RFID hpe garan ginhka ai lam

RFID antenna gaw RFID system a ahkyak ai daw langai rai nna, dai gaw circuit hte space lapran na interface device langai mi re. Dai gaw lam madun ai wave hte manu jahpu n jaw ra ai lamu ga n-gun hpe galai shai na matu window langai mi re. RFID antenna amyu myu nga ai, dai ni hpe n bung ai frequency, yaw shada lam, aten, ra kadawn ai lam ni hte kaga masa ni hta jai lang mai ai.

RFID antenna ni hpe garan ginhka ai lam
RFID antenna ni hpe RFID tag antenna hte RFID hti ai/ka ai antenna ni hku nna garan mai ai, dai hpe shanhte a lam madun ai lam hpe madung tawn nna, shara shagu na antenna ni hte lam madun ai antenna ni hku nna grau nna garan mai ai; N bung ai nsam ni hte maren, linear antenna hte planar antenna ni hku nna mung garan mai ai, etc; Antenna ni a hkrang shapraw ai lam hte maren, madung hkrang masum nga ai: coil amyu, microstrip patch amyu, hte dippele amyu.

N law htum hte n-gun kaba ai RFID gaw coil antenna ni hpe madung lang nna, law malawng gaw magri wire hpe lang ai. Dai coil antenna gaw magri wire hpe plane langai mi hta shinggrup da ai (sh) magnetic core hpe shinggrup da ai. Strict hku tsun ga nga yang, ndai zawn re ai coil hpe antenna ngu n mai sawn la ai, raitim, teng sha nga yang, coil mutual inductance effect rai nna, asan sha galaw ai lam nga ai. Coil a ginra gaw chye na hkap la ai tsan ai shara hte seng ai. Dai majaw, n-gun kaba ai frequency ni hta lang ai frequency law ai majaw, circle ni a jahpan gaw, n-gun n law ai frequency ni hta grau n law ai majaw, n-gun n law ai frequency ni hta hkala nba byin ai, dai gaw, RFID antenna hpe asan sha, manu n hkrat ai, n-gun kaba ai frequency ni hta byin shangun ai.

ultra-high frequency RFID hta lang ai antenna ni gaw antenna ni rai nna, lang ai etching galaw ai lam law law nga ai, dai hta copper etching antenna ni hte aluminum etching annas ni lawm ai. Ladat ni mung grai kungkyang ai, antenna ni gaw electronic tags ni hte laika hti ai ni a matu ultra-high frequency RFID hta ra ai. Electronic tags ni hta antenna hpe gaw, n-gun ja ai impedance hte shingdaw ra ai, dai hpe tag chip hku nna dawdan ai, chip langai hte langai a yak hkak ai impedance gaw n bung ai. Dai majaw, antenna line type gaw yawng hpe n mai byin ai, chip nnan langai mi hpe bai gram lajang ra ai antenna ra ai. Ultra-high frequency tag antenna amyu myu nga ai, law malawng lang ai ni gaw dippele antenna ni rai nga ai. Dipole antenna ni hpe dingyang line langai mi hta lajang da ai n-gun hte galu kaba ai wire lahkawng hte hpawng de da nna, signal hpe lapran daw lahkawng kaw na jaw ai. Antenna a galu kaba ai lam gaw frequency range hpe dawdan ya ai. Dipole antenna ni gaw kaja ai radiation n-gun, asan sha re ai hkrang masa, hte n-gun ja ai lam ni a akyu ni nga ai; Dai ultra-high frequency hti ai antenna gaw madung hku nna plate hkrang bung ai antenna ni hte hpawng de da ai, dai hta n-ga, rod hkrang antenna hte{11}}field antenna ni a makau kaw na antenna ni hta mung lawm ai. ultra-high frequency RFID hta, antenna gaw laika hti ai shara a matu ahkyak ai dawdan lam langai mi rai nna, radiation range hte direction hpe antenna hku nna tsep kawp dawdan da ai.

Microstrip patch antenna ni gaw, n-gun n law ai, n-gun n law ai, asan sha galaw ai, arai ni hte loi ai hku htuk manu ai, wan n-gun amyu myu nga ai. Dai ni gaw, n-gun n-gun n-gun n-gun n-gun n-gun ni hte matut mahkai da ai radiation patch conductor ni hte hpawng de da ai. Antenna a radiation arawn alai ni hpe madung tawn nna, patch conductor ni hpe hkrang amyu myu hku nna galaw mai ai. Microstrip patch antenna gaw jahtum e rectangle lawm ai circuit board langai mi lawm nna, rectangle a galu kaba ai lam hte galu kaba ai lam gaw frequency range hpe dawdan ya ai.

RFID antenna a hpaji masa ni
RFID hti ai antenna a madung hpaji masa ni hta, frequency band, akyu, tsap nga ai wave, shawng kaw nna hpang de shingdaw ai lam, nhtoi htoi tu ai lam, polarization maga de lawm ai lam ni lawm ai; RFID tag antenna a hpaji masa ni hta madung hku nna frequency band, ga law ai, polarization maga, tsap nga ai wave, lam madun ai ladat, etc.

1. Garan hta shang lawm ai.
Gain coefficient ngu ai gaw, antenna a n-gun galai shai ai lam hte lam madun ai atsam ningja ni hpe tup hkrak shadawn ai parameter langai rai nga ai. Dai gaw, lam madun ai coefficient hte antenna atsam a akyu re. Antenna directional coefficients ni yawng grau law wa yang, gain coefficient grau law wa ai.

2. Mung masa lam
Polarization arawn alai ngu ai gaw, antenna langai a radiation maga de wan n-gun field vector a maga de na aten ladaw shai hkat ai lam hpe tsun mayu ai. Polarization lam gaw antenna a wan n-gun n-gun hpe madun ai lam rai nna, antenna a polarization ladat ni gaw linear polarization (hpyen n-gun n-gun n-gun n-rawng ai hte dingyang n-gup n-gu n-gun n-rawng ai) hte grup yin garan ginhka ai lam (left{1}}} n-gup n-gu n-gun n-rawng ai hte hkra maga de- n-gup magap) ni lawm ai.

Madung hku tsun ga nga yang, 1m hta n-pu na chye na ai tsan ai shara hte, n-gun n law ai wa a{0}} n-gun n law ai hte, manu n law ai coil type antenna ni hpe lang ai; Dipole hte microstrip patch antenna ni hpe ultra- hta lang ai 1m jan ai ultra- kaw nna lang ai ladat ni hta lang ai.