OTM vehicle antenna GK800

OTM Limousine image

On the Move Antenna

The On The Move (OTM) antenna is a satellite antenna that tracks satellites on-the-go and enables communication, and its panels are manufactured by waveguide mixed flat plate array technology. Under the control of the servo system, the OTM can pinpoint and track satellites on the move. This antenna can be controlled using ACU equipment.

The antenna panel is a single plate structure that supports full duplex communication in the VSAT network. The servo system provides fully automated capabilities for antenna placement, satellite search, accurate pointing, and automatic tracking. Alignment errors due to antenna initial heading and tilt during satellite pointing can be corrected automatically using the servo system. Within three minutes of satellite pointing, you can finish antenna setup and satellite points.

When a vehicle with an OTM antenna moves, the OTM antenna automatically tracks the satellite in real time using GPS information. When passing through a shaded area, such as a tunnel, the GK800 antenna immediately re-pots and starts communication within 10 minutes of the start of the shaded area.

High gain reputation with low side lobes

The QFPA antenna is based on a plane layout of many waveguide horn antennas. Each waveguide horn antenna in the panel is an independent combination of small waveguide horn and mini antenna, which is the primary antenna element and supports dual frequency, dual biased and dual communication

Two parallel supply structures in parallel configurations are used to connect the RX and TX ports individually in each element from OMT to LNB and BUC. In the power supply circuit network, the antenna panel divides the RF signal, which is transmitted 16*16, into equal power, and the impedance matches well. In addition to the basic antenna elements, the power supply network is made of waveguide.

QFPA provides much higher efficiency than a typical parabolic reflector antenna because of the low RF transmission loss on the wave. A high gain is achieved with the aperture of the antenna fixed, and a small aperture is created when the gain is constant. With a panel size of 50*50 cm, the QFPA is the same as the 0.65-0.7 m parabolic reflector antenna under the same gain conditions.

The QFPA antenna panel consists of 16*16 primary antenna elements. That is, there are 256 independent variable groups on the surface of the panel. By adjusting these variables, you can control the field strength distribution on the panel to optimize the desired transmission pattern with a side lobes much lower than the common reflector antenna, which can only use a close uniform field strength distribution.

For reflector antennas, the CCIR issued a requirement of -14 dB on the first side lobes. QFPA is a special field distribution design that allows the first segment of -22 dB and is much better than the CCIR standard. A very low side lobes can operate small flat antennas with high power amplifiers that have less interference with other satellite communications.

OTM GK800 antenna automatic pointing image