The group is focused on the design and implementation of Radio and LEO satellite communication systems and subsystems.

• Digital, Analog and RF receiver/transmitter design

Some of the projects completed in recent years:

• Receiver design and simulation for DSSS-CDMA system
• MAC and LLC layer protocol design and implementation for cellular type radio networks
• Implementation of data and message exchange protocols for radio networks
• Installation support for BİLSAT ground station
• Installation of research laboratory with up to 18 GHz measurement capacity
• Implementation of time and frequency synchronization algorithms on TMS320C6701;
• Design and implementation of a receiver/transmitter for LEO satellites
• Power Amplifier design and implementation
• Wideband Coupler design and implementation
• RF-IF Microwave Filter design and implementation
• High data rate modulator/demodulator design and implementation
• Error Correction Code Implementation (RS, Convolutional)

Projects

RASAT X-Band Transmitter
It is designed as a communication subsystem of a LEO Remote Sensing Satellite at 700 km altitude. Analog, digital and RF subsystems are designed and implemented. Power amplifier of the transmitter is designed with high power efficiency for satellite applications. The system is CCSDS compatible.

Specifications: 

1. Center frequency : 8.23 GHz
2. Modulation : QPSK-OQPSK
3. Data rate : 25/50/100 Mbps
4. FEC: RS & Convolutional
5. Output power : 7 W (38.5 dBm)
6. Efficiency : 25-30 %

Phase Array Antenna
It is designed for Ground Stations of LEO satellites. It could be installed on mobile or fixed platforms. Antenna pattern could be controlled at horizontal and vertical axis.

Specifications:

1. Center Frequency : 8.2 GHz
2. Bandwitdh : 300 MHz

Digital Frequency Discriminator

The system is being designed to detect the accurate frequency of the incoming RADAR signals.