نتایج جستجو برای: (IM3) Distortion cancellation

تعداد نتایج: 53425  

2001
Mark P. van der Heijden Henk C. de Graaff Leo C. N. de Vreede

Abstrac—Second-harmonic control is implemented in a balanced common-emitter configuration to facilitate frequency independent third–order intermodulation distortion (IM3) cancellation. Experiments demonstrated an over 15 dB improvement in the output third-order intercept point (OIP3).

2012
Edward A. Keehr Juhwan Yoo Hua Wang Yu-Jiu Wang Sanggeun Jeon Shouhei Kousai Aydin Babakhani

In this dissertation, two effective linearization schemes for radio-frequency receivers are introduced. The first of these comprises a mixed-signal feedforward path which regenerates third-order intermodulation (IM3) products at radio frequencies, downconverts these products, digitizes them, and then uses them to cancel corruptive IM3 products in the digital baseband portion of a nominally line...

Journal: :J. Solid-State Circuits 2013
Wei Cheng Mark S. Oude Alink Anne-Johan Annema Gerard Wienk Bram Nauta

A wideband IM3 cancellation technique for CMOS attenuators is presented. With proper transistor width ratios, the dominant distortion currents of transistor switches cancel each other. As a result, a high IIP3 robust to PVT variations can be achieved without using large transistors. Two prototypes in a 0.16 μm standard bulk CMOS process are presented: a Πattenuator with four discrete settings o...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس 1389

growing demands and requires of high data rate systems cause significant increase of high frequency systems for wideband communication applications. as mixers are one of the main blocks of each receivers and its performance has great impact on receiver’s performance; in this thesis, a new solution for ku-band (12-18 ghz) mixer design in tsmc 0.18 µm is presented. this mixer has high linearity a...

2000
K. Buisman L. C. N. de Vreede L. E. Larson M. Spirito A. Akhnoukh L. K. Nanver

Varactor diode-based circuit topologies, which can act as high-Q “distortion-free” tunable capacitive elements, are presented. These diodes are implemented in a novel ultra low-loss silicon-on-glass technology, with resulting measured Q's of over 200 at 2 GHz. The measured IM3 improvement compared to traditional single varactor tuning techniques is greater than 30 dB. Index Terms — Distortion, ...

2003
A. Singh J. G. Wöhlbier J. E. Scharer J. H. Booske I. Dobson

Traveling Wave Tube (TWT) amplifiers, used in communication and ECM applications for their high power output, are nonlinear devices. This leads to harmonic and intermodulation distortion in the output spectrum which compromises the device performance. In communication systems, intermodulation products (IMPs) lead to adjacent channel interference while in ECM applications, harmonic generation ad...

This paper presents an improved linearity variable-gain amplifier (VGA) in 0.18-µm CMOS technology. The lineari­ty improvement is resulted from employing a new combinational technique, which utilizes third-order-intermodulation (IM3) cancellation mechanism using second-order-intermodul­ation (­IM2) injection, and intermodulation distortion (IMD) sinking techniques. The proposed VGA gain cell co...

2015
Barend van Liempd Benjamin P. Hershberg Björn Debaillie Piet Wambacq Jan Craninckx

When using electrical-balance duplexers (EBDs) to provide RF self-interference cancellation for in-band full-duplex, in-band distortion produced by nonlinear CMOS switches in the duplexer cause distortion that limits the headroom for additional self-interference cancellation in subsequent cancellation schemes in the transceiver. A prototype EBD is fabricated in 0.18μm SOI CMOS to investigate th...

This paper presents a new ultra-wideband LNA which employs the complementary derivative superposition method in noise cancellation structure. A pMOS transistor in weak inversion region is employed for simultaneous second- and third-order distortion cancellation. Source-degeneration technique and two shunt inductors are added to improve the performance at high frequencies. The degeneration induc...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید