vj5101w157gxcmt www.vishay.com vishay revision: 30-apr-13 1 document number: 45215 for technical questions, contact: chipantenna@vishay.com this document is subject to change without notice. the products described herein and this document are subject to specific disclaimers, set forth at www.vishay.com/doc?91000 surface mount ceramic chip antennas for 1.575 ghz vj5101w157gxcmt chip antenna the vj5101w157 series are small form-factor, high-performance chip-antennas optimized for gps applications. designed for gps applications, the vj5101w157gxcmt antenna shows a superb perfo rmance and excellent peak/ average gain, allowing longer ranges than similar gps patch antennas. description the vj5101w157gxcmt ceramic chip antenna is a small form-factor, high-performance, chip-antenna designed for operation at 1.575 ghz. it allo ws manufacturers to design high quality products that do no t bear the penalty of a large external antenna, and is design ed to be assembled onto a pc board using a standard reflow process. features ? small outline (10 mm x 3.2 mm x 0.8 mm) ? 50 ? unbalanced tuning interface ? linear polarization ? assembled onto a pcb in the standard reflow process ? wide transmit / receive range ? high stability in temperature / humidity changes ? excellent peak / average gain ? wide operating temperature ra nge (- 40 c to + 85 c) ? material categorization: for definitions of compliance please see www.vishay.com/doc?99912 applications ? gps l1 band ? transmission / reception at 1.575 ghz electrical specifications operating temperature: - 40 c to + 85 c frequency range (transmission / reception): 1575 mhz 50 mhz note ? electrical characteristics at + 25 c unless otherwise specified. ? quick reference data series frequency (mhz) max. gain (dbi) average gain (dbi) bandwidth (- 10 db) (mhz) bandwidth (- 3 db) (mhz) vj5101w157gxcmt 1575 + 2.5 - 1.60 50 110 chip antenna performance nominal ? frequency ? (mhz) nominal impedance ( ? ) 1.575 ghz peak gain (dbi) 1.575 gh z average gain (dbi) 1.575 gh z reflected power loss 1.575 gh z insertion power loss - 3 db bandwidth 1.575 gh z - 3 db reflected power loss - 10 db bandwidth 1.575 gh z - 10 db reflected power loss 1575 50 - 1.60 + 2.5 < - 15 db < 4 % 110 50 % 50 10 % < 3.2 % < 0.14 db 3 db 0.46 db
vj5101w157gxcmt www.vishay.com vishay revision: 30-apr-13 2 document number: 45215 for technical questions, contact: chipantenna@vishay.com this document is subject to change without notice. the products described herein and this document are subject to specific disclaimers, set forth at www.vishay.com/doc?91000 footprint, mechanical, and pcb dimensions the antenna footprint and mechanical dimensions are presented in figure 7. optimal tuning is adjusted according to pcb layout. layout design antenna on test board (thickness 0.8 mm) figure symbol dimension (mm) l 10 0.20 w 3.2 0.20 t 0.80 0.10 a 0.80 0.10 w = 3.2 mm 0.2 mm t = 0.8 mm 0.1 mm l = 10 mm 0.2 mm a = 0.8 mm 0.1 mm
vj5101w157gxcmt www.vishay.com vishay revision: 30-apr-13 3 document number: 45215 for technical questions, contact: chipantenna@vishay.com this document is subject to change without notice. the products described herein and this document are subject to specific disclaimers, set forth at www.vishay.com/doc?91000 antenna s11 on test board antenna vswr on test board
vj5101w157gxcmt www.vishay.com vishay revision: 30-apr-13 4 document number: 45215 for technical questions, contact: chipantenna@vishay.com this document is subject to change without notice. the products described herein and this document are subject to specific disclaimers, set forth at www.vishay.com/doc?91000 radiation pattern radiation pattern and gain were dependent on measurement board design. the specification of vj5101w157gxcmt antenna was measured based on the pcb size and installation position as show n in the below figure test board vertical horizontal y - z plane average gain = 0.651 dbi peak gain = - 6.92 dbi, average gain = - 12.58 db i peak gain = 2.49 dbi, average gain = 0.44 dbi x - z plane average gain = - 3.82 dbi peak gain = 1.27 dbi, average gain = - 4.23 dbi pe ak gain = - 8.51 dbi, average gain = - 14.30 dbi x - y plane average gain = - 2.93 dbi peak gain = 1.42 dbi, average gain = - 3.37 dbi pe ak gain = - 7.87 dbi, average gain = - 13.13 dbi
vj5101w157gxcmt www.vishay.com vishay revision: 30-apr-13 5 document number: 45215 for technical questions, contact: chipantenna@vishay.com this document is subject to change without notice. the products described herein and this document are subject to specific disclaimers, set forth at www.vishay.com/doc?91000 soldering condition typical examples of soldering processe s that provide reliable joints withou t any damage are given in figure 2. packaging plastic tape specifications (dimensions in mm) a o b o ?d t w e f p o p 1 p 2 3.40 0.10 10.20 0.10 1.50 0.10 1.00 0.10 24 0.30 1.75 0.10 11.50 0.10 4.00 0.10 8.00 0.10 2.00 0.10 ordering information vishay material packaging quantity vj5101w157 chip antenna vj5101w157gxcmt 2000 pieces
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