For HFE seminar, contactless monolithic microwave integrated circuit (MMIC) to waveguide for W band is scaled up to work between 18 - 22 GHz. Contactless transition couples the electromagnetic fields between a Substrate Integrated Waveguide (SIW) and a ridge waveguide. Simulated insertion loss is less than 0.1 dB at 20 GHz for back to back configuration with approximately 34% fractional bandwidth. For more: Seminar Paper
As a part of RF IC course, I designed a LNA that works between 8 - 12 GHz. Single stage cascode topology is used. Designed amplifier provides 12.72 dB S21. S11 and S22 parameters are lower than 15 dB through the band. Maximum value for noise figure is 1.95 dB at 12 GHz and the device dissipates 11.62 mW of DC power. Device designed using Cadence Virtuoso with IHP SG25H3 technology, and the inductors were designed using Sonnet.
During my intenship at Mikroelektronik, I worked on a fully differential folded cascode OTA using
xfab 0.18µ technology. Main objective of this project was creating a design that provides following specification at
temperatures from -40 C to 114
Final design was able to satisfy open loop gain and phase margin specification for temperature variations but not
supply voltage. Moreover, unity gain bandwidth spesification does not met in any case.
For more information:
Report ~
Poster
This project was implemented on Spartan-3AN starter kit. I designed a sea clutter generator, using a very simple sea clutter model, and radar interface for generated sea clutter. Furthermore, I implemented a STC module to suppress sea clutter. STC module can be used with external output or on-board sea clutter generator. External inputs were taken from ADC and J20 header. Outputs were send to DAC and J18 header. This project was supported by HAVELSAN.
As a part of RF course I designed a transistor amplifier at 990 MHz using ADS. EM simulation results show acceptable s-parameters between 841 MHz - 1.244 GHz, without constant gain. However produced amplifier does not work. For more information: Report
As a part of Digital IC course I designed a 4-bit Synchronous Up Counter. Designed counter can work with clock frequencies up to 909.09 MHz. Schematic design made using Cadence Virtuoso with AMS 0.35µ technology. For more information: Report
As part of Antenna course we tried to design a RHCP Microstrip antenna for GPS frequency (1.5 GHz). During this project we used CST to design and simulate our Antenna. Simulation results of designed antenna provides good s11 parameter however we failed at polarisation. Measurement results were also failed to porovide RHCP. Moreover, resonance frequency of two elemets (trim and slot) shifted opposite sides. Thus s11 parameter was not acceptable at 1.5 GHz, but at 1.44 and 1.55 GHz providing dualband behaviour. For more information: Report
As part of Microwaves course we designed and implemented a doppler radar on printed circuit board. In our design; discrete amplifiers, mixer and filter were used. For more information: Report
As a part of Analog IC course I designed a two stage opamp with gain of ~79.7 dB and BW of ~905 Hz. Designed amplifier has ~266 μW power consumption, 2.5 V swing rate and ~5.3 V/μs slew rate. Both schematic and layout design made using Cadence Virtuoso with xfab 0.18µ technology. For more information: Report
We built a simple communication system using a Arduino Uno, 1w RGB LEDs and a RGB colour sensor in 9 days. At this stage our system can send and receive text massages from one Arduino to another Arduino using visible light. Currently this project is on proof of a concept state. For more information: Github repository ~ Report ~ Poster
As part of HDL course, I designed a hardware that upscales a 128x128 input image 4 times using bicubic interpolation algorithm, and displays the upscaled 256x256 output image on a monitor connected to the FPGA board.
As a part of Digital Design course we designed a simple queue management system in Verilog and implemented it on BASYS 2 FPGA board. For more information: Github repository