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MIXER DESIGN DEVELOPMENT TESTING


The basic configuration of a single mixer is that it has two inputs and one output. It multiplies or mixes the carrier signal, either RF or intermediate frequency (IF) depending on an up conversion or down conversion mixer, with another input from the local oscillator (LO). The LO signal input terminal is used to assist in the heterodyning process, produces the difference and sum frequencies of the two input terminals of interest.

Millimeter and submillimeter range mixer based on electronic heating of superconducting lms in the resistive state
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The conversion efficiency of a mixer obtained experimentally reaches 0.3 dB, the band amounts to 40 MHz, and the noise

Planar laminar mixer
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ABSTRACT Standard approaches to fluid mixing typically rely on turbulence, three- dimensional flows, or mechanical actuators, none of which can be easily implemented in the planar lithographic MEMS design environment. The authors present an approach to mixing In polymer-based nanocomposites, because of the large fraction of the nanoparticle atoms that reside at the interface, there would be a strong interface interaction between filler and polymer. The mechanical properties of nanocomposites would improve significantly at a low

Design of a sideband-separating balanced SIS mixer based on waveguide hybrids
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Abstract We describe a design for a sideband-separating balanced mixer using four planar single-ended mixer chips connected to the feed horn and LO source by a network of quadrature waveguide hybrids and an in-phase waveguide power divider. The mixer has

Lattice-Boltzmann and finite element simulations of fluid flow in a SMRX Static Mixer Reactor
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SUMMARY A detailed comparison between the finite element method (FEM) and the lattice- Boltzmann method (LBM) is presented. As a realistic test case, three-dimensional fluid flow simulations in an SMRX static mixer were performed. The SMRX static mixer is a piece of

Augmentation of tubeside laminar flow heat transfer by means of twisted-tape inserts, static- mixer inserts, and internally finned tubes
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ABSTRACT An experimental study of augmented heat transfer in horizontal tubes under laminar flow conditions has been carried out. Small-scale constant heat flux tests were conducted with two twisted-tape inserts, one internally finned tube, and two static- mixer

Resources for new research directions in speaker recognition: The Mixer 3, 4 and 5 corpora
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Abstract This paper describes new language resources designed to support research in speaker recognition. It begins with a brief overview of collections protocols, motivates the shift from the Switchboard protocol to the Mixer protocol, summarizes yields from the earliest

3D-camera of high 3D-frame rate, depth-resolution and background light elimination based on improved PMD (photonic mixer device)-technologies
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This contribution describes novel 3D camera modules used in Time-of-Flight measurement systems for 3D imaging applications. The key components are array and line sensors which can measure the distance to the target pixelwise in parallel, ie without scanning. Therefore

Design, optimization and comparison of permanent magnet motors for a low-speed direct-driven mixer
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Abstract Induction motors are commonly coupled to a gearbox when an application requires a low speed and a high torque. The gearbox is costly, needs maintenance and decreases the efficiency of the drive. Therefore, taking away the gearbox is very advantageous. This

Research on the rectangular lobed exhaust ejector/ mixer systems
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Abstract Experimental research of seven rectangular exhaust ejector/ mixer systems, which were the combinations of four rectangular lobed nozzles with three rectangular mixing tubes, has been conducted to investigate the effect of the geometry of rectangular lobed nozzles on

A practical Schottky mixer for 5 THz (Part II)
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Abstract A mixer using a GaAs Schottky diode in a corner reector mount has been built and used for astronomical observations near 5 THZ. A receiver noise temperature of 70,000 (DSB) was measured at 4.75 THZ with an ambient temperature mixer aboard NASAKuiper

The ALMA band 7 mixer
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IF band and covering the RF frequency range of 275 to 373 GHz has been developed and characterized for integration into the ALMA band 7 cartridge. The obtained results regarding noise as well as image rejection are well within the ALMA specifications. SSB noise

A fixed-tuned 400 GHz subharmonic mixer using planar schottky diodes
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Abstract The design and testing of a 400 GHZ xed-tuned subharrnonic mixer using antiparallel planar Schottky barrier diodes is presented. Fixed-tuned, two-sided waveguideto- microstrip transitions are used to couple power into a microstrip channel, in which the diode

Color Light mixer for every student
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Some light is transmitted through the ball wall because it is thin and not perfectly opaque. Therefore, the external appearance of the ball is the same color as the light illuminating the interior. If we put the glowing point LED source inside the Ping-Pong ball, the ball will

First results for a 2.5 THz Schottky diode waveguide mixer
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Abstract A Schottky diode mixer has been realised at 2.5 THz in a waveguide configuration. Measured RF performance is comparable to that obtained using the conventional corner reflector mount and the waveguide mixer has the added benefits of excellent beam

A novel magnetic chaotic mixer for in-flow mixing of magnetic beads
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ABSTRACT This paper presents a novel magnetic active mixer using magnetic microtips for active mixing of magnetic beads or biocells. Mixing is achieved by a combined rotational/vibrational force exerted on the magnetic beads as the magnetic microtips are AbstractA novel CMOS subharmonic mixing technique based on threshold voltage modulation with higher LO-to-RF isolation is presented in this paper. A 2.1 GHz subharmonic mixer is designed using this technique in a 0.18um standard digital CMOS MATERIALS AND METHODS In 1987, chlorpyrifos (Lorsban| 4E), carbaryl (Sevin| 80S) and permethrin (Pounce| 3.2 EC) were applied to corn at rates of 1.12, 1.68 and 0.22 kg active ingredient (AI) per ha, respectively. In 1988, chlorpyrifos (Lorsban| 4E) with and without crop

Analysis of the noise performance of a hot-electron superconducting bolometer mixer
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Abstract A theoretical analysis for the noise temperature of hotelectron superconducting mixer has been presented. The contributions of both Johnson noise and electron temperature fluctuations have been evaluated. A set of criteria ensuring low noise

Effects of mixer speed, dough temperature, and water absorption on flour-water mixograms
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ABSTRACT Effects of mixer rpm, dough temperature, and water absorption on mixing time and curve height of flour-water mixogram were studied by a response surface technique. Three flours with medium mixing requirements, but various protein contents, and a fourth

A fixed-tuned SIS mixer with ultra-wide-band IF and quantum-limited sensitivity for ALMA band 3 (84 116 GHz) receivers
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Abstract-This paper describes an 84-116 GHz Nb/Al-oxide/NbSIS mixer with multi-octave IF bandwidth and quantum-limited sensitivity. The mixer can be integrated with a three-stage 4- 12 GHz HFET preamplifier or fitted with a coaxial connector for operation with an external

Rigorous analysis of a superconducting hot-electron bolometer mixer : Theory and comparison with experiment
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Abstract We present theoretical analysis of the performance of a superconducting hot- electron bolometer mixer with electron cooling due to electron phonon interaction. The analysis is based on a complete set of thermal balance equations for phonons and

The ALMA band 6 (211 275 GHz) sideband-separating SIS mixerpreamplifier
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ABSTRACT The ALMA Band 6 (211-275 GHz) receivers use sideband-separating SIS mixer preamplifiers with dual 4-12 GHz IF outputs. The sideband-separating mixers are of the phasing type, with the LO driving two component mixers in-phase and the RF signal

Dont overlook static- mixer reactors
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Abstract Static mixers effectively handle a variety of difficult process situations in a compact configuration that is environmentally attractive and safe. A static mixing unit consists of a series of stationary, motionless guiding elements placed lengthwise in a pipe, duct or

On the use of an internal mixer for the rheological characterization of maize starch
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Abstract: The rheological behaviour of hydrated maize starch is investigated by means of a Haake internal mixer equipped with a sealed chamber. Results were obtained at temperatures between 89 and 115 C with water content between 25 and 30%. Through a

A single-chip balanced SIS mixer for 200 300 GHz
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ABSTRACT The balanced mixer is fabricated on a 2 x 1 mm quartz substrate which contains an RF quadrature hybrid and two SIS mixers. These components are realized in capacitively- loaded coplanar waveguide, which minimizes stray coupling between adjacent components Abstract A wideband image-rejection distributed resistive mixer configuration has been demonstrated. A 6-30GHz image-rejection mixer has been integrated onto a single GaAs MMIC chip and then packaged into a low cost 5x5mm surface mount (SMT) package. The

Gain bandwidth of phonon-cooled HEB mixer made of NbN thin film with MgO buffer layer on Si
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Abstract. We present recently obtained values for gain bandwidth of NbN HEB mixers for different substrates and film thicknesses and for MgO buffer layer on Si at LO frequency of 0.85-1 THz. The maximal bandwidth, 5.2 GHz, was achieved for the device on MgO buffer

Comparative evaluation of a two stroke compressed natural gas mixer design using simulation and experimental techniques
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ABSTRACT Compressed Natural Gas (CNG) is a viable alternative fuel that is able to reduce tailpipe emission, most notably in two stroke engines. The excessive by-products of twostroke engine combustion; normally due to inefficient combustion process is largely

Effect of surfactants on drop size distributions in a batch, rotor-stator mixer
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Surfactants are often required to stabilize liquid-liquid dispersions produced by rotor-stator mixers. Since drops are deformed rapidly due to the high power input of these devices, the dynamic interfacial properties governed by the surfactant adsorption rate have a significant

Characterisation of flow pattern in a rotor stator high shear mixer
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Abstract The flow in a rotor-stator high shear mixer (Silverson) at different rotor speeds have been simulated in Fluent using sliding mesh method with standard k-ε turbulence models and verified using LDA. The flow rate through the stator holes was directly proportional to

Investigation on the flow behaviour of a venturi type gas mixer designed for dual fuel diesel engines
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ABSTRACT The consumption of energy is increasing at staggering rate around the globe due to a rise in population and its standard of living. The energy is obtained from fossil fuels at the cost global warming. It results several harmful effects for both environmental and

Saturation of the SIS mixer
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Design of sideband separation SIS mixer for 3 mm band
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ABSTRACT As a part of Onsala development of a single sideband mixer for ALMA band 7 (275-370 GHz), we present the design of a prototype sideband separation mixer for 85-115 GHz. The mixer is designed using a quadrature scheme with two identical DSB SIS mixers

An epitrochoidal mixer
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Abstract This paper discusses a problem encountered in reducing the size of laboratory dough mixers. An approximate solution is initially derived to gain some understanding of the solution. Its solution is found by applying an iterative technique to a pair of non-linear

Investigation of a superconducting hot electron mixer
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ABSTRACT Mixing at 20 GHz in niobium superconducting thin film strips in the resistive state is studied. Experiments give evidence that electron-heating is the main cause of the non linear phenomena. The requirements on the mode of operation and on the film

Better absorption Try a static mixer
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Abstract Static mixers are making their mark in what may appear to be unlikely roles: gas absorption and scrubbing. Being cocurrent-flow devices, these mixers are particularly cost- effective in situations that require only a few transfer stages, and in situations where the

A study of streamwise vortex enhanced mixing in lobed mixer devices
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Abstract The effect of shed streamwise vorticity on mixing in a lobed mixer device has been examined computationally and experimentally. Computational models for assessing the mixing augmentation due to shed streamwise vorticity in laminar and turbulent flows have

A mixer viscometry approach to use vane tools as steady shear rheological attachments
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ABSTRACT A mixer viscometry procedure, coined the Matching Stress Method, was developed to use four-bladed vanes devices in applications requiring steady shear measurements. Based on the concept that vane tools shear fluids in a cylindrical pattern

A 380 GHz sub-harmonic mixer using MMIC foundry based Schottky diodes transferred onto quartz substrate
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AbstractIn this paper, we report upon the development of a 380 GHz sub-harmonic mixer using foundry planar Schottky diodes. The device has been fabricated by the commercial foundry UMS (United Monolithic Semiconductors) using the BES process, and post-

Quantum limited responsivity of a Nb/Al203/Nb SIS waveguide mixer at 460 GHz and first results at 750 and 840 GHz
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The noise and gain behaviour of a Nb/Al203/1Vb SIS waveguide mixer with a on chip integrated tuning element, is analyzed at 460 GHz. The receiver sensitivity of the whole system, including the beamsplitter, window and lenses is 116 K DSB. The mixer noise

Mixer basics primer
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Microwave mixers translate the frequency of electromagnetic signals. This functionality is vital for an enormous number of applications ranging from military radar and surveillance to radio astronomy to biological sensing. Despite their ubiquity, however, microwave frequency

3D DEM simulations of a high shear mixer
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ABSTRACT Mixing of granular materials at high shear rates is poorly understood. The particle trajectories are non-trivial due to recirculation regions resulting from the use of mixing impellers. These regions can greatly influence the segregation and mixing of

Free radical grafting of styrene onto polyethylene in intensive mixer
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ABSTRACT: The graft copolymerization of styrene onto low density polyethylene (LDPE) with dicumyl peroxide as an initiator was studied. The existence of the graft copolymer was verified by infrared spectra. The effects of the initiator concentration, the feed composition,

Computerizing the steps of mixer selection
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Abstract Computers offer the capability of storing an enormous amount of knowledge pertinent to the performance of a specialized task. Computers can be programmed to apply the rules of reasoning to the chunks of expert knowledge codified and stored for round-the-

Common-source phase error of a dual- mixer stability analyzer
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The conceptual design of a dual- mixer stability analyzer for the Deep Space Network is described. A bound for the mean-square common-source phase error is given as a function of the power spectrum of the offset source and the response of the lowpass mixing filter. A

Cryptographic protocols of the identity mixer library
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In cryptography, a certificate is a list of information about the certificate holder which is signed by a trusted authority. The process of obtaining a certificate is called issuing, therefore the authority is referred to as the issuer. The recipient of the certificate in this

Piloted evaluation of a UH-60 mixer equivalent turbulence simulation model
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Abstract A simulation study of a recently developed hover/low speed Mixer Equivalent Turbulence Simulation (METS) model for the UH-60 Black Hawk helicopter was conducted in the NASA Ames Research Center Vertical Motion Simulator (VMS). The experiment was a

Design and Development of a Pedal-powered Soap Mixer
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Abstract A bicycle pedal-powered soap mixer has been design and developed. The machine consists of a chain drive and gear amplification mechanisms that turns impeller blades in a large stainless steel container, where soap ingredients are stirred and blended.

Measurements with a diffusion-cooled Nb hot-electron bolometer mixer at 1100 GHz
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Abstract-In this paper we report receiver sensitivity measurements with a diffusion-cooled niobium hot-electron bolometer around 1100 GHZ. The lowest receiver noise temperature was 1670 K DSB, with approximately 40 nW of local oscillator power being dissipated in the

230 GHz SSB SIS mixer for band 3 of the new generation receivers for the Plateau de Bure interferometer
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AbstractA single sideband SIS mixer with a 4-8 GHz IF band and covering the RF frequency range of 200 to 265 GHz has been developed and characterized. This mixer will be integrated into band 3 of the new generation receivers for the Plateau de Bure

Oscillator mixer for chemical microreactors
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ABSTRACT A novel fluidic oscillator has been developed and tested. Visualization of the oscillation phenomenon at low Reynolds number Re is presented as an animation sequence. It shows alternating thin layers of the two fluids generated in the device exit. The

350 GHz NbN hot electron bolometer mixer
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ABSTRACT Superconducting NbN hot-electron bolometer (HEB) mixer devices have been fabricated and measured at 350 GHz. The HEB is integrated with a double dipole antenna on an extended crystalline quartz hyper hemispherical substrate lens. Heterodyne

First wideband 520 590 GHz balanced fundamental Schottky mixer
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AbstractWe report on the design and performance of a novel broadband, biasable, balanced fundamental 520-590 GHz fix-tuned frequency mixer that utilizes planar Schottky diodes. The suspended stripline circuit is fabricated on a GaAs membrane mounted in a split

A 2. 4 GHz Low Power Highly Linear Mixer for Direct-Conversion Receivers
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Abstract:-In this paper, a 2.4 GHz low power down-conversion mixer with high linearity for direct-conversion receivers based on a standard 0.18 um CMOS technology is proposed. In the circuit design, Gilbert cell architecture and Common-Gate configuration are used. A

Design of 129-174 GHz SSB SIS mixer for band 2 of new generation receiver of IRAM PdB interferometer
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Abstract We present the design of a Single Side Band (SSB) SIS mixer covering the band 129-174GHz. A reactive termination is used to reject the image sideband. We discuss the problems posed by the requirements of SSB operation, stability, wide IF band (3.85-7.85

A new SIS mixer for the 2-mm band
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ABSTRACT This paper describes a tunable SIS mixer for the (non-standard) 124-190 GHz waveguide band. The mixer uses a series array of Nb/Al-A1203/Nb junctions in a suspended stripline on a quartz substrate. At each end of the substrate, the stripline is

600 GHz heterodyne mixer in waveguide technology using a GaAs Schottky diode
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AbstractIn this paper we will present first measurement results for a fixed tuned 600 GHz heterodyne mixer in split-block waveguide technology. The presented mixer design is based on a single planar GaAs Schottky diode which is flip-chip mounted on a quartz substrate.

An integrated IQ mixer for software-defined radio applications
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The software defined radio takes advantage of digital signal processing to move channel filtering, interference suppression, automatic gain control, modulation and demodulation from hardware into software. As shown in Figure 1, the block diagram for a software defined

ELECTRONICS COMPONENTS SALES AND SERVICE-INTEGRATED CIRCUIT-ANALOG, DIGITAL, DSP, RF IC, WIRLESS IC, VLSI, CAPACITOR, RESISTOR, INDUCTOR, PCB, MODULE, SENSOR