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- Winter Dong Yan, R. R. Mansour
- IEEE Transactions on Microwave Theory andâ€¦
- 2007

This paper presents a novel approach for constructing a tunable dielectric resonator bandpass filter by using the microelectromechanical system (MEMS) technology. The tunability is achieved by unique MEMS tuning elements to perturb the electrical and magnetic fields surrounding the dielectric resonators. The use of such elements as a tuning mechanismâ€¦ (More)

- Frederic Domingue, S. Fouladi, A. Kouki, R. R. Mansour
- IEEE Transactions on Microwave Theory andâ€¦
- 2009

A design methodology for the distributed microelectromechanical system (MEMS) impedance matching networks based on the optimization of the uniformity of the Smith chart coverage has been developed. The proposed approach was validated through a comparison between a traditional coplanar waveguide (CPW) design and an improved design based on a slow-wave (SW)â€¦ (More)

- S. Fouladi, R. R. Mansour
- IEEE Transactions on Microwave Theory andâ€¦
- 2010

The objective of this paper is to investigate the integration of capacitive type RF microelectromechanical systems (MEMS) switches in a standard CMOS technology. A maskless monolithic integration process dedicated to electrostatically actuated capacitive type RF MEMS switches is developed and optimized. The fabricated switches consist of compositeâ€¦ (More)

- Mojgan Daneshmand, R. R. Mansour
- 2006 IEEE MTT-S International Microwave Symposiumâ€¦
- 2006

In this paper, for the first time, monolithic integration of an RF MEMS switch matrix is presented. Novel SP3T RF MEMS switches are designed and monolithically integrated with an electromagnetically coupled interconnect network. A thin film fabrication process exclusively for this purpose is developed and fine tuned. A prototype unit of a 3times3 monolithicâ€¦ (More)

- Mojgan Daneshmand, R. R. Mansour, Neil Sarkar
- IEEE Transactions on Microwave Theory andâ€¦
- 2004

This paper presents a novel concept for an RF microelectromechanical systems (MEMS) waveguide switch. The proposed switch employs a ridge waveguide integrated with MEMS rotary actuators based on a thermal plastic deformation approach. The switch promises to be useful in high-power applications, as well as in millimeter-wave applications. Two switchâ€¦ (More)

- Maher Bakri-Kassem, S. Fouladi, R. R. Mansour
- IEEE Transactions on Microwave Theory andâ€¦
- 2008

Two microelectromechanical systems (MEMS) curled-plate variable capacitors, built in 0.35-mum CMOS technology, are presented. The plates of the presented capacitors are intentionally curled upward to control the tuning performance. A newly developed maskless post-processing technique that is appropriate for MEMS/CMOS circuits is also presented. Thisâ€¦ (More)

- Mohammad Reza Memarian, R. R. Mansour
- IEEE Transactions on Microwave Theory andâ€¦
- 2009

This paper introduces for the first time a quad-mode dielectric resonator filter, using a simple cylinder resonator. A four-pole single cavity filter is designed, simulated, and fabricated based on this quadruple mode resonator. Additionally, a new type of dual-mode dielectric resonator filters is introduced, using the same cylindrical resonator cut in halfâ€¦ (More)

- Rui Zhang, R. R. Mansour
- IEEE Transactions on Microwave Theory andâ€¦
- 2007

A dielectric-resonator filter configuration implemented as a single piece of a high-<i>K</i> ceramic substrate is presented in this paper. The proposed filter configuration considerably reduces the cost of the assembly and the integration associated with conventional dielectric-resonator filters. A two- and four-pole filter of this type operating in theâ€¦ (More)

- Mojgan Daneshmand, R. R. Mansour
- Journal of Microelectromechanical Systems
- 2007

The objective of this paper is to investigate novel configurations of planar multiport radio-frequency (RF) microelectromechanical systems (MEMS) C-type and R-type switches and redundancy switch matrices for satellite communications. An in-house monolithic fabrication process dedicated to electrostatic multiport RF MEMS switches and switch matrices isâ€¦ (More)

- M. Soliman, E.M. Abdel-Rahman, E. F. El-Saadany, R. R. Mansour
- Journal of Microelectromechanical Systems
- 2009

We developed a design procedure for wideband electromagnetic micropower generators (WMPGs) based on piecewise-linear oscillators. We find that the dominant factors in the performance of this class of WMPGs are the stiffness ratio of the oscillator and the velocity of the moving structure at the point of impact with the stopper. We also find that designingâ€¦ (More)