This paper presents a starting study of carbon nanotube usefulness in microwave applications, mainly in the field of
nano-antenna and nano-switches. We reviewed first the main structural, mechanical, thermal and electrical properties of
carbon nanotubes. Then we started studying the possibilities offered by metallic carbon nanotubes as nano-antennas in
the E- and W- bands and further comparison with macroscopic wire antennas and the major advantages brought by
nanotubes but also the technical issues to be addressed. Finally we are looking into the integration of carbon nanotubes
in nano-electro-mechanical-systems (NEMS) through nano-switches. The contribution of carbon nanotubes is detailed
with a state-of-the-art as well as our future approaches for such nano devices.
RF MEMS switches provide a low-cost, high performance solution for many RF/microwave applications these
switches will be important building blocks for designing phase shifters, switched filters reflector array antennas
for military and commercial markets.
In this paper, progress in characterizing of THALES capacitive MEMS devices under high RF power is
presented. The design, fabrication and testing of capacitive RF MEMS switches for microwave/mm- wave
applications on high-resistivity silicon substrate is presented. The switches tested demonstrated power handling
capabilities of 1W (30 dBm) for continuous RF power. The reliability of these switches was tested at various
power levels indicating that under continuous RF power. In addition a description of the power failures and their
associated operating conditions is presented.
The PC-based test stations to cycle switches and measure lifetime under DC and RF loads have been developed.
Best-case lifetimes of 1010 cycles have been achieved in several switches from different lots under 30 dbm RF
power.
RF MEMS switches provide a low-cost, high performance solution for many RF/microwave applications these
switches will be important building blocks for designing phase shifters, switched filters reflector array antennas
for military and commercial markets.
In this paper, progress in characterizing of THALES capacitive MEMS devices under high RF power is
presented. The design, fabrication and testing of capacitive RF MEMS switches for microwave/mm- wave
applications on high-resistivity silicon substrate is presented. The switches tested demonstrated power handling
capabilities of 2W (33 dBm) for continuous RF power. The reliability of these switches was tested at various
power levels indicating that under continuous RF power. In addition a description of the power failures and their
associated operating conditions is presented
The PC-based test stations to cycle switches and measure lifetime under DC and RF loads have been developed.
Best-case lifetimes of 5x1010 cycles have been achieved in several switches from different lots under 33 dbm RF
power.
RF MEMS switches provide a low-cost, high performance solution to many RF/microwave applications and these switches will be important building blocks for designing phase shifters, switched filters and reflector array antennas for military and commercial markets.
In this paper, progress in characterizing of THALES capacitive MEMS devices under high RF power is presented. The design, fabrication and testing of capacitive RF MEMS switches for microwave/mm- wave applications on high-resistivity silicon substrate is presented. The switches tested demonstrated power handling capabilities of 1W (30 dbm) for continuous RF power. The reliability of these switches was tested at various power levels indicating that under continuous RF power. In addition a description of the power failures and their associated operating conditions is presented. The PC-based test stations to cycle switches and measure lifetime under DC and RF loads have been developed. Best-case lifetimes of 1010 cycles have been achieved in several switches from different lots under 30 dbm RF power.
RF MEMS switches provide a low-cost, high performance solution to many RF/microwave applications and these switches will be important building blocks for designing phase shifters, switched filters and reflector array antennas for military and commercial markets. In this paper, progress in characterizing of THALES capacitive MEMS devices under high RF power is presented. The design, fabrication and testing of capacitive RF MEMS switches for microwave/mm- wave applications on high-resistivity silicon substrate is presented. The switches tested demonstrated power handling capabilities of 1W (30 dbm) for continuous RF power. The reliability of these switches was tested at various power levels indicating that under continuous RF power. In addition a description of the power failures and their associated operating conditions is presented. The PC-based test stations to cycle switches and measure lifetime under DC and RF loads have been developed. Best-case lifetimes of 1010 cycles have been achieved in several switches from different lots under 30 dbm RF power.
This paper presents the design, fabrication and testing of capacitive
RF MEMS switches for microwave/mm- wave applications on high-resistivity silicon substrate or glass. The feasibility study and demonstrator fabrication of a new concept of reflector network using MEMS switch based phase-shifters concept for space antennas is presented. These switches can be accurately modeled using 3-D static solvers. The loss in the up-state position is equivalent to the CPW line loss and is 0.1-0.3 dB at 10-40 GHz. It is seen that the capacitance, inductance and series resistance can be accurately extracted from DC-40 GHz S-parameter measurements. The reflector array antennas utilization for phase control avoids the use of very expensive directive antennas and covers a very large frequencies range. We will deal with the configuration, the composition and
arrangement of MEMS switches, used to control the phase shift of the electromagnetic wave reflected by each elementary cell.
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