Home / Product / CRPA Antenna / X300D Dual Sixteen‑element GNSS Anti‑Jamming Antenna for Drones, Mapping And Marine Use

X300D Dual Sixteen‑element GNSS Anti‑Jamming Antenna for Drones, Mapping And Marine Use

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AJU‑X300D is a dual sixteen‑element integrated GNSS anti‑jamming antenna unit designed for civilian and commercial platforms that require stable satellite navigation in complex signal environments. It enhances useful signals from BDS B1, GPS L1+L5 and Galileo E1 while suppressing interference, helping industrial UAVs, agricultural drones, autonomous ground vehicles, mobile mapping systems, marine navigation and robotics maintain reliable position, velocity and timing.

X300D navigation GNSS anti jamming antenna.png

Product overview

The AJU‑X300D combines a dual sixteen‑element array antenna, anti‑jamming processing electronics, an optional built‑in GNSS receiver and interface cabling in one low‑profile module. It performs reception, amplification, down‑conversion, filtering, adaptive interference mitigation and up‑conversion for 16 channels, then provides either processed RF output or PVT data for downstream systems.

This GNSS anti‑jamming antenna is intended for lawful civilian and commercial use in environments with high electromagnetic noise, dense infrastructure or accidental interference that could otherwise reduce navigation quality. Typical applications include industrial UAV missions, precision agriculture, unmanned ground vehicles, mobile mapping platforms, marine navigation systems, robotic equipment and other autonomous systems that rely on accurate GNSS information.

X300D GNSS anti jamming antenna Size.jpg

Figure 2-1 Dimensions Drawing of Dual Sixteen-Element Array Anti-Jamming Unit (unit:mm)

X300D integrated navigation anti-jamming GNSS unit size.png

Figure 2-2 Dimensions Picture of Dual Sixteen-Element Array Anti-Jamming Unit (unit:mm)

Key features

  • Dual sixteen‑element GNSS array for advanced spatial interference suppression and improved signal quality.

  • Supports 16‑channel BDS B1, Galileo E1 and GPS L1+L5 signal processing.

  • Designed to resist broadband, narrowband, pulse, sweep and other suppression interference types, including mixed scenarios.

  • Handles 1–15 interference sources arriving from different directions, helping maintain navigation where standard antennas lose lock.

  • Built‑in receiver option provides PVT output after anti‑jamming processing for easier integration with flight controllers and navigation computers.

  • Wide DC 24–36 V power input and overhead‑mount friendly mechanical design suited to many civilian platforms.

  • J30J‑25ZKP power/data connector and SMA‑K RF connector for straightforward electrical integration.

  • Rugged design with IP65 or higher waterproof rating and wide operating temperature for outdoor use.

Technical specifications

GNSS & anti-jamming performance

Item

Specification

Array type

Dual sixteen‑element integrated navigation anti‑jamming unit

Supported GNSS bands

BDS B1, GPS L1+L5, Galileo E1

Number of channels

16 channels

Interference types

Broadband, narrowband, pulse, frequency sweep and combinations

Number of interferers

1–15 sources from different directions

Single broadband suppression

Interference‑to‑signal ratio ≥110 dB @ -130 dBm

Seven broadband suppression

≥100 dB @ -130 dBm

Fifteen broadband suppression

≥80 dB @ -130 dBm

Spatial anti‑jamming range

Azimuth 0°–360°, elevation -10°–90°

RF output and receiver

Item

Specification

RF output power

-55 dBm ~ -70 dBm

RF impedance

50 Ω

Output VSWR

≤2.0

Antenna port burnout resistance

≥10 W

Receiver output

Positioning results via data interface

Horizontal accuracy

≤7 m (95%, PDOP≤4)

Vertical accuracy

≤9 m (95%, PDOP≤4)

Velocity accuracy

≤0.2 m/s (95%)

Electrical & interface data

Item

Specification

Operating voltage

DC 24 V ~ 36 V

Average power consumption

≤40 W typical (receiver continuous), ≤70 W (receiver with AJ active)

Power/data connector

J30J‑25ZKP, 25 pins

RF connector

SMA‑K

Serial port level

Default LVTTL (3.3 V), RS422 optional

J30J‑25ZKP power & data pinout (LVTTL 3.3 V)

Pin

Signal

Description

Instructions

1

+24 V ~ +36 V

Power input

Unit power supply

2

+24 V ~ +36 V

Power input

3

GND

Power ground

4

GND

Power ground

5

RX1

TTL receive

GNSS receiver interface, 5 Hz, 115200, NMEA GGA/GSV/RMC/VTG/ZDA by default

6

NC

NC

7

NC

NC

8

TX1

TTL transmit

9

GND

Signal ground

10

RS232_RX1

RS232 receive

11

RS232_TX1

RS232 transmit

12

GND

Signal ground

13

RS232_RX2

RS232 receive

14

RS232_TX2

RS232 transmit

15

GND

Signal ground

16

+24 V ~ +36 V

Power input

Unit power supply

17

+24 V ~ +36 V

Power input

18

GND

Power ground

19

GND

Power ground

20

GND

Signal ground

21

RS232_RX3

RS232 receive

22

RS232_TX3

RS232 transmit

23

GND

Signal ground

24

RS232_RX4

RS232 receive

25

RS232_TX4

RS232 transmit

Mechanical & environmental specifications

Structure

Item

Specification

Dimensions

300 mm × 300 mm (plan size)

Mounting

Screws & brackets

16 pcs M3 screws, 4 pcs mounting brackets per set

Environment & reliability

Item

Specification

Operating temperature

Storage environment

-45℃ ~ +85℃, 10% ~ 95% RH, non‑condensing

Waterproof rating

Not lower than IP65

Shock test

ISO 19453‑3:2018 (civil small and light UAS shock)

Vibration test

ISO 5309:2023 (civil small and light UAS vibration)

Installation & packaging

The antenna is supplied in paper packaging with internal shock‑absorbing and drop‑resistant buffering for transport protection. During installation, the long sides of the mounting brackets are fixed to both sides of the antenna body with the supplied screws, then the assembly is mounted to the platform through bracket holes and all screws are evenly tightened for vibration resistance.

The bottom surface is a metal heat‑dissipation area and should be installed overhead or with good airflow to maintain proper cooling. The top surface is the GNSS receiving plane and must face open sky without obstruction; if used inside a body, the material above must be wave‑transmitting with at least 92% L‑band transmission.

GNSS Anti-Jamming Antenna Product Series.jpg

We also offer a range of civilian GNSS anti-jamming antennas, including single four‑element, dual four‑element, single eight‑element, dual eight‑element and sixteen‑element array models.
If you are interested in technical discussions or product cooperation, please feel free to contact us at any time.

Product Category

CHREDSUN provides UAV anti-jamming, water-powered energy and saltwater emergency lighting solutions with OEM/ODM support for global partners.

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