Design of a microprocessor controlled 3-D workbench

Download

082555.pdf

Date

1999

Author

Dayanç, Koray

Metadata

Show full item record

Item Usage Stats

117
views

0
downloads

URI

https://hdl.handle.net/11511/2074

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

Design of a Re-configurable dual frequency microstrip antenna with integrated RF MEMS switches Onat, Sinon; Ünlü, Mehmet; Alatan, Lale; Demir, Şimşek; Akın, Tayfun (2005-07-08) The complete design of a re-configurable dual frequency antenna structure, including its integrated RF MEMS switches and their actuation lines together with a CPW feed, is introduced. The number of switches used in the inset is decreased compared to the hybrid design we presented previously (Onat, S. et al., IEEE Int. Antennas and Propag. Symp., vol.2, p.1812-15, 2004). Instead of utilizing available RF MEMS switches, new switches suitable for this application are designed. Two different switch configuratio...
Design of an X-band 3-bit RF MEMS constant phase shifter Kuzubaşlı, Ahmet; Akın, Tayfun; Demir, Şimşek; Department of Electrical and Electronics Engineering (2016) This thesis presents a 3-bit 180° constant phase shifter design implementing Co-Planar Waveguide (CPW) and RF MEMS variable capacitors with ±1.8% accuracy at 10 GHz and ±5.8% maximum peak error between 9-11 GHz. The phase shifter with minimum phase errors is determined by considering exemplary circuit simulations of different phase shifter types designed with a novel in-house RF MEMS fabrication process [1] parameters. Due to its wide-band characteristics and CPW compatibility, the selected topology is the ...
Design of a multi-frequency underwater transducer using cylindrical piezoelectric elements Yavuz, Şiar Deniz; İder, Kemal S.; Köymen, Hayrettin; Department of Mechanical Engineering (2011) In this thesis, numerical and experimental design of a multi-frequency underwater acoustic transducer with cylindrical piezoelectric ceramic tubes is studied. In the numerical design, the acoustic, mechanical and thermal performances of the transducer are investigated by means of finite element method (FEM) in ANSYS. The design of the transducer that meets the acoustic requirements is checked in terms of the mechanical and thermal performances. After the completion of the numerical design, the transducer is...
Design of pattern reconfigurable antenna employing RF-MEMS switches Gök, Çağlar; Alatan, Lale; Department of Electrical and Electronics Engineering (2022-8-17) In this thesis, the design, simulations, fabrication and measurements of reconfigurable antennas for use in 5G Massive MIMO systems are presented. 26 GHz is chosen as the operating frequency and RF-MEMS switches are used as control elements for pattern reconfiguration. As a first step, a patch antenna is designed based on the excitation of different operation modes of different resonators. A circular patch in the center and a ring resonator structure around it are used to create different radiation patterns...
Design of a multi-layer beam-steering WLAN antenna Yilmaz, Kardelen; Nesimoglu, Tayfun (2018-11-02) This paper represents the design of a microstrip patch antenna which is reconfigurable by means of the effect of a pixel grid overlay that is placed at a certain distance from the antenna. hi addition to beam steering capability, this article will focus on several important parameters of the aforementioned antenna, such as, the directivity, the gain, radiation pattern and polarization. The antenna consists three main parts; a rectangular microstrip patch antenna that has the operating frequency at around 2....