spe - 11 - 8 - 058 / c /ss page 1 of 1 specification part no. : gsa . 8821 .a . 301 721 product name : i - bar penta - band gsm antenna works with gsm / cdma / pcs / dcs /umts/ wcdma features : low profile for easy installation 3m rg - 174 fakra code d violet connector ro hs compliant photo :
spe - 11 - 8 - 058 / c /ss page 2 of 2 1. introduction the gsa . 8821 i - bar penta - band gsm antenna is flexible and robust . its slim - line design allows for covert and convenient installation in automotive vehicles , its omni - directional gain across all bands ensu res constant reception and transmission. it is a high gain, high efficiency solution which complies with at&t standards for high efficiency antennas. cables and connectors are fully customizable. it comes with strong 3m double - sided adhesive for a permanen t and secure fix to your vehicle interior. the gsa.8821 is first tier automotive approved and the part gsa.8821. a 301721 (with fakra code d connectors) is listed in the global automotive imds databases, it has gone through full ppap design, reliability and quality audits, including audits at the production facility.
spe - 11 - 8 - 058 / c /ss page 3 of 3 2. antenna specifications communication system penta - band cellular amps gsm dcs pcs umts frequency (mhz) 824 ~ 896 880~960 1710~1880 1850~1990 1710~2170 average efficiency 47% 67% 59% 54% 57 % average gain (dbi) 2.1 3.9 4.1 3.2 3.2 impedance 50 ohm radiation pattern omni - directional polarization linear (vertical) input power 10 watts input connection coaxial cable - rg174 standard, fully customizable vswr <3 .0 : 1 dimensions (mm) 10 6.7 x 14.7 x 5.8 mm weight 40g casing abs polylac pa - 757 waterproofing sealing film waterproof ip - 65 temperature range - 40c to +85c thermal shock 100 cycles - 40c to +80c humidity non - condensing 65c 95% rh shock (drop test) 1m drop on concr ete 6 axes cable pull 8 kgf
spe - 11 - 8 - 058 / c /ss page 4 of 4 3. antenna electrical characteristics 3.1 test setup gsa . 8821 is tested in the ctia 3d chamber for the free space radiation in a certification laboratory in taiwan. antenna setup in ctia 3d chamber
spe - 11 - 8 - 058 / c /ss page 5 of 5 3.2 radiation pattern
spe - 11 - 8 - 058 / c /ss page 6 of 6 3.3 gain & efficiency plot vs frequency 3.3.1 gain 3.3.2 efficiency
spe - 11 - 8 - 058 / c /ss page 7 of 7 3.4 return loss gsa. 8821 is placed on a piece of styrofoam on an empty carton for measuring free space return loss. since gsa. 8821 is designed to mount in a car, it also adheres dire ctly on the test instrument metal box to simulate the application environment. agilent 8753se network analyzer is used for the s11 measurement. free space return loss measurement setup gsa. 8821 adhered to metal
spe - 11 - 8 - 058 / c /ss page 8 of 8 gsa. 8821 return loss in free space and adhered to metal. the oscillation introduced by the 3m cable is smoothed with a factor of 1%.
spe - 11 - 8 - 058 / c /ss page 9 of 9 4. mechanical drawing (unit:mm)
spe - 11 - 8 - 058 / c /ss page 10 of 10 5. packing
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