n'otu ebe dị na mbara igwe ma ọ bụ nwee ike nweta ebili mmiri electromagnetic nke ọma site na ntụzịaka dị na mbara igwe.
1.2 Ọrụ antenna:
Ø Ntughari ike - ntụgharị nke ebili mmiri na-eduzi na ohere ohere efu; radieshon ntụziaka (nnabata) - nwere ụfọdụ ntụziaka.
1.3 ụkpụrụ radieshon Antenna:
1.4 Paramita antenna
Oke radieshon
Ø Ọkara obosara ike ọkụ, oke n'ihu ruo azụ;
Ø ọnọdụ polarization, ịkpa oke polarization cross;
Ø Ihe ntụzịaka, uru antenna;
Ø Main lobe, lobe secondary, sidelobe suppression, zero fill, beam downtilt…
Oke sekit
Voltage ebili mmiri ebili mmiri VSWR, ntụgharị ntụgharị Γ, nloghachi ọnwụ RL;
Ø Ntinye ntinye Zin, nkwụsị nnyefe TL;
Ø iche iche;
Ø Na-agafe agafe Intermodulation PIM3…
Antenna sidelobe
Obosara okirikiri kwụ ọtọ
N'ihu na azụ: Na-akọwapụta oke nke ike na-atụgharị na mpio yana ike na-enwu azụ n'ime ± 30°.
Mmekọrịta dị n'etiti uru na nha antenna na obosara
N'ịkwado " taya" ahụ, ka mgbama ahụ na-etinyekwu uche, ka uru ahụ dị elu, na-ebuwanye ibu nke antenna, na-adịwanye warara obosara;
Isi ihe ole na ole nke uru antenna:
antenna bụ ngwaọrụ na-agafe agafe na enweghị ike ịmepụta ike. Uru antenna bụ naanị ikike itinye uche nke ọma n'ike iji kpalite ma ọ bụ nata ebili mmiri electromagnetic n'otu akụkụ.
Ø A na-enweta uru nke antenna site n'ịdị elu nke ndị na-ama jijiji. Nke dị elu karịa uru, ogologo antenna ogologo. Welite uru site na 3dB wee jiri okpukpu abụọ mee ụda.
Uru nke antenna dị elu, ka ọ na-eduzi ya ka mma, ka ike na-etinyekwu uche, na lobe na-adịwanye warara.
1.5 Oke radieshon
Polarization: na-ezo aka trajectory ma ọ bụ mgbanwe nke ọkụ eletrik vector na mbara.
1.6 okirikiri okirikiri
Weghachite mfu
Abụọ, ngwaahịa antenna
2.1 Ụzọ ịkpọ aha antenna:
Antenna edemede: ODP (n'èzí n'ọnụ efere efere), OOA (n'èzí omnidirectional antenna), IXD (ime ụlọ uko ụlọ antenna), OCS (n'èzí bidirectional antenna), OCA (n'èzí ụyọkọ antenna), OYI (n'èzí na-atụba elu antenna), IWH (ime ụlọ mgbidi mounted antenna) na ndị ọzọ.
Ọkara ike n'akuku: 032,065,090,105,360 (base ọdụ antenna) 020,030,040,050,060,075,090,120,160,360 (na-emegharị antenna)
Ụdị polarization: R (polarization abụọ), V (otu polarization)
Uru: Uru kachasị bụ 21dbi dabere na uru ọ bara
Ụdị nkwonkwo: D (Din isi), N (ụdị isi), S (SMA isi), T (TNC isi) na na
Ugboro ugboro:
Koodu nkọwapụta: Akwụkwọ ozi Rome na-egosi ọgbọ nke ngwaahịa ahụ. Akwụkwọ ozi na ọnụọgụgụ ndị a na-egosi akụkụ mbelata, ọdịdị na ozi ndị ọzọ. Ụdị F; V ụkpụrụ eletrik; Igwe ọkụ eletrik RV dịpụrụ adịpụ
2.2 Base Station Antenna
Antenna Omnidirectional Antenna Dual-frequency Antenna
Antenna-Ugboro atọ
Antenna ụlọ
Antenna etinyere mgbidi
Yagi Antenna
Antenna Grid
Broadband Omnidirectional Antenna Log-periodic Antenna Plate Antenna
3.1 Ike nkesa
Ihe nkesa ike bụ ngwaọrụ na-ekewa ike nke otu mgbaama mmepụta n'ime ụzọ abụọ ma ọ bụ karịa. Ọ bụ n'ezie ihe ntụgharị impedance.
Ø Enwere ike gbanwee ike nkesa iji dochie ihe nchikota?
Mgbe ejiri ya dị ka synthesizer, ọ bụghị naanị na-achọ oke oke, oke ebili mmiri dị ala, ma na-elekwasị anya na ihe a chọrọ iji nagide ike dị elu. N'ịtụle na ọdụ ụgbọ mmiri mmepụta nke ike nkesa oghere a na-ejikarị eme ihe adịghị adabara, nnukwu ebili mmiri na-eguzo; N'ihi nkwụsị ike dị ala nke microstrip power splitter, anyị anaghị akwado iji ike nkewa iji dochie ihe nchịkọta.
Nkesa ike oghere
Anọ, mmeghe nke coupler
4.1 Njikọta
Ø Coupler bụ ụdị ihe dị iche iche nke na-ekesa ike nke mgbaàmà ntinye site na ọkụ eletrik na oghere magnet ka ọ bụrụ akụkụ nke njedebe njedebe, na ihe ndị ọzọ na-emepụta ihe na-emepụta iji mechaa nkesa ike.
Ø Ike nkesa nke di na nwunye anaghị ekewa nha nha. A makwaara dị ka ike sampler.
Njikọ ụzọ
A na-ejikarị ndị na-emekọ ihe na-eme ihe n'ụzọ a kapịrị ọnụ nke mgbaàmà microwave maka nlele, isi ihe kpatara ya bụ ikewapụ na ikewapụ mgbaàmà ahụ, ma ọ bụ na-ejikọta akara dị iche iche, na-enweghị ibu dị n'ime, ntụziaka ntụziaka na-abụkarị netwọk ọdụ ụgbọ mmiri anọ.
Njikọ oghere
Atụmatụ: Inwe ike dị elu, obere arụmọrụ efu.
Ihe kpatara ya:
1. Oghere ahụ jupụtara na ikuku, na n'ime usoro mgbasa ozi, mgbasa ozi mgbasa ozi nke ikuku ikuku na-eme ka ọ dị ntakịrị.
2. A na-ejikarị eriri waya jikọtara ya na onye na-eduzi eletrik nwere ezigbo ọkụ eletrik (dị ka ịkwanye ọlaọcha n'elu ọla kọpa), na ọnwụ onye nduzi bụ isi ihe na-adịghị mma.
3. Nnukwu oghere oghere, nkwụsị ọkụ ngwa ngwa. Nagide ike dị elu.
Attenuator
Ø The attenuator bụ ihe ngbanwe nke ọdụ ụgbọ mmiri abụọ
Ndị attenuators a na-ejikarị eme ihe bụ absorption attenuators.
A na-ejikarị attenuator coaxial eme ihe na injinia, nke nwere netwọk attenuation "π" ma ọ bụ "T".
Coaxial attenuators na-enwekarị ụdị abụọ nke attenuators na-agbanwe agbanwe.
Ø A na-ejikarị ndị na-eme ihe iji chịkwaa ike nnyefe nke akara ngwa ndakwa nri na sistemụ nchọpụta ma na-eri oke ike, si otú a na-agbatị oke nha nha nke mgbaàmà, dị ka mita ike, ndị na-enyocha ụdịdị, amplifiers, ndị na-anata, wdg.
Weebụsaịtị:https://www.lintratek.com/
#Ampilifaya 4g #4g ugboro ugboro
衰减器
Ø衰减器是二端口互易元件
Ø衰减器最常用的是吸收式衰减器.
Ø工程中通常使用的是同轴型衰减器，由“π”型或“T”型衰减网络组成。
Ø同轴衰减器通常有固定及可变衰减两种。
Ø衰减器主要用于检测系统中控制微波信号传输能量、消耗超额荽量，因而扩展信号测量的动态范围，诸如功率计，频谱分析仪，放大器，接收器等。
Oge nzipu: Jan-18-2024