Radio Frequency hpe chye na lu na matu (RFID) lang ai Antenna hpaji ni gaw hpa ni rai kun?

Radio Frequency hpe chye na lu na matu (RFID) lang ai Antenna hpaji ni gaw hpa ni rai kun?

 

Shaning law law wa anhte gaw hkrat sum ai lam latsa jan hpe hparan lai wa sai, marai shi hta na marai 9 daram gaw chip n kaja ai lam ni hta grau nna antenna manghkang ni hpe hkan tam ai. Kaja wa myit n pyaw hpa gaw, customers law malawng gaw chip datasheet ni hpe shingdaw yu na matu bat law law aten la nna, antenna design hpe lani mi lahkawng ya laman hta ngut kre hkra galaw lu ai.

RFID gaw frequency band mali hpe shinggrup da ai. Antenna physics gaw shan lahkawng a lapran grai shai hkat ai majaw, 125 kHz coil hpe 900 MHz dipole hte shingdaw yang, TV nsen shapoi ai tower hte transformer hpe shingdaw ai hte bung nga ai.

 

 

N-gun n law ai hte n-gun kaba ai-125 kHz hte 13.56 MHz- hta dai tag gaw laika hti ai antenna a makau na shara kaw dung nga ai. N-gun hpe coil lahkawng a lapran na magnetic flux matut mahkai lam hku nna htawt sit ai, transformer langai bungli galaw ai hte bung ai. Dai majaw anhte gaw "antenna" ngu nna tsep kawp n tsun ga ai-"coil" shing nrai "inductor" ngu ai gaw grau hkrak ai. LF gaw ferrite n-gang ni grup yin hta nbung magri wire hpe shinggrup da ai. Ferrite gaw magnetic n-gun grai ja ai ceramic rai nna, flux hpe kaji ai volume de shinggyin la lu ai. 13.56 MHz a matu, coil law malawng gaw PCB (sh) PET film ntsa hta ka da ai flat spiral ni rai nga ai-anhte a htingnu hta 0.07mm magri mang foil galu ai madang hpe masat da ai.

Band lahkawng yan a matu tatut galaw mai ai shadawn sharam gaw, kaja dik ai masa hta hti lu ai shara meter langai mi rai na re. Ga law malawng gaw n law ai.

 

860-960 MHz de du jang, game gaw tsep kawp galai mat sai. Dai wavelength gaw shayawm mat ai majaw, n-gun rawng ai antenna langai mi gaw, tsan ai shara de teng sha wan n-gun hpe shapoi ya lu ai. Dipole, meander-lines, patches-n-gun dat hkrang hte impedance arawn alai ni lawm ai tengman ai antenna hkrang ni gaw ahkyak ai.

 

915 MHz kaw na daw mi -wave dipole gaw tip kaw nna tip du hkra centimeter 16 daram hkawm ai. Meander-line hkrang ni gaw dai galu ai hpe shingdu de shingdu de shinggrup nna kaji ai label langai mi hta hkan nna galaw ai. Nang gaw bandwidth hpe n-gun n law ai a matu dut sha ai. Grau kaba ai bawnu machyi ai lam gaw impedance shingdaw ai lam re. UHF RFID chips ni gaw 20Ω grup yin na tengman ai daw hte yak hkak ai impedance hpe madun dan nna, chip model hta hkan nna -150 kaw nna -220Ω lapran na capacitive reactance hpe madun dan ai. Antenna gaw conjugate hpe jaw ra ai. Simulation software gaw ya aten hta ndai hpe hparan nga ai raitim, galaw shapraw ai hkam sharang ai lam hta kam mai ai shadawn shadang hpe lu la na matu gaw, bai galaw ra ai.

 

Metal ntsa kaw tag langai mi hpe bang dat ai hte rau, performance grai hkrat sum mat ai-ndai gaw UHF project ni hta grau sawng ai manghkang langai sha rai na re. Ground plane ni hte patch antenna ni gaw ndai hpe shinggrup nna bungli galaw ai raitim manu hte n-gun hpe jat ya ai.

 

2.45 GHz hte dai hta jan ai Microwave band ni gaw RFID a matu nga ai raitim, gumhpraw jahpu shaw ai lam hte aten tengman ai- shara masat masa ni a shinggan hta shadawn sharam sha jai lang ai hpe mu lu ai.

Hpaga lam hta n-gun rawng ai lam gaw bungli galaw ai deployment ni hpe field hkrat sum ai lam ni hte garan ginhka ya ai. Coil shinggrup ai n-gun gaw inductance hpe hkra machyi shangun ai. Etching galaw ai gaw, nsam hpe hkra machyi shangun ai. Screen printing galai shai ai lam ni gaw sheet hpe ninghkap ai lam hpe hkra machyi shangun ai. Chip bonding quality gaw aten galu-asak hkrung lam hpe hkra machyi shangun ai. Ndai lam ni hta na langai mi mung datasheet kaw n pru ai.

Frequency hpe lata ai shaloi, manghkang hte physics hpe shingdaw yu u. LF gaw tissue kata de shang nna metal makau kaw bungli galaw ai-dusat ni hpe chye ginhka ai lam gaw kaja ai lam a majaw dai ntsa e hkawm ai. HF gaw NFC hte gumhpraw bang na matu application ni hpe hparan ya ai. UHF gaw inventory hte logistics a matu range hte speed hpe jaw ya ai raitim grup yin masa ni hpe myit maju jung ra ai.

 

 

Datasheet range masat masa ni gaw kaja dik ai lab masa ni hpe sawn la ai-tag hpe hti ai wa hpe man tawn da ai, shara law law nga ai, n-gun n rawng ai. Project masing hpe teng sha galaw na matu, dai jahpan hpe lahkawng daw daw nna hpang u, dai hpang 20% ​​margin hpe ntsa kaw bai tawn da u. Lahta na lam yawng gaw lai wa sai shi matsat ning laman Jingzhou kaw anhte a tag hte reader production hpe galaw ai shaloi sharin la lu ai lam ni kaw na pru wa ai re-hpaji jaw ai lam ni hpe tsun jahta mayu ai rai yang, n-gun jaw mai ai.