X-band high power ferrite phase shifters

Download

index.pdf

Date

2010

Author

Altan, Hakkı İlhan

Metadata

Show full item record

Item Usage Stats

260
views

564
downloads

Ferrite phase shifters are key components of passive phased array antenna systems. In a modern radar system, microwave components in the transmit path should handle high microwave power levels. Also low loss operation in phase shifters is critical, since radar range depends on the microwave power transmitted from the antennas. In this respect, ferrite phase shifters provide required performance characteristics for phased array radar systems. In this thesis, Reggia-Spencer type and twin-toroid type ferrite phase shifters operating at X-Band are designed, simulated, fabricated and measured. Measurements of the fabricated ferrite phase shifters are compared with simulation results. Electromagnetic simulations are performed using CST.

Subject Keywords

Telecommunication (including telegraphy, telephone, radio, radar, television)

URI

http://etd.lib.metu.edu.tr/upload/12612410/index.pdf
https://hdl.handle.net/11511/19888

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

Comparison of the intercarrier interference cancellation methods in OFDM systems Etiler, Burkay; Tuncer, Temel Engin; Department of Electrical and Electronics Engineering (2007) In OFDM systems carrier frequency offset is observed due to Doppler shift and transmitter-receiver frequency mismatches. This offset induces ICI (Intercarrier Interference). In this thesis, repeated data methods and pilot-aided carrier frequency offset(CFO) estimation methods and windowing techniques are used to mitigate the frequency offset problem and a performance comparison is made between these ICI cancellation techniques. Repeated data methods use only half of the bandwidth for information transmissio...
The feasibility, reliable communication and networking aspects of passive wireless sensor networks Yağlı, Mehmet; Baykal, Buyurman; Department of Electrical and Electronics Engineering (2006) The primary challenge in wireless sensor network (WSN) deployment is the limited network lifetime due to the finite-capacity batteries. In accordance with this challenge, the vast majority of research efforts thus far have focused on the development of energy-efficient communication and computing mechanisms for WSNs. In this thesis, a fundamentally different approach and hence completely new WSN paradigm, i.e., the Passive Wireless Sensor Network (PWSN), is introduced. The objective of PWSN is to eliminate ...
Wideband phase shifter for 6-18 Ghz applications Boyacıoğlu, Gökhan; Demir, Şimşek; Department of Electrical and Electronics Engineering (2010) Phase shifters are common microwave circuit devices, which are widely used in telecommunication and radar applications, microwave measurement systems, and many other industrial applications. They are key circuits of T/R modules and are used to form the main beam of the electronically scanned phase array antennas. Wideband operating range is an important criterion for EW applications. Hence, wideband performance of the phase shifter is also important. In this study, four wideband phase shifter circuits are d...
Implementation of a digital signal synthesizer with high spurious free dynamic range Kılıç, Argun; Yılmaz, Ali Özgür; Department of Electrical and Electronics Engineering (2006) Today’s analog modulators and upconverters are inadequate to synthesize and modulate signals with high ‘Spurious Free Dynamic Range’ (SFDR). Thus, the main objective of this thesis is to design and implement a ‘Digital Signal Synthesizer’ (DSS) that is capable of synthesizing signals between 50-100 MHz with 60dB SFDR and to modulate them variable symbol rates and modulation techniques with very high phase/frequency resolution and switching speed while keeping the amplitude modulation occurring during a modu...
Reliable real-time video communication in wireless sensor networks Ayran, Orhan; Akan, Özgür Barış; Department of Electrical and Electronics Engineering (2007) Many wireless sensor network (WSN) applications require efficient multimedia communication capabilities. However, the existing communication protocols in the literature mainly aim to achieve energy efficiency and reliability objectives and do not address the multimedia communication challenges in WSN. In this thesis, comprehensive performance evaluation of the existing transport protocols is performed and it has been shown that the existing proposals achieve very poor performance in terms of large set of me...

Citation Formats

H. İ. Altan, “X-band high power ferrite phase shifters,” M.S. - Master of Science, Middle East Technical University, 2010.