multi-band frequency operation
1. Theoretical and experimental investigation on a compact multi-band frequency selective surface
... as band-pass filter ...of multi functional wireless communication devices, more complicated FSS designs capable of operating in multiple frequency bands are being proposed ...obtain ...
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Biomimetic MEMS directional microphone structures for multi-band operation
... narrow frequency band around the resonance frequency of the rocking mode by establishing a relationship between the sound azimuth angle and vibration intensity of the ...
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WIDE BAND FRACTAL ANTENNA WITH INSET FEED ON EBG GP Patrika Jayanti 1, Gagan Minocha2 , Lala Bhaskar 3
... for multi-band and broad band in high data rate systems known as wideband communication ...wide band frequency operation is ...
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Simulation-Driven Design for a Hybrid Lumped and Distributed Dual-Band Stub Using Input and Output Space Mapping
... or multi-band microwave components, such as impedance transformers, power dividers, hybrid couplers, filters, and ...of multi-band ...design multi-band couplers, power splitters ...
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A Multiband Four-Antenna System for the Mobile Phones Applications
... the multi-antenna mobile terminals published operate only at relatively high frequency band, such as at ...MIMO operation, two LTE antennas are designed to be used in the mobile communication ...
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Frequency and Pattern Reconfigured Multi Band CPW Antenna for Wimax and X Band Applications
... like multi-mode feeding techniques for parabolic antennas, alternating projection approaches and stochastic optimization ...dual band notch functionalities for WIMAX and HIPERLAN ...change frequency, ...
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A Multi Band Holey Based EBG Resonator Antenna for Performance Enhancement in UHF Band Frequency Range
... The configuration of different antennas are presented which has different bands of operation shown in fig. 3. Its design has been inspired by Mushroom type EBG (MEBG) patch antenna with [1], [3], [5], [25], and ...
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Variode Enabled Frequency-Reconfigurable Microstrip Patch Antenna with Operation Band Covering S and C Bands
... Various frequency reconfigurable microstrip patch antennas have been reported previously, because they feature miniaturization, ease of manufacture, and fast response [22, ...resonant frequency can be ...
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Multi-Band Rectangular Microstrip Antenna Using a Metamaterial-Inspired Technique
... and multi- band antenna design has received great attention from both academic and commercial areas, due to the need for multi-band operation and reduced size ...require ...
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Design And Analysis Of High Gain 2x1, 4x1, 8x1 And 8x8 Circular Patch Antenna Arrays For 2.4ghz Applications
... high frequency eight -antenna multi-input multi output (MIMO) cluster working within the ...required operation transfer speed The crest ergodic channel capacity within the 8x8 MIMO plot(with a ...
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Optical wireless communications utilizing a dicode PPM PIN BJT receiver
... A new type of stacked meander-chip antenna using LTCC multi- layer technology for dual-band operation with dimensions of 9 ⫻ 15 ⫻ 1.2 mm has been proposed. By changing the vertical and horizontal ...
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Development of triple band planar inverted f antenna (pifa) for gsm 800 mhz, dcs 1800 mhz and bluetooth 2400 mhz
... arrays of radio frequency circuits, to make them ideal components of modern communications systems. Planar antennas have variety of types and one of them is planar inverted F antenna (PIFA). Planar Inverted-F ...
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Direct torque control induction motor drives
... The DTC principle was introduce in the late 1980s [8]. In contrast to vector control which became accepted by drive manufacturer after 20 years of extensive research. A direct torque controlled induction motor drive has ...
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REDUCTION OF PAPR IN OFDM SYSTEM USING REPEATED CLIPPING AND FILTERING TECHNIQUE WITH DIFFERENT MODULATION SCHEMES
... radio frequency (RF) power ...and frequency domain filtering to avoid peak ...different frequency component which are base band modulated symbols and apply interpolation to these symbols by ...
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Recent Development Results in Russia of Megawatt Power Gyrotrons for Plasma Fusion Installations
... Detail analysis of the test results showed that a slightly modified ITER gyrotron prototype is capable to operate at power 1.2 MW. First tests of the modified tube are rather encouraging: microwave power 1.2 MW at MOU ...
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A Novel Technique to Design UWB Patch Antenna for Multi-Band Operation at Multi-Resonance Frequencies by Using DGS/DMS
... a multi-band notch antenna radiationg at different frequencies is ...stop band. The propsed antenna is radiated at multiband band of frequencies with variable ...First band is from 2.7 ...
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Novel Compact Four port Ultra wideband (UWB) MIMO Antenna Using Cross Structure
... The rectangular patch with two slots connecting to the transmission line on the top of the antenna acts as radiation resonator to cover UWB frequency range. The four antenna units are placed perpendicularly to ...
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Design and Implementation of Digital Filters for Mobile Healthcare Applications
... The impulse response of the designed FIR filter is always stable but it requires a large memory space to store the filter coefficients due to the high order. The number of filter coefficients can be lessened if the ...
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System Model of Underground UWB Based on MB OFDM
... loss, multi- path delay and different channels power attenuation of mine roadway, it need to model a UWB system that can be a true reflection of propagation characteristics of UWB signal under the ...
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An Advanced Multi Band Acousto Optical Radio Wave Spectrometer with Multi Channel Frequency Processing for Astrophysical Studies
... The beam shaper included a variable optical attenuator, a Glan-Taylor linear pola- rizer, and a specially designed 4-prism beam expander for achieving the apodization by the tunable Gaussian profile. During its ...
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