Results 201 to 210 of about 21,578 (263)
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2004 IEEE MTT-S International Microwave Symposium Digest (IEEE Cat. No.04CH37535), 2004
In this paper, a unique concept for RF MEMS waveguide switches is introduced. The proposed structure employs a ridge waveguide integrated with MEMS actuators. The switch combines the advantages of MEMS technology with the high power handling capability of waveguide technology. It also promises to be useful in high frequency applications 100-200 GHz. In
M. Daneshmand, R.R. Mansour, N. Sarkar
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In this paper, a unique concept for RF MEMS waveguide switches is introduced. The proposed structure employs a ridge waveguide integrated with MEMS actuators. The switch combines the advantages of MEMS technology with the high power handling capability of waveguide technology. It also promises to be useful in high frequency applications 100-200 GHz. In
M. Daneshmand, R.R. Mansour, N. Sarkar
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MEMS TECHNOLOGY FOR RF SWITCHES
Sensors and Microsystems, 2004In the last years there was an increasing interest in micromachined RF switches, mainly in the communication and space industries. This article describes a fabrication process used for the development of electrostatically actuated MEMS RF switches operating in the 2 - 40 GHz range.
F Giacomozzi +4 more
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A Comparison between RF MEMS Switches and Semiconductor Switches
2004 International Conference on MEMS, NANO and Smart Systems (ICMENS'04), 2004This paper addresses the fundamentals of RF switches providing a comparison between semiconductor and RF MEMS switches. The basis of comparison is introduced by defining a figure of merit that is a function of the off-state capacitance and the on-state resistance.
Grant, P. D. +2 more
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RF MEMS switches and switch circuits
IEEE Microwave Magazine, 2001MEMS switches are devices that use mechanical movement to achieve a short circuit or an open circuit in the RF transmission line. RF MEMS switches are the specific micromechanical switches that are designed to operate at RF-to-millimeter-wave frequencies (0.1 to 100 GHz).
G.M. Rebeiz, J.B. Muldavin
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Proceedings of the 50th IEEE Holm Conference on Electrical Contacts and the 22nd International Conference on Electrical Contacts Electrical Contacts, 2004., 2004
Modern RF relays have to carry and to switch DC as well as AC and RF signals with frequencies up to the GHz range. While the switching phenomena for switching DC loads or low frequency AC loads are very well known, only very limited information is available for switching RF signals up to 5 GHz.
W. Johler, W. Rieder
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Modern RF relays have to carry and to switch DC as well as AC and RF signals with frequencies up to the GHz range. While the switching phenomena for switching DC loads or low frequency AC loads are very well known, only very limited information is available for switching RF signals up to 5 GHz.
W. Johler, W. Rieder
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RF-MEMS switches: paradigms of microwave switching
APMC 2001. 2001 Asia-Pacific Microwave Conference (Cat. No.01TH8577), 2002This paper reviews the most recent development of RF-MEMS switches in microwave and mm-wave frequencies up to 110 GHz W-band frequencies. RF-MEMS switches are categorised in different configurations such as cantilever, air-bridge and diaphragm with series and shunt configurations and resistive and capacitive contacts.
M.N. Mollah, N.C. Karmakar
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RF-CMOS oscillators with switched tuning
Proceedings of the IEEE 1998 Custom Integrated Circuits Conference (Cat. No.98CH36143), 2002Fully integrated CMOS oscillators are of great interest for use in single-chip wireless transceivers. In most oscillator circuits reported to date that operate in the 0.9 to 2 GHz frequency range, an integrated spiral inductor sets the frequency. It is generally believed that an LC oscillator, even when it uses a low-Q inductor, displays a lower phase ...
A. Kral, Farbod Behbahani, Asad A. Abidi
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IEEE Journal of Solid-State Circuits, 2003
Addressing reconfiguration of radio frequency (RF) systems might require high performance integrated RF switching capabilities. In this regard, a particular design experience of an integrated circuit (IC) monolithically integrated microelectromechanical systems (MEMS) ohmic switch is reported here. Applications at 2 GHz have been targeted.
Daniel Saias +6 more
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Addressing reconfiguration of radio frequency (RF) systems might require high performance integrated RF switching capabilities. In this regard, a particular design experience of an integrated circuit (IC) monolithically integrated microelectromechanical systems (MEMS) ohmic switch is reported here. Applications at 2 GHz have been targeted.
Daniel Saias +6 more
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Linearity and RF Power Handling of Capacitive RF MEMS Switches
2019 IEEE MTT-S International Microwave Symposium (IMS), 2019Linearity characteristics of capacitive tuners under large radio frequency (RF) power have become an important issue for today’s cellphone industry. The use of these devices as antenna tuners has become critically important due to the RF spectrum opening in the low-frequency range.
David Molinero +3 more
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IEE Colloquium on How to Design RF Circuits, 2000
Switches are widely used in many RF systems, from low power transmit-receive switches in time division duplex wireless transceivers to millimetric wave beam-squinting systems for satellite tracking to high power (often military) phased array systems.
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Switches are widely used in many RF systems, from low power transmit-receive switches in time division duplex wireless transceivers to millimetric wave beam-squinting systems for satellite tracking to high power (often military) phased array systems.
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