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Home Products Antennas B104 antenna
Antenna В104
B104 antenna is designed to receive signals of GLONASS / GPS in the frequency range from 1570 to 1606 MHz and application for mobile objects (cars) in harsh environments, with high levels of interference.

B104 antenna

B104 antenna

Design features

Antenna is resistent to strong out of band interference (allowable noise levels, depending on the frequency of the interference from -80 dBW to -4.5 dBW see tables - Thresholds interference in the form of harmonic oscillations at the inlet LNA on signals GPS / GLONASS).
Also antenna is resistant to the powerful in-band interference (allowable noise levels up to 1 W).
Emitter antenna is made of ceramic.
Antenna housing is made of aluminum alloy, radome - made of impact resistant plastic, cast.
The antenna mount is magnetic and (or) screws.

Frequency responce
Frequency responce

Specifications and operating conditions

Parameter Value
 Frequency range, MHz from 1570 to 1606
 Output impedance, Ohm 50
 Output VSWR, no more 2
 Polarization circular, right
 The gain of the emitter at the zenith, dBik 4
 The gain of LNA, dB 30±2
 The noise of LNA no more, dB 3,2
 The frequency selectivity of the filter f0 ± 50 MHz no less, dB 40
 Supply, V from 2,9 to 5,0
 Current no more, mA 15
 Dimension, mm:
         - diameter
         - height
63
21
 Mass no more, kg 0,12
 Protection IP 65
 Operation temperature, °C from -40 to +70
 Storage temperature, °C from -50 to +70
 Humidity at 25 °C, % 100
 Connector Plug TNC

Variants antenna

Variants Gain1)(type), dB Cable
length, м Type
00 26 5 RG-174
01 27 5 RG-316
 1) Taking into account the gain the emitter the antenna and cable  attenuation

Thresholds interference in the form of harmonic oscillations at the inlet LNA at GPS

Frequency range, MHz Thresholds interference, dBW
 F < 1315 -4,5
 1315 < F < 1525 from -4,5 to -42,0*
 1525,00 < F < 1565,42 from -42,0 to -150,5*
 1565,42 < F < 1585,42 -150,5
 1610 < F <1618 from -75 to -72*
 1618 < F < 1635 from -72 to -52*
 1635 < F < 2000 from -52,0 to -8,5*
 F > 2000 -8,5
 * Value of a linear change

Thresholds interference in the form of harmonic oscillations at the inlet LNA at GLONASS

Frequency range, MHz Thresholds interference, dBW
 F < 1315 -4,5
 1315 < F < 1525 from -4,5 to -42,0*
 1525,00000 < F < 1562,15625 from -42 to -75*
 1562,15625 < F < 1583,65625 from -75 to -80*
 1583,65625 < F < 1592,95250 from  -80 to -149*
 1592,9525 < F < 1609,3600 -149
 1609,36000 < F < 1613,65625 from -149 to -80*
 1613,65625 < F < 1635,15625 from -80 to -52*
 1635,15625 < F < 2000,00000 from -52,0 to -8,5*
 F> 2000 -8,5
 * Value of a linear change