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PALS
POMA-55D
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Overview

The PALS POMA-55-D is an antenna system that delivers exceptional performance across both Ku and Ka bands. With a 55 cm diameter and the ability to switch seamlessly between bands without requiring a feed change, it im an ideal solution for high-demand communication scenarios. The system features a robust direct drive mechanism for azimuth (AZ) and elevation (EL), ensuring high reliability and precise operation. Its cap design feed enhances performance by reducing side lobes and optimizing efficiency. The POMA-55-D operates independently of GPS, utilizing advanced satellite beacon tracking to correct gyro errors. This ensures accurate satellite tracking with only a manual input of local latitude and longitude required before initial satellite pointing. Its rapid deployment capabilities allow for initial satellite pointing in under 80 seconds during GPS/BD cold starts, and less than 60 seconds during hot starts or manual input. This antenna is widely utilized in various applications, including military platforms to enhance combat mobility and effectiveness. Additionally, it supports emergency command and communication needs for public safety agencies, including police, fire services, traffic control, and civil defence.

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GENERAL SPECIFICATIONS

Aperture:

0.55m

Reflector Material:

Carbon fiber

Antenna Form

Circular symmetrical reflector and cap feed

Key Features

• The product supports operation at either Ku or Ka, but can also achieve Ku&Ka dual-band operation simultaneously according to the user’s needs without changing the feed;

• AZ and EL adopt a direct drive system, with high reliability of the product;

• Feed adopts cap design with high efficiency and good side lobe；

• High-reliability direct drive system;

• Independent of GPS information: using satellite beacon tracking to correct gyro errors, it can still work normally without GPS information (only need to manually input the local latitude and longitude before the initial pointing to the satellite);

• Fast initial pointing to satellite time: GPS/BD module cold start positioning and pointing to satellite <80s, hot start (or manual input) <60s;

• High tracking accuracy: without blockage, tracking error <0.5dB (RMS);

• Good tracking stability: AZ adopts a closed-loop stabilization algorithm, fast turning or "S" travel and can still accurately track satellites;

• Fast blockage recovery time: blockage time <5min, recovery time <3s; blockage time <20min, recovery time <5s;

• Fast satellite switching： The switching time between different satellites is <8s；

• Achieve the dynamic pointing to satellite, dynamic switching satellites etc in motion;

• The modular design of system , simple interface and convenient fault diagnosis and maintenance ；

• Use two axes for stability, and three axes for tracking and the tracking stability is high.

RF CHARACTERISTIC

Ku-Band 2 ports, Linear polarized Feed (GHz)

Rx: 10.70 - 12.75 Tx: 13.75 - 14.50

Ka-Band 2 ports, circular polarized Feed (GHz)

Rx: 17.7 - 27.5 Tx: 13.75 - 14.50

Antenna Gain at Mid-band ±0.2 dB（dBi）Ku-Band 2 ports

Rx: 34.5 Tx: 35.5

Antenna Gain at Mid-band ±0.2 dB（dBi) Ka-Band 2 ports

Rx:38.5 Tx: 42.5