San Jose Technology, Inc.

Low-Voltage GPS Antenna

Product Name :: Low-Voltage GPS Antenna

Model No :: SM-19

Description
Specification
Features
Applications

Compact & Sensitive GPS Antenna with
Excellent Signal Amplification for Mobile Applications

SM-19 is an externally mounted GPS antenna that provides continuous L1 band with high gain and low power consumption to a wide selection of GPS receivers in today's market. It is the integration of a high-performance GPS patch antenna and a low noise amplifier into a low profile, extremely compact and fully waterproof enclosure. SM-19 provides excellent signal amplification to any GPS receiver with 2.5~3.3V DC antenna power at the center pin. Coming with small size and ruggedness, SM-19 is designed mainly to meet the robust demand for a GPS antenna that can maintain GPS signal stability for automatic vehicle locating and navigation even in a harsh environment.

Specification

Physical Constructions:
Constructions:	Polycarbonate radome enclosure, die-cast-shell at the bottom, water proof rubber gasket seals.
Dimensions:	58mm(L) x 48mm(W) x 15mm(H).
Weight:	65grams (excluding cable & connector)
Standard Mounting:	magnet mount and/or screw mount with 2 pieces of M3 tapped holes on the plastic flanges
Optional mounting plate:	customized metal sheet
Cable & Connector:
RF:	5 meter RG174/U (standard) cable, other length available
Pulling strength:	6 Kg/5 sec. with molded plastics on connector end for strain relief
Connector available:	BNC, TNC, FME (to be adapted), GT5, MCX (OSX), SMA, SMB or SMC in straight or right angle type
Optional:	Universal Connector Adapter (FME to TNC/BNC/SMA/SMB/MCX)
Antenna Element:
Center Frequency:	1575.42 MHz +/-1.023 MHz
Polarization:	R.H.C.P. (Right Handed Circular Polarization).
Absolute Gain @ Zenith:	+5 dBi typical.
Gain @ 10° Elevation:	-1 dBi typical.
Axial Ratio:	3 dB max.
Output VSWR:	1.5 max.
Output Impedance:	50ohm
Low Noise Amplifier:
Center Frequency:	1575.42 MHz +/- 1.023 MHz.
Power Gain:	14 dB typically
Bandwidth:	2 MHz min
Noise Figure:	1.3 max.
Outer Band Attenuation	12dB min. @F0 +/- 140MHz
Supply Voltages:	+2.5~+3.3V DC
Current Consumption:	5.5mA +/- 1mA@3.3V.
Output Impedance:	50ohm
Overall Performance: (antenna element, LNA & coax cable)
Center Frequency:	1575.42 MHz.
Gain:	14 dB min.
Noise Figure:	2.0 max.
Axial Ratio:	3 dB max.
Bandwidth:	2MHz min.
VSWR:	2.0 max.
Output Impedance:	50 ohm
Enviromental Condition:
Operating Temperature:	-40°C~ +85°C
Storage Temperature:	-40°C~ +85°C
Relative Humidity:	95% non-condensing.
Water Resistance:	100% waterproof.