A double balanced Gilbert-cell class-A amplifier bleeding mixer (DBGC CAAB mixer) is proposed and implemented. The injection current is utilized to amplify the local oscillator (LO) signal to improve the performance of the transconductor stage. The DBGC CAAB mixer achieves a conversion gain of 17.5 dB at −14 dBm LO power, and the noise figure is suppressed from 45 dB to 10.7 dB. It is important...

In this paper a low power CMOS sub-harmonic mixer based on the Gilbert cell for 2.4 GHz ISM band application is presented, in which the position of the switching and transconductance stages of mixer has been exchanged. A tuning out inductor has been used between the RF and LO switching stages to improve the linearity and noise figure, and also to enhance the conversion gain of the Mixer. The ut...

An ultra-wideband mixer using standard complementery metal oxide semiconductor (CMOS) technology was first proposed in this paper. This broadband mixer achieves measured conversion gain of 11 1 5 dB with a bandwidth of 0.3 to 25 GHz. The mixer was fabricated in a commercial 0.18m CMOS technology and demonstrated the highest frequency and bandwidth of operation. It also presented better gain-ban...

Identity Mixer is an anonymous credential system developed at IBM that allows users for instance to prove that they are over 18 years old without revealing their name and birthdate. This privacy-friendly technology is realized using zero-knowledge proofs. We describe a formal model of Identity Mixer that is well-suited for automated protocol verification tools in the spirit of black-box cryptog...

A 1.9 GHz (RF) down conversion mixer has been designed in a standard 0.25μ CMOS process. The local oscillator (LO) frequency is at 1.85 GHz. The mixer provides a voltage gain of 2.133 dB while drawing a current of 5.2 mA from a 2.5 V supply. The IIP3 of the mixer is 5.123 dBm and the -1dB compression is at -5.83 dBm. Detailed design process and simulation results are presented in this report.

An experimental study of a balanced mixer based on 2A116A-1 diodes was carried out.Conversion losses were measured in the input frequency range 2450 ± 45 MHz during downconversion to an intermediate 2125 MHz. Conversion loss does not exceed 20 dB anarrow band 2440±10 The amplitude characteristic taken, from which itcan be seen that it is linear for signals up 0 dBm (1 mW). dependence conversion...

In this paper, a 1.2-V RF front-end realized for the personal communications services (PCS) direct conversion receiver is presented. The RF front-end comprises a low-noise amplifier (LNA), quadrature mixers, and active RC low-pass filters with gain control. Quadrature local oscillator (LO) signals are generated on chip by a double-frequency voltage-controlled oscillator (VCO) and frequency divi...