ANN-MB3 GPS/GNSS Antenna by u-blox AG
The ANN-MB3 from u-blox is an Active GNSS Antenna that operates from 1559 to 1606 MHz (L1-band) and 1166 to 1249 MHz (L2 and L5 bands). It is a triple-band solution designed to reduce time-to-market for modern multi-constellation, high-precision GNSS applications requiring cm-level accuracy and a reliable RTK positioning, even in challenging environments. This RHCP-polarized antenna provides a gain of 4.3 dBic with an efficiency of 75%. It has an axial ratio of less than 2.5 dB.
The ANN-MB3 also incorporates a low-noise amplifier (LNA) that provides a gain of 31 dB with a noise figure of less than 3.0 dB. It also includes a notch filter that offers an out-of-band rejection of 50 dB in the LTE B13 band. The LNA requires a DC supply of 3 to 5 V and consumes 17 mA of current. This GNSS antenna is available in a screw-mount package with a magnetic base measuring 82.0 x 60.0 x 25.5 mm and has an SMA (male) connector & a RG174 cable. It is ideal for u-blox triple-band F20 high-precision platform and F9 high-precision products that support L1, L2, and L5 bands.
Product Details
- Part Number: ANN-MB3
- Manufacturer: u-blox AG
- Description: L1/L2/L5 Triple-Band, High Precision GNSS Antenna
General Parameters
- Active/Passive: Active
- Amplifier Gain: 30 ± 3.0 dB, 31 ± 3.0 dB
- Frequency Bands: L5, L2, L1
- Frequency: 1166 – 1249 MHz / 1559 – 1606 MHz
- Gain: 3.8 to 5.5 dB
- Noise Figure: 3 dB
- Constellation: GPS
- Efficiency: 50 to 75 %
- VSWR: 2.0:1
- Voltage: 3 to 5 V
- Current: 15 mA
- Impedance: 50 Ohm
- Connectors: SMA, SMA – Male
- Cable: 5 m RG174
- Dimension: 60.0 x 82.0 x 25.5 mm
- Integration: LNA
- Mounting: Magnetic Mount
- Polarization: RHCP
- Weather: IP67
- Weight: 175 g
- Axial Ratio: 1.0 – 2.5 dB
- Operating Temperature (°C): -40 to 85 Degree C
Get in touch for orders or any queries: sales@rfdesign.co.za / +27 21 555 8400
Courtesy of everything RF

