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This paper presents the design, fabrication and characterization of capacitive type MEMS switch for space and terrestrial communication applications. The deviation in measured actuation voltage and RF response of the switches are discussed in terms of the process variation which occurred unintentionally during the fabrication of devices. For example the measured actuation voltage is 15 V, about 20%...
A dual mode quarter-cut dielectric resonator based 4-pole quasi chebyshev filter having a bandwidth of 24 MHz at C-band is designed and fabricated. Dual mode application of such a miniaturized resonator for the microwave filtering purpose is a very promising technique that results in the significant miniaturization in terms of weight and footprint of the filter. Realized filter shows almost 60% reduction...
This paper presents the design and implementation of a miniaturized dual band hybrid operating at two arbitrary frequencies. The hybrid is realised by adding quarter wavelength stubs to the conventional single section hybrid. The folded stub approach is used to miniaturize the size of this hybrid. The hybrid was designed and fabricated for S and C band with centre frequencies at 2.35 GHz and 4.6 GHz...
A new parameter extraction method for Direct-coupled resonator filters is presented. Matrix Rotation technique is used for extracting all the filter parameters (resonant frequencies of all resonators and coupling between adjacent resonators) from its reflection phase response. This method is capable of extracting accurate coupling and resonant frequencies of Direct-Coupled resonator filters. This...
A Method has been identified for the determination of the nature of coupling between individual dielectric resonators. It is based on electric field orientation in the dielectric resonator. The method is appropriate for the coupling identification in complex filter design topologies, such as filters involving finite number of transmission zeros. The suggested method is easy and direct to analyze the...
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