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Journal ArticleDOI

A low voltage actuated micromachined microwave switch using torsion springs and leverage

Dooyoung Hah, +2 more
- Vol. 48, Iss: 12, pp 2540-2545
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TLDR
In this article, a push-pull type microwave switch is proposed, which utilizes torsion springs and leverage for lowvoltage operation, and the actuation voltage is /spl sim/5 V.
Abstract
In this paper, a push-pull type microwave switch is proposed, which utilizes torsion springs and leverage for low-voltage operation. The switching operation up to 4 GHz is demonstrated. The actuation voltage is /spl sim/5 V. The insertion loss of /spl sim/1 dB and the isolation as high as /spl sim/40 dB at 1 GHz are achieved by the push-pull operation.

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Citations
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Journal ArticleDOI

MEMS for wireless communications: 'from RF-MEMS components to RF-MEMS-SiP'

TL;DR: In this article, the progress in RF-MEMS from a device and integration perspective is reviewed, and the worldwide state-of-the-art of RFMEMS devices including switches, variable capacitors, resonators and filters are described.
Journal ArticleDOI

Fundamental studies of Au contacts in MEMS RF switches

TL;DR: In this article, the effects of contact force and electric current on contact resistance (R), microadhesion, and reliability/durability of hot-switched gold (Au) contacts were conducted using a micro/nanoadhesion apparatus as a switch simulator.
Journal ArticleDOI

Application of piezoelectric layers in electrostatic MEM actuators: controlling of pull-in voltage

TL;DR: In this article, a method has been developed to control the pull-in voltage of the fixed-fixed and cantilever MEM actuators and measure the residual stress in the fixed fixed model using of the piezoelectric layers that have been located on the upper and lower surfaces of actuator.
Patent

Construction structures and manufacturing processes for integrated circuit wafer probe card assemblies

Sammy Mok, +1 more
TL;DR: In this paper, integrated circuit probe card assemblies are disclosed, which extend the mechanical compliance of both MEMS and thin-film fabricated probes, such that these types of spring probe structures can be used to test one or more integrated circuits on a semiconductor wafer.
Patent

Systems for testing and packaging integrated circuits

TL;DR: In this article, a plurality of stress metal layers are established on a substrate, which are then controllably patterned and partially released from the substrate, defining a looped spring structure, providing high pitch compliant electrical contacts for a wide variety of interconnection systems.
References
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Journal ArticleDOI

Performance of low-loss RF MEMS capacitive switches

TL;DR: In this paper, the construction and performance of metal membrane radio frequency MEMS switches at microwave and millimeter-wave frequencies was described. But the authors focused on the performance of the switches in terms of on-off capacitance ratio.
Proceedings ArticleDOI

A Surface Micromachined Miniature Switch For Telecommunications Applications With Signal Frequencies From DC Up To 4 Ghz

TL;DR: In this paper, a surface micromachined miniature switch has been made on a semi-insulating GaAs substrate using a suspended silicon dioxide micro-beam as the cantilevered arm, a platinum-to-gold electrical contact, and electrostatic actuation as the switching mechanism.
Proceedings ArticleDOI

Characteristics of micromachined switches at microwave frequencies

TL;DR: In this paper, the fundamental characteristics of micromechanical membrane switches operating at microwave frequencies are discussed and the construction and theory of operation of capacitive membrane switches is reviewed. And the inherent advantages of these switches relative to semiconductor switches are discussed.
Proceedings ArticleDOI

Micromachined microwave actuator (MIMAC) technology-a new tuning approach for microwave integrated circuits

TL;DR: In this paper, the authors describe an approach to the realization of tunable/variable III-V planar microwave integrated circuits, which uses micromachined electrostatically controlled actuator technology.
Proceedings ArticleDOI

Micromechanical electrostatic K-band switches

TL;DR: In this paper, two novel designs of micromechanical capacitive switches using serpentine and cantilever springs for low actuation voltage applications are reported, which also incorporate an electrode situated above the switching structure in order to provide system stability.
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