Nkhani

Ukadaulo wa Microwave wa Sichuan Keenlion——Chosakaniza

Ukadaulo wa Microwave wa Sichuan Keenlion womwe unayamba mu 2004, Sichuan Keenlion Mircrowave techenology CO., Ltd. ndiye wopanga wamkulu wa zida za Passive Mircrowave ku Sichuan Chengdu, China.

Timapereka zida za mirrowave zogwira ntchito bwino komanso ntchito zina zokhudzana ndi ntchito za microwave kunyumba ndi kunja. Zogulitsazi ndizotsika mtengo, kuphatikizapo zida zosiyanasiyana zogawa mphamvu, zolumikizira zolunjika, zosefera, zophatikiza, zoduplex, zida zosinthira zamagetsi, zosungunulira ndi zozungulira. Zogulitsa zathu zimapangidwa mwapadera kuti zigwirizane ndi malo osiyanasiyana otentha kwambiri. Mafotokozedwe amatha kupangidwa malinga ndi zosowa za makasitomala ndipo amagwiritsidwa ntchito pa ma frequency band onse omwe ali ndi ma bandwidth osiyanasiyana kuyambira DC mpaka 50GHz.

Chosakaniza

Mu dongosolo lolumikizirana la mafoni opanda zingwe, ntchito yayikulu ya combiner ndikuphatikiza zizindikiro za multiband ndikuzitulutsa ku dongosolo lomwelo logawa mkati.

Mu ntchito ya uinjiniya, maukonde a 800MHz C, maukonde a 900MHz G kapena ma frequency ena osiyanasiyana ayenera kutulutsidwa nthawi imodzi. Pogwiritsa ntchito chophatikiza, makina ogawa mkati amatha kugwira ntchito mu CDMA frequency band, GSM frequency band kapena ma frequency band ena nthawi imodzi.

Mwachitsanzo, mu dongosolo la ma antenna a wailesi, zizindikiro zolowera ndi zotulutsa za magulu angapo osiyanasiyana a ma frequency (monga 145mhz ndi 435mhz) zimaphatikizidwa kudzera mu chophatikiza, kenako zimalumikizidwa ndi siteshoni ya wailesi ndi chodyetsa, chomwe sichimangopulumutsa chodyetsa chokha, komanso chimapewa mavuto osintha ma antenna osiyanasiyana.

 

 

Emphamvu

Mu ntchito zaukadaulo, ndikofunikira kuphatikiza netiweki ya 800MHz C ndi netiweki ya 900MHz G. Pogwiritsa ntchito chophatikiza, gulu la makina ogawa mkati limatha kugwira ntchito mu gulu la CDMA ndi gulu la GSM nthawi imodzi. Mwachitsanzo china, mu dongosolo la ma antenna a wailesi, zizindikiro zolowera ndi zotulutsa za magulu osiyanasiyana osiyanasiyana a pafupipafupi (monga 145mhz ndi 435mhz) zimaphatikizidwa kudzera mu chophatikiza, kenako zimalumikizidwa ndi siteshoni ya wailesi ndi chodyetsa, chomwe sichimangopulumutsa chodyetsa, komanso chimapewa mavuto osintha ma antenna osiyanasiyana..

 

Kufotokozera mfundo zazikulu zofananira

Chophatikiza nthawi zambiri chimagwiritsidwa ntchito kumapeto kwa chotumizira. Ntchito yake ndikuphatikiza zizindikiro ziwiri kapena zingapo za RF zomwe zimatumizidwa kuchokera ku zotumizira zosiyanasiyana kukhala chimodzi ndikuzitumiza ku zida za RF zomwe zimatumizidwa ndi antenna, pomwe zimapewa kuyanjana pakati pa zizindikiro za doko lililonse.

Zophatikiza nthawi zambiri zimakhala ndi ma doko awiri kapena angapo olowera ndi doko limodzi lokha lotulutsira. Kupatula madoko ndi chizindikiro chofunikira pofotokoza kuthekera kwa ma siginecha awiri kuti asakhudze wina ndi mnzake. Nthawi zambiri amafunika kupitirira 20dB.

Chophatikiza cha 3dB bridge chili ndi ma doko awiri olowera ndi ma doko awiri otulutsira, monga momwe zasonyezedwera pa Chithunzi 2. Chimagwiritsidwa ntchito nthawi zambiri popanga ma frequency awiri opanda zingwe ndikuwapatsa mu antenna kapena system yogawa. Ngati doko limodzi lokha la kutulutsa likugwiritsidwa ntchito, doko lina lotulutsa liyenera kulumikizidwa ku load ya 50W. Pakadali pano, pamakhala kutayika kwa 3dB chizindikiro chikaphatikizidwa. Nthawi zina ma doko onse awiri otulutsira amafunika kugwiritsidwa ntchito, kotero palibe kutayika kwa load ndi 3dB.

Phatikizani kulandira ndi kutumiza kwa foni yam'manja ya chizindikiro ndi antenna imodzi. Mu dongosolo la GSM, chifukwa chotumizira siili mu nthawi yofanana, foni yam'manja ikhoza kusiya duplexer kuti ichotse chotumizira, ndikugwiritsa ntchito chophatikiza chosavuta cha transceiver kuphatikiza zizindikiro zotumizira ndi kulandira mu antenna imodzi popanda kusokonezana.

Pa dera lolandira, antenna imalandira chizindikirocho, imalowa mu njira yolandirira kudzera mu chophatikiza, imasakanikirana ndi chizindikiro cha oscillator chapafupi cholandirira (monga chizindikiro cha VCO cholandirira chopangidwa ndi frequency synthesizer), imasintha chizindikiro cha high-frequency kukhala chizindikiro chapakati cha frequency, kenako quadrature imachotsa chizindikirocho kuti ipange zizindikiro za I ndi Q zolandirira; Kenako GMSK (Gaussian filter minimum frequency shift keying) demodulation imachitika kuti isinthe chizindikiro cha analog kukhala chizindikiro cha digito, kenako imatumizidwa ku baseband processing unit.

Pa dera lotumizira mauthenga, gawo la baseband limatumiza deta ya TDMA frame (yomwe ili ndi liwiro la 270.833kbit / s) kuti ipange ma signal a transmission I ndi Q, omwe amatumizidwa ku transmission up converter kuti isinthe kupita ku transmission frequency band. Pambuyo pokulitsa mphamvu, transmitter imatumiza kudzera mu antenna.

Kapangidwe ka ma frequency synthesizer kamapereka chizindikiro cha oscillator chapafupi chomwe chikufunika kuti ma frequency asinthidwe pa chipangizo chotumizira ndi kulandira, ndipo chimagwiritsa ntchito ukadaulo wa phase-locked loop kuti chikhazikitse ma frequency. Chimapeza ma frequency reference kuchokera ku clock reference circuit.

Dongosolo lowunikira wotchi nthawi zambiri limakhala ndi wotchi ya 13mhz. Kumbali imodzi, limapereka mawonekedwe a wotchi a dera lopangira ma frequency synthesis ndi wotchi yogwirira ntchito ya dera lowongolera.

Gulu lalikulu

Chophatikiza ma frequency awiri

① JCDUP-8019

Chophatikiza ma frequency awiri cha GSM ndi 3G ndi chipangizo chokhala ndi ma in awiri ndi chimodzi. Chizindikiro cha GSM (885-960mhz) chikhoza kuphatikizidwa ndi chizindikiro cha 3G (1920-2170MHz).

② JCDUP-8028

Chophatikiza ma frequency awiri cha DCS ndi 3G ndi chipangizo chomwe chimagwiritsa ntchito ma frequency awiri mkati ndi kunja kwa chimodzi. Chizindikiro cha DCS (1710-1880mhz) chikhoza kuphatikizidwa ndi chizindikiro cha 3G (1920-2170MHz).

③ JCDUP-8026B

Chophatikiza ma frequency awiri (TETRA / iden / CDMA / GSM) ndi (DCS / PHS / 3G / WLAN) ndi chipangizo cholumikizira ma frequency awiri chomwe chimagwira ntchito ziwiri ndi chimodzi. Doko limodzi limaphimba tetra / iden, CDMA ndi GSM system frequency band (800-960MHz), ndipo limatha kulowetsa tetra / iden, CDMA, GSM kapena kuphatikiza kulikonse; Doko lina limaphimba ma frequency band a DCS, PHS, 3G ndi WLAN system (1710-2500mhz), ndipo limatha kulowetsa DCS, PHS, 3G, WLAN kapena kuphatikiza kulikonse kwa iwo.

④ JCDUP-8022

(CDMA / GSM / DCS / 3G) & WLAN dual frequency combiner ndi chipangizo chokhala ndi ma in awiri ndi chimodzi. Doko limodzi limaphimba CDMA, GSM, DCS ndi 3G system frequency band (824-960 / 1710-2170mhz), ndipo limatha kulowetsa CDMA, GSM, DCS, 3G kapena kuphatikiza kulikonse; Doko lina limaphimba WLAN system frequency band (2400-2500mhz) ndipo limatha kulowetsa zizindikiro za WLAN system.

Chophatikiza ma frequency atatu

① JCDUP-8024 / JCDUP-8024B

Chophatikiza ma frequency atatu cha GSM & DCS & 3G ndi chipangizo chokhala ndi ma three in ndi one out. Zizindikiro za GSM (885-960mhz), DCS (1710-1880mhz) ndi 3G (1920-2170MHz) zitha kuphatikizidwa.

② JCDUP-8018

Chophatikiza ma frequency atatu cha GSM & 3G & WLAN ndi chipangizo chokhala ndi ma three in ndi one out. Zizindikiro za GSM (885-960mhz), 3G (1920-2170MHz) ndi WLAN (2400-2500mhz) zitha kuphatikizidwa.

Chophatikiza ma frequency anayi

① JCDUP-8031

Chophatikiza ma frequency anayi cha GSM & DCS & 3G & WLAN ndi chipangizo chokhala ndi ma frequency anayi chomwe chimapangidwa ndi ma frequency anayi. Ma frequency anayi a GSM (885-960mhz), DCS (1710-1880mhz), 3G (1920-2170MHz) ndi WLAN (2400-2483.5mhz) amatha kuphatikizidwa.

Kuphatikiza apo, pogwiritsira ntchito chophatikiza, ziyenera kudziwika kuti njira yoperekera chizindikiro cha siteshoni yoyambira kapena chobwerezabwereza ndi yopanda zingwe, ndipo gwero lake ndi la wide spectrum. Chifukwa chake, passband yopapatiza nthawi zina imafunika kuti chizindikirocho chikhale choyera; Njira yoperekera chizindikiro cha chophatikiza ndi chingwe, ndipo chizindikirocho chimatengedwa mwachindunji kuchokera ku gwero, lomwe ndi chizindikiro chopapatiza. Mwachitsanzo, njira ya CDMA / GSM ya chophatikiza jcdup-8026b ili ndi mulifupi wa njira ya 800-960MHz. Mukapeza chizindikiro cha pafupipafupi cha chonyamulira cha GSM, chifukwa gwero ndi chizindikiro cha pafupipafupi cha chonyamulira, njira yoperekera chakudya ndi chingwe, ndipo pali chizindikiro cha pafupipafupi cha chonyamulira chokhacho mu njira popanda zizindikiro zina zosokoneza. Chifukwa chake, kapangidwe ka njira yayikulu ya chophatikiza ndikotheka pakugwiritsa ntchito moyenera.

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