GPS Antenna with Low Noise Amplifier

Model SM-76 *Low Voltage Input* , * High Gain*

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SM-76 is the integration of the high performance GPS patch antenna and a state-of-the-art low noise amplifier into a very low profile/extremely compact/fully waterproof enclosure, when connected to a GPS receiver with +2.5 to +12Vdc antenna power it can provide excellent signal amplification and out of band filtering & rejection for that receiver.


General Descriptions: The text specify the basic operation characteristics of the Active GPS antenna Model SM-76 under standard test condition of +3 & +5Vdc and 25*C /50%R.H. respectively.

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Physical Constructions:

bulletConstructions: Polycarbonate radome enclosure,die-cast-shell at the bottom, water
proof rubber gasket seal.
bulletDimensions: 58mm(L)x 48mm(W)x 15mm(H).
bulletWeight: 65grams (w/o cable & connector)
bulletStandard Mounting: 2 magnet mount and/or screw mount with 2 M3 tapped holes on
die-cast base.
bulletMounting plate: Metal flanges with holes for permanent mount.

Cable & Connector:

bulletRF cable: 5 meter RG174/U (standard) cable & length (optional)
bulletPulling strength: 6 Kg @ 5sec.
bulletConnector available: MCX right angle, BNC straight or FME
bulletOptional: Universal Connector Adaptor: (FME to TNC/BNC/SMA/SMB/MCX)

Antenna Element:

bulletCenter Frequency: 1575.42 MHz +/-1.023MHz
bulletPolarization: R.H.C.P. (Right Handed Circular Polarization).
bulletAbsolute Gain @ Zenith: +5 dBi typical.
bulletGain @ 10 Elevation: -1 dBi typical.
bulletAxial Ratio: 3 dB max.
bulletOutput VSWR: 1.5 max.
bulletOutput Impedance: 50 W

Low Noise Amplifier:

bulletCenter Frequency: 1575.42 Mhz +/- 1.023 MHz.
bulletPower Gain: 27 dB typical.
bulletBandwidth: 2 MHz min.
bulletNoise Figure:1.5 max.
bulletSupply Voltages: +2.5 ~5.5V DC.
bulletCurrent Consumption: 7mA +/-0.3mA
bulletVSWR: 2.0 max
bulletOutput Impedance: 50 W

Overall Performance: (antenna element, LNA & cable)

bulletCenter Frequency: 1575.42 MHz.
bulletGain: 28 dB min.
bulletNoise Figure: 2.0 max.
bulletAxial Ratio: 3 dB max.
bulletVSWR: 2.0 max.
bulletOutput Impedance: 50 W


bulletOperating Temperature: -40 C~ +85 C.
bulletStorage Temperature: -45 C~ +90 C.
bulletRelative Humidity: 95% non-condensing.
bulletWater Resistance: 100% waterproof.