M1559CWT

## M1559CWT L1: GPS, GLONASS, GALILEO, BEIDOU 

Part #: 100-00118-01 

## **Description** 

The M1559CWT is an active multi-frequency, high accuracy, GNSS antenna for the L1 GPS, Galileo, Beidou and GLONASS band. The antenna’s excellent radiation pattern, exceptional out-of-band rejection, minimal group delay variation, and low noise figure ensures optimal performance of GNSS systems. It features a 5 m cable with an integrated SMA, SMB, or MCX connector (customer choice). The M1559CWT is ideal for applications requiring minimal integration effort or for retrofitting existing products and is rated IP67. The antenna is manufactured using automotive grade housing. **Passive Antenna Performance** Parameter Specification Frequency 1559-1610 MHz (L1, E1, B1, B1-2, G1) ~~———~~ Peak Efficiency 40% Polarization RHCP Realized Gain 3.3 dB ~~———~~ Axial Ratio Max 2.7 dB at the Zenith VSWR Max 2.3:1 Beamwidth 100˚ ~~ee~~ va **Phase Center Variation Features** Maximum Phase Center Variation (mm) 

## • Low profile design 

In azimuth plane Max 10 mm As low as 40 degree elevation Max 10 mm Between samples Max 5 mm Over frequency band Max 10 mm ~~a~~ **RF Specifications** Parameter Specification Conducted Gain 28 dB ± 3 dB ~~———~~ Noise Figure 2 dB max Voltage 3.0 - 5.0 V ~~———~~ Current 35 mA (max) Out of Band Rejection 40 dB (typical) Group Delay Variation Less than 5 ns over GNSS bands EMI Immunity Out of Band 30 V/m ESD Circuit Protection 15 kV human body model air discharge 

- Concurrent GNSS reception on L1: GPS, GLONASS, Galileo, Beidou 

- Rugged IP67 rating 

- Small form factor 

- GIS, RTK and other high accuracy GNSS applications 

- Low power consumption 

- Minimal phase center variation over azimuth and elevation 

- Negligible group delay variation 

- Automotive grade housing 

WIRELESS INNOVATIONS COMPANY MAXTENA 

Maxtena Inc. 7361 Calhoun Place, Suite 102 Rockville, MD 20855 1-877-629-8362 info@maxtena.com 

**www.maxtena.com** 

## **L1 Band Radiation Patterns** 

Maxtena’s M1559CWT uses patented optimized microstrip technology which results in minimal dependence on frequency and features wide beamwidth, low axial ratio and radiation pattern symmetry across all desired frequencies in the L1 band. 

**RHCP Realized Gain [dBic] - Elevation Cuts** 

**RHCP Realized Gain [dBic] - Azimuth Cuts** 

A 100 degree beamwidth ensures excellent hemispherical coverage. 

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Symmetric coverage even in low elevation enhances accuracy.<br>**----- End of picture text -----**<br>


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Axial Ratio [dB] - Zenith<br>**----- End of picture text -----**<br>


**Axial Ratio [dB] - Azimuth Cuts** 

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WIRELESS INNOVATIONS COMPANY<br>**----- End of picture text -----**<br>


Maxtena Inc. 7361 Calhoun Place, Suite 102 Rockville, MD 20855 1-877-629-8362 info@maxtena.com **www.maxtena.com** 

## **Phase Center Variation** 

Maxtena’s M1559CWT has minimal phase center variation over azimuth and elevation in the L1 band. 

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   Phase Center Variation vs. Elevation in L1 band.<br>**----- End of picture text -----**<br>


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   Phase Center Variation vs. Azimuth at Theta=30˚ in L1 band.<br>**----- End of picture text -----**<br>


## **Excellent Group Delay Variation** 

Using GPS carrier phase to increase accuracy in GNSS applications has been proven reliable and has made mm-level accuracy possible. However, in resolving carrier phase ambiguity, it is necessary to make sure carrier phase is received and measured accurately and the effect of antenna and receiver on carrier phase is minimized. Maxtena’s M1559CWT has a flat response over its specified GNSS band and has minimal group delay variation over frequency. 

## **Filtering and LNA Performance** 

Maxtena’s M1559CWT antenna has a flat response over the L1 band, with less than 1 dB variation over it. The superior out-of-band rejection ensures minimal interference. 

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< 2 ns group delay variation over L1-band.<br>**----- End of picture text -----**<br>


Outstanding out-of-band rejection and less than 1dB fluctuation of in-band frequency response over L1-band. 

## Maxtena Inc. 

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WIRELESS INNOVATIONS COMPANY<br>**----- End of picture text -----**<br>


7361 Calhoun Place, Suite 102 Rockville, MD 20855 1-877-629-8362 info@maxtena.com 

**www.maxtena.com** 

**Mechanical Specifications** 

Parameter Specification Weight 230 g (w/ cable) 167 g (w/o cable) Size 75 x 70 x 23 mm ~~SS~~ Cable 5 m RG174 standard Connector SMA, SMB, MCX (customer choice) Mounting Magnetic base (TNC version), fixed installation option ~~_———~~ Ground Plane 150 mm x 150 mm Color Black Operating Temperature Range -40 to +105˚C ~~oo~~ 

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 5000 ±15<br>_  75<br> 70<br>**----- End of picture text -----**<br>


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SMA(MALE) CONNECTOR<br>**----- End of picture text -----**<br>


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Dimensions are in mm.<br>**----- End of picture text -----**<br>


WIRELESS INNOVATIONS COMPANY MAXTENA 

Maxtena Inc. 7361 Calhoun Place, Suite 102 Rockville, MD 20855 1-877-629-8362 info@maxtena.com **www.maxtena.com**