A 35 GHz High Isolation RF MEMS SPDT Switch

Comart, Ilker
Çetintepe, Çağrı
Demir, Şimşek
Akın, Tayfun


A 15-40-GHz Frequency Reconfigurable RF MEMS Phase Shifter
Ünlü, Mehmet; Demir, Şimşek; Akın, Tayfun (Institute of Electrical and Electronics Engineers (IEEE), 2013-08-01)
This paper presents a novel frequency reconfigurable phase shifter using the RF microelectromechanical systems (MEMS) technology. The phase shifter is based on the triple-stub circuit topology composed of three stubs that are connected by two transmission lines that are all implemented as distributed MEMS transmission lines. The insertion phase of the circuit is controlled by changing the electrical lengths of the stubs and the connecting transmission lines, while having ideally zero reflection coefficient ...
A 35 GHz coplanar waveguide power divider
Gürbüz, Ozan Doǧan; Topalli, Kagan; Ünlü, Mehmet; Demir, Şimşek; Akın, Tayfun (2010-12-20)
This text presents the design and measurement of a power divider topology implemented using coplanar waveguides by micromachining technology. The power divider is a three port structure. For simple three port power divider structures significant modifications are needed for changing power division ratio. For the proposed one in this paper the ratio can be adjusted by changing only the lengths of shunt stubs included in the structure. The design is at 35 GHz and the implementation is done by coplanar wavegui...
A High performance automatic mode-matched MEMS gyroscope
Sönmezoğlu, Soner; Demir, Şimşek; Department of Electrical and Electronics Engineering (2012)
This thesis, for the first time in the literature, presents an automatic mode-matching system that uses the phase relationships between the residual quadrature and drive signals in a gyroscope to achieve and maintain the frequency matching condition, and also the system allows controlling the system bandwidth by adjusting the closed loop parameters of the sense mode controller, independently from the mechanical sensor bandwidth. There are two mode-matching methods, using the proposed mode-matching system, p...
A low-drift silicon MEMS resonant accelerometer
Gavcar, Hasan Doğan; Akın, Tayfun; Department of Electrical and Electronics Engineering (2023-1-23)
This thesis presents the design, fabrication, and experimental verification of low temperature drift silicon resonant accelerometers for tactical grade applications. The working principle of a silicon resonant accelerometer is based on force sensing, in which the sensor output is a frequency proportional to the input acceleration. The stress-insensitive sensor design prevents the thermal stress produced by the mismatch of the thermal expansion coefficients (CTE) of glass and silicon from transmitting to the...
A reconfigurable RF MEMS triple stub impedance matching network
Unlu, M.; Topalli, K.; Atasoy, H.I.; Temocin, E.U.; Istanbulluoglu, I.; Bayraktar, O.; Demir, Şimşek; Civi, O.A.; Koç, Seyit Sencer; Akın, Tayfun (2006-09-12)
This paper presents a reconligurable triple stub impedance matching network using RF MEMS technology centered at 10GHz. The device is capable of covering impedances on the whole Smith Chart. The device structure consists of three variable length stubs which are designed as distributed MEMS transmission lines and two lambda(g)/8 length CPW transmission fines connecting the stubs. The variable length stubs are implemented with 12 MEMS switches over CPW lines and CPW lines connecting the switches. lambda(g)/8 ...
Citation Formats
I. Comart, Ç. Çetintepe, Ş. Demir, and T. Akın, “A 35 GHz High Isolation RF MEMS SPDT Switch,” 2012, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/83133.