Continuous-Time Digital Front-Ends for Multistandard by Pieter A. J. Nuyts, Patrick Reynaert, Wim Dehaene

By Pieter A. J. Nuyts, Patrick Reynaert, Wim Dehaene

This booklet describes the layout of absolutely electronic multistandard transmitter front-ends that can without delay force a number of switching energy amplifiers, therefore removing all different analog elements. After reviewing varied architectures, the authors concentrate on polar architectures utilizing pulse width modulation (PWM), that are completely according to unclocked hold up strains and different continuous-time electronic undefined. hence, readers are enabled to shift accuracy matters from the voltage area to the time area, to coincide with submicron CMOS expertise scaling. The authors current assorted architectural suggestions and examine them, according to their impact at the sign and spectrum caliber. subsequent, a high-level theoretical research of 2 diverse PWM-based architectures – baseband PWM and RF PWM – is made. at the circuit point, conventional electronic elements and layout innovations are revisited from the viewpoint of continuous-time electronic circuits. very important layout standards are pointed out and varied strategies are provided, in addition to their benefits and drawbacks. eventually, chips designed in nanometer CMOS applied sciences are defined, besides dimension effects for validation.

Show description

Read or Download Continuous-Time Digital Front-Ends for Multistandard Wireless Transmission PDF

Best circuits books

Liquid Crystal Displays: Fundamental Physics and Technology (Wiley Series in Display Technology)

An remarkable investigate the fundamental physics, chemistry, and expertise at the back of the LCDMost particularly used for laptop monitors, televisions, and cellphones, LCDs (liquid crystal screens) are a pervasive and more and more essential a part of our lives. supplying either an historic and a business-minded context, this broad source describes the original clinical and engineering ideas used to create those appealing, smart, and eminently beneficial units.

Electronic and Photonic Circuits and Devices (Ieee Press Series on Microelectronic Systems)

Digital and Photonic Circuits and units brings you a worthy assessment of either the present perform of circuits and units in addition to the most recent layout pattern towards photonics expertise. in a single handy resource, those chosen papers reprinted from the IEEE Circuits and units journal current the $64000 suggestions at the back of destiny units and the most probably course of optoelectronics within the subsequent twenty-five years.

Power Trade-Offs and Low-Power in Analog CMOS ICs

The big upward thrust of electronic functions within the final 20 years arouses the advice that analog innovations will lose their value. besides the fact that in purposes that paintings with electronic indications analog thoughts are nonetheless extremely important for a couple of purposes. First the sign that needs to be processed or kept will be analog on the enter and output of the process.

ESD testing: from components to systems

With the evolution of semiconductor expertise and international diversification of the semiconductor company, trying out of semiconductor units to platforms for electrostatic discharge (ESD) and electric overstress (EOS) has elevated in significance. ESD trying out: From parts to platforms updates the reader within the new exams, try types, and methods within the characterization of semiconductor elements for ESD, EOS, and latchup.

Extra resources for Continuous-Time Digital Front-Ends for Multistandard Wireless Transmission

Sample text

G. be a processor with DSP software. In this case, the signal that goes to the PA is entirely determined by software, and there is even more flexibility to add new standards after the circuit has been produced. This type of transmitter is called software radio (SR). 1 Situation and Motivation Data 9 DSP Front-End PA BPF Fig. 6 Fully digital reconfigurable multistandard transmitter Data DSP PA BPF Fig. 7 Software radio transmitter would also be incorporated in the digital block and replaced with a DAC.

8 illustrates several ways of representing signals. 8a shows a continuous-time analog signal x(t) (also known simply as an analog signal), which is a continuous function of time: At each instant t, the signal has a certain value x(t), which is most often a voltage or current. This value can change at any moment and it can have any value within a continuous range. e. limited to a discrete set of values. 8b shows a continuous-time digital signal, which results from quantizing the analog signal to a limited set of quantization levels.

3 Modulator Types This section presents the three main types of RF modulators, which differ in the way they represent the complex envelope using real signals and the way they convert this to the desired RF signal. These types are the quadrature modulator (Sect. 1), the polar modulator (Sect. 2), and the outphasing modulator (Sect. 3). 7): It has two input signals i(t) and q(t), both in the range [−1, 1], which are multiplied with two versions of the RF carrier that are 90◦ out of phase, and then summed, as shown in Fig.

Download PDF sample

Rated 4.06 of 5 – based on 40 votes

Related posts