Laird Technologies, formerly Centurion

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Antennas
Telematics	In-Building	Wireless	Handsets	Two-Way Radio


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Antenna Products XM20 Satellite Radio Antenna


Series: Telematics Model: XM20
FEATURES: Lowest profile and most cost effective antenna for satellite radio. Adhesive mount - no drilling required. Low profile and aerodynamic shape does not alter vehicle appearance.

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GENERAL SPECIFICATIONS

MECHANICAL:

MAX HEIGHT (mm)		16
DIAMETER (mm)		102
CABLE LENGTH (ft)		14
CABLE DIAMETER (in)		0.077 dual RG-178 coaxial

SATELLITE ANTENNA:

Parameters		Average Gain
SATELLITE 20º ELEVATION ANGLE (dBic)		+1.0
SATELLITE 25º ELEVATION ANGLE (dBic)		+1.5
SATELLITE 30º <= x <= 60º ELEVATION ANGLE (dBic)		+2.0

TERRESTRIAL ANTENNA:

Parameters		Average Gain (dBi)	Max-Min Ripple (dB)
TERRESTRIAL 0º ELEVATION ANGLE (dBic)		-1.0	4

LNA:

Parameters		Satellite	Terrestrial
MAX NOISE FIGURE (dB)		1.1 nom 1.6 max	1.5 nom 2.0 max
OPERATING FREQUENCY RANGE (MHz)		2332.5-2345	2332.5-2345
TOTAL ACTIVE GAIN (dB) (includes cable)		20-24	18-22
INPUT IP3 (dBm)		-15	-10
MINIMUM FILTER ATTENUATION AT fc+230 MHz (dB)		25	25
MINIMUM FILTER ATTENUATION AT fc-230 MHz (dB)		25	25
NOMINAL OUTPUT IMPEDANCE (Ohms)		50	50
MAX OUTPUT VSWR (at antenna connectors)		1.5:1	1.5:1
MINIMUM P1dB AT 1850-1990 MHz (dBm)		-10	-6
MINIMUM P1dB AT 1433 MHz (dBm)		-10	-7
MINIMUM P1dB AT 824-894 MHz (dBm)		-5	0
MINIMUM P1dB at 450 MHz (dBm)		0	+5
3RD ORDER IMRR AT 1883.565 MHz AND 1433.565 MHz (dBm)		-35	-33
MIXING IMRR AT 1883.565 MHz AND 450 MHz (dBm)		-35	-33

MINIMUM ISOLATION, TERRESTRIAL IN TO SATELLITE OUT (dB)		25
MINIMUM ISOLATION, SATELLITE IN TO TERRESTRIAL OUT (dB)		25

OPERATING LIMITS:

Parameters		Min	Typical	Max
SUPPLY VOLTAGE (V)		3.6	-	5.5
SUPPLY CURRENT FOR COMPLETE MODULE (ma)		30	60	80
OPERATING TEMPERATURE RANGE (ºC)		-40	-	+85
RELATIVE HUMIDITY (%)		5	-	95
STORAGE TEMPERATURE (ºC)		-60	-	+95

CABLE CONNECTOR SMB FAKRA PLUG:

XM Spec #	Branch	Color	Key
ANT 270	Satellite	Curry	K
ANT 280	Terrestrial	Green	E