Anti-jamming GNSS antenna ZT022

ZT022 is a reliable positioning solution that protects your systems from radio interference and jamming. It combines an anti-jamming antenna array and a GNSS antenna element in a robust, marine housing. The system can mitigate deliberate or unintentional interference and jamming effects so that the GNSS receiver continues to function correctly. Thanks to low power consumption (15 W), low weight (1.9 kg) and compact dimensions (Ø178 x H56 mm), this product is designed for rapid deployment and offers future-proof compatibility, ideal for different vessel types.

core technologies

• 6-element B1L1E1 anti-jamming antenna array combined with a GNSS antenna element for all bands
• Multi-stage pre-filters for effective suppression of external signals (>40 dB at 1509 MHz & 1629 MHz)
• Improved lightning and surge protection
• Robust, 10W burn-out-resistant chip
• Integrated antenna design with shock and vibration resistant housing, waterproof and dustproof according to IP67
• Special anti-corrosion coating, ideal for maritime applications
• Flexible mounting options: surface and pole mounting

Integrated multi-element anti-jamming antenna
The ZT022 anti-jamming GNSS antenna features a 6-element B1L1E1 anti-jamming antenna array on the outer edges and a central GNSS antenna element. The central GNSS antenna supports GPS, BDS, Galileo and GLONASS and provides RTK accurate positioning in interference-free environments. In the event of interference, ZT022 automatically switches to anti-jamming mode, activates the antenna array and continues to provide precise positioning data. This system handles complex environments with targeted and random interference and automatically switches between anti-jamming and normal mode.

Excellent anti-jamming capabilities
ZT022 handles interference from up to six B1L1E1 signal sources and can withstand a maximum power of -30 dBm for one source, -40 dBm for three sources and -45 dBm for six sources. Below these values, ZT022 reliably delivers stable and reliable satellite signals for positioning without requiring prior knowledge of the interference conditions.

Improved external signal suppression
ZT022 is equipped with a robust 10W burn-out resistant chip that extends lifetime and improves reliability under harsh conditions. Multi-stage pre-filters attenuate external signals (>40 dB at 1509 MHz and 1629 MHz) and prevent saturation of the GNSS antenna, ensuring reliable operation in complex electromagnetic environments.

Robust and durable construction
ZT022 features an integrated antenna design with IP67 certified protection against water and dust, so the core components are completely sealed. The robust fiberglass housing and aluminum alloy base provide exceptional resistance to shock and vibration. A special anti-corrosion coating is provided for long-term marine use. Lightning and surge protection are built in to increase the safety of the antenna. Flexible mounting options such as surface and mast mounting are available to meet customers' requirements.

Accesories
The 5/8" mast mount accessory is optional and sold separately. The standard mounting for the anti-jamming GNSS antenna is a 4-hole screw mount.

parameter	details
antenna elements	6-element B1L1E1 anti-jamming antenna array
	Full band GNSS antenna element (GPS L1/L2, BDS B1/B2b, Galileo E1/E5, GLONASS L1/L2)
isolation	Co-Frequency Unit Antenna ≤ -15 dB
reinforcement	3 dBic
VSWR	2.0
impedance	50Ω
polarization	Central element: Right-hand circular polarization
	Peripheral elements: Linear polarization
LNA Gain @ B1/L1/L2 (High Precision)	Anti-jamming antenna array: 20±1 dB
	GNSS antenna: 36±2 dB
out-of-band damping	@50M≥40dB @1509M & @1629M
noise figure	≤2 dB
burnout resistance	≥10 W
operating voltage	DC 9-32V (Antenna LNA: 3.3-12V)
operating current	Each channel <120 mA
	antenna array elements: <100 mA
power consumption	<15 W
number of sources of interference	6
signal-to-noise ratio	single element ≥100 dB
	triple element ≥90 dB
	six-element ≥85 dB
Color	gray-white
Dimensions	φ178 x H56 mm (without connectors, accessories and tolerances)
Weight	≤1.9 kg (including bracket)
assembly	surface mounting (4-hole screw mounting)
	post mount (5/8 accessory post mount)
Plug	RF signal: TNC-K
	Power supply + control signal: ZLN.2F.316.-CLL-2B socket
operating temperature	-40°~+70°
storage temperature	-45°~+85°
waterproof rating	IP67
salt spray test	carried out for 28 days using neutral salt mist
Mechanical shock test	≤50 g
quality level	industrial quality
product certification	RoHS
localization rate	100%
pin definition	1: VCC (9~32V)
	2: VCC (9~32V)
	3: GND
	4: GND
	5: RS232-TXD
	6: RS232-RXD
	7: RX232-GND
	8-16: NC