S-band hybrid 4 bit phase shifter using cots components

Download

index.pdf

Date

2009

Author

Erkek, Eser

Metadata

Show full item record

Item Usage Stats

191
views

132
downloads

Microwave and millimeter-wave phase shifters are one of the most important structures of the antenna series that are used in communication and radar applications. They are used to form the main beam of the electronically scanned phase array antennas and generate the appropriate phase values for the antenna elements design while providing electronic beam steering. In this thesis, S-band hybrid 4 bit phase shifter of 22.5º phase resolution is designed, simulated, fabricated and measured. Bits are separately designed to maintain low phase errors and return loss. In this manner, fabrication and measurements are performed for each bit. These measurements are carried on since each bit reached to its acceptable level of operation. According to the outcomes and acquired knowledge, layout for optimum cascading of 4 bits is developed. Measurement results are compared with simulations and repeatability is tested to observe if it is convenient to use in mass production. Designs and simulations are performed by using ADS2008®.

Subject Keywords

Electrical engineering., Electronics.

URI

http://etd.lib.metu.edu.tr/upload/12611086/index.pdf
https://hdl.handle.net/11511/18833

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

Dual polarized slotted waveguide array antenna Doğan, Doğanay; Aydın Çivi, Hatice Özlem; Department of Electrical and Electronics Engineering (2011) An X band dual polarized slotted waveguide antenna array is designed with very high polarization purity for both horizontal and vertical polarizations. Horizontally polarized radiators are designed using a novel non-inclined edge wall slots whereas the vertically polarized slots are implemented using broad wall slots opened on baffled single ridge rectangular waveguides. Electromagnetic model based on an infinite array unit cell approach is introduced to characterize the slots used in the array. 20 by 10 el...
Investigation of superdirective antenna arrays Baktır, Yasemin; Koç, Seyit Sencer; Department of Electrical and Electronics Engineering (2009) In some antenna applications, having high directivity while keeping the antenna dimensions small is desired, which can be obtained by use of superdirective arrays. Superdirective arrays have been popular in academic world since a superdirective array provides higher directivity than the uniformly excited antenna array of same length. In this thesis, superdirective arrays are investigated by making high precision numerical computations. Superdirective array element excitations, array factors and directivitie...
High performance readout electronics for uncooled infrared detector arrays Yıldırım, Ömer Özgür; Akın, Tayfun; Department of Electrical and Electronics Engineering (2006) This thesis reports the development of high performance readout electronics for resistive microbolometer detector arrays that are used for uncooled infrared imaging. Three different readout chips are designed and fabricated by using a standard 0.6 m CMOS process. Fabricated chips include a conventional capacitive transimpedance amplifier (CTIA) type readout circuit, a novel readout circuit with dynamic resistance nonuniformity compensation capability, and a new improved version of the CTIA circuit. The fabr...
Analysis and design of passive microwave and optical devices using the multimode interference technique Sunay, Ahmet Sertaç; Birand, Mehmet Tuncay; Department of Electrical and Electronics Engineering (2005) The Multimode Interference (MMI) mechanism is a powerful toool used in the analysis and design of a certain class of optical, microwave and millimeter wave devices. The principles of the MMI method and the self-imaging principle is described. Using this method, NXM MMI couplers, MMI splitter/combiners are analyzed. Computer simulations for illustrating the "Multimode Interference Mechanism" are carried out. The MMI approach is used to analyze overmoded 'rectangular metallic' and 'dielectric slab' type of wa...
Cmos class e power amplifier modelling and design including channel resistance effects Demir, İbrahim; Demir, Şimşek; Department of Electrical and Electronics Engineering (2004) CMOS is the favorite candidate process for the high integration of the wireless communication IC blocks, RF frontend and digital baseband circuitry. Also the design of the RF power amplifier stage is the one of the most important part of the RF CMOS circuit design. Since high frequency and high power simultaneously exists on this stage, devices works on the limits of the process. Therefore standard device models may not be valid enough for a successful design. In the thesis high frequency passive device and...

Citation Formats

E. Erkek, “S-band hybrid 4 bit phase shifter using cots components,” M.S. - Master of Science, Middle East Technical University, 2009.