GPS Antenna with Low Noise Amplifier

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

Overview

SM-76 is the integration of the high performance GPS patch antenna and a power-saving low noise amplifier into a low profile, extremely compact and fully waterproof enclosure. When connected to a GPS receiver with +2.5 to +5.0 Vdc antenna power, it can provide excellent signal amplification and out of band filtering and rejection for that receiver.
(This text specifies the basic operation characteristics of the Active GPS antenna Model SM-76 under standard test condition of +2.5& +5.0 Vdc and 25*C /50%R.H. respectively.)

Specification

Physical Characteristics:

• Constructions: Polycarbonate radome over a die-cast base along with detachable cable/connector for easy mount
• Dimensions: 58 mm(L)x 48 mm(W)x 15 mm(H).
• Weight: 63 grams (excluding cable & connector)
• Standard Mounting: 2 magnet mount, screw mount with 2 M3 tapped holes on the base.
• Optional mounting plate: Metal flanges with holes for permanent mount.

Cable & Connector:

• RF cable: 5 meter RG174/U (standard) cable & length (optional)
• Pulling strength: 6 Kg @ 5 sec.
• Connector available: BNC, TNC, FME, MMCX, MCX, SMA, SMB or SMC.   Straight or right angle.
• Optional: Universal Connector Adapter (FME to TNC/BNC/SMA/SMB/MCX)

Antenna Characteristics:

• Polarization: R.H.C.P. (Right Handed Circular Polarization).
• Absolute Gain @ Zenith: +5 dBi typically
• Gain @ 10º Elevation: -1 dBi typically
• Axial Ratio: 3 dB max.
• Output VSWR: 1.5 max.
• Output Impedance: 50 Ω

Low Noise Amplifier:

• Center Frequency: 1575.42 MHz +/- 1.023 MHz.
• Power Gain: 28 dB typically
• Bandwidth: 2 MHz min.
• Noise Figure: 2.5 max.
• Supply Voltages: +2.5 ~ 5.5V DC
• Current Consumption: 12mA +/- 1mA @ +3.0 ~ 5.0V DC

Overall Performance: (antenna element, LNA & coax cable)

• Center Frequency: 1575.42 MHz.
• Gain: 26 dB typically
• Noise Figure: 2.0 max.
• Axial Ratio: 3 dB max.
• VSWR: 2.0max.
• Output Impedance: 50 Ω

Environmental Conditions:

• Operating Temperature: -40ºC~ +85ºC.
• Storage Temperature: -50ºC~ +95ºC.
• Relative Humidity: 95% non-condensing.
• Water Resistance: 100% waterproof.