A Low Flicker-Noise High Conversion Gain RF-CMOS Mixer with Differential Active Inductor

نویسندگان

  • M. A. Abdelghany
  • R. K. Pokharel
  • H. Kanaya
چکیده

The design of a low noise figure (NF), high conversion gain (CG) double-balanced, Gilbert-cell mixer is presented. Since the noise figure of the RF CMOS mixer is strongly affected by flicker noise (1/f), a dynamic current injection technique is used to reduce the flicker noise corner frequency. The current injection circuitry comprises 3 pMOS to inject current pulses at the switching instants. Differential active inductor (DAI) is employed to tune the tail capacitance at the node between the LO switches and the RF transconductance stages. Thus it reduces the RF leakage through this parasitic capacitance. The mixer is designed using TSMC 0.18 μm CMOS process. Simulations had been performed by Cadence Spectre® simulator. The proposed mixer has a conversion gain of 20dB, a 1-dB compression point of -19.3dBm, while the IIP3 is at 6.55dBm, with -30dBm RF input power. Single side band (SSB) noise figure is 13dB (@ 1MHz) with flicker noise corner frequency of 30KHz. Index Terms – CMOS, Gilbert-type mixer, direct conversion receiver, flicker-noise, differential active inductor.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

A 1.2-V RF Front-End With On-Chip VCO for PCS 1900 Direct Conversion Receiver in 0.13- m CMOS

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...

متن کامل

Design Analysis and Comparative Study of Rf Receiver Front-ends in 0.18-μm Cmos

In this work, design and simulation results of two RF front-ends to be used in direct conversion receiver are presented. The first one uses dual CS differential LNA with folded mixer. The second one uses single-ended LNA with double balanced mixer. Single-ended and fully differential LNA’s provide gains of 16.3 dB and 28.75 dB at 2.4GHz, respectively. Noise Figure of these two LNA’s are 3.34 dB...

متن کامل

A 2.4 GHz High Performance CMOS Sub-Harmonic Mixer

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...

متن کامل

24GHz CMOS direct downconversion receiver front-end and VCO design

The explosive growth of today's wireless communication market has brought an in­ creasing demand for high performance radio-frequency (RF) circuits in low-cost tech­ nologies. Because of advancements in RF CMOS circuits, devices, and passive elements in the last decade, it has become possible to develop a RF system-on-chip (SoC) that integrates RF, analog and digital circuits completely. Direct...

متن کامل

Analysis and Evaluation of Using a Tuning Inductance on the Performance of Gilbert Cell-Based CMOS Sub-Harmonic Mixer

Abstract: The effect of using a tuning inductance on the performance of a Gilbert cell-based two level transistor CMOS sub-harmonic mixer is investigated. The tuning inductor used between the RF and LO switching stages causes conversion gain enhancement and noise figure improvement. Additionally, it compensates LO distortion due to the phase mismatch of LO signals in the sub-harmonic mixer. The...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2009