This paper describes a 1.5-V 5 GHz I/Q down conversion mixer in a 0.18-μm CMOS process. The mixer achieves a conversion gain of 12.7 dB within 1-dB compression point (iCP1dB) of -15.83 dBm. It also achieves a double side band (DSB) NF of 13.5 dB. The mixer's IIP3 is -5.94 dBm. The mixer consumes only 5.72 mA of current from a 1.5-V power supply. Key-Words: Analog RF-CMOS, IEEE 802.11a, IEEE 802...

This paper investigates the transient behavior of a novel design an industrial mixer incorporating additional work head movement. In contrast to conventional models, this consists elastic torsion bar with its longitudinal axis oriented orthogonally main drive shaft axis. Using hang workhead adds degree freedom, greatly improving mixing fluids or powders. The motion electro-mechanical device was...

• 3D CFD simulations were conducted to study the flow through SMX+ mixers in series. Flow characteristics become repetitive from second element onwards. High dispersive mixing takes place entrance region of each element. The successive rotation gives rise a rotational downstream. Downstream, core spirals on its axis and outer part spins orthogonal motion. A numerical investigation an mixer was ...

Abstract This paper describes a new switching topology of a sampling mixer for SAW-less GPS (L1 band) receivers. The GPS receiver with the new mixer achieved NF 2.5dB and good blocking performance. In an alternative implementation, the mixer is stacked under a Quadrature VCO to reuse supply current. As a result, the current consumption of the GPS receiver is 11mA from 1.8V supply while maintain...

A linearity improvement technique for a common-source transconductance stage is proposed. The proposed technique requires an additional MIM capacitor located in parallel with the intrinsic gate-source capacitor of a transistor. The origin of the linearity improvement is explained and the proposed technique is applied to a down-conversion mixer. From the simulation, the down-conversion mixer tha...

The impedance of the superconducting hot-electron bolometer mixer was measured in the range 0.2-4 GHz. A special technique relying on determination of the Sz, transmission parameter of the device was used. Many advantages of the technique (wide frequency range, in situ calibration, low test power, accuracy) are demonstrated. The estimate of the mixer bandwidth from the impedance data using the ...

In this paper, we describe the design, fabrication, and the performance of a low-noise dual-polarized quasi-optical superconductor–insulator–superconductor (SIS) mixer at 550 GHz. The mixer utilizes a novel cross-slot antenna on a hyperhemispherical substrate lens, two junction tuning circuits, niobium trilayer junctions, and an IF circuit containing a lumped element 180 hybrid. The antenna con...

The Atacama Large Millimeter Array (ALMA) requires low noise SIS receivers for frequencies from about 80 GHz to 950 GHz with a very large IF bandwidth (8 GHz SSB upper or lower sideband, 8 GHz DSB or 4 GHz dual sideband, upper and lower sideband). Since there will be a large number of antennas in the array (currently 64), additional requirements such as high reliability, low cost, and the produ...

In the nuclear industry, mixed oxide fuel pellets are manufactured by powder metallurgy process. This work aims at improving physical and flow properties of powders in order to obtain a reproducible die filling produce homogeneous dense after sintering. The studied was grinded mixture UO2 sintered scraps (recycled). Two conditioning methods were tested compared: V-blender an oscillating rotatin...