By Vojkan Vidojkovic, J. van der Tang, Arjan Leeuwenburgh, Arthur H.M. van Roermund
This ebook investigates ideas, advantages, boundaries, and prices linked to multi-standard operation of RF front-ends and their skill to evolve to variable radio environments. subsequent, it highlights the optimization of RF front-ends to permit greatest functionality inside a definite strength funds, whereas focusing on complete integration. ultimately, the ebook investigates percentages for low-voltage, low-power circuit topologies in CMOS expertise.
Read Online or Download Adaptive Multi-Standard RF Front-Ends (Analog Circuits and Signal Processing) PDF
Similar microwaves books
Engineers face stiff demanding situations in designing phase-locked loop (PLL) circuits for instant communications due to section noise and different hindrances. This sensible e-book involves the rescue with a confirmed PLL layout and optimization technique that we could designers check their suggestions, are expecting PLL habit, and improve low in cost PLLs that meet functionality necessities it doesn't matter what IC (integrated circuit) demanding situations they arrive up opposed to.
Oscillators are a massive part in contemporary RF and microwave structures, and practitioners within the box want to know the best way to layout oscillators for balance and most sensible functionality. supplying engineers broader insurance than different oscillator layout books out there, this accomplished source considers the whole frequency variety, from low-frequency audio oscillators to extra advanced oscillators came upon on the RF and microwave frequencies.
Scattering parameters or S-parameters (the components of a scattering matrix) describe behaviors of linear electric networks while present process a number of stimuli by means of electric indications. The parameters of the scattering matrix are hugely helpful to electric engineers concerned with microwave circuit and process layout.
Those ten volumes offer an outstanding, in-depth assessment of all nanomaterial forms and their makes use of within the lifestyles sciences. every one quantity is devoted to a selected fabric category and covers basics, synthesis recommendations, structure-property relationships, fabric behaviour finetuning, organic results and purposes within the lifestyles sciences.
- Microwave antenna theory and design
- Free-Space Laser Communications: Principles and Advances (Optical and Fiber Communications Reports)
- Stepped-Frequency Radar Sensors: Theory, Analysis and Design
- Microwaves and Metals
- Multiband RF Circuits and Techniques for Wireless Transmitters
Additional info for Adaptive Multi-Standard RF Front-Ends (Analog Circuits and Signal Processing)
18). As explained, due to the convolution between the signals Xi (located at the frequency −ωi ) and Xlop , a part of the image signal (Xip ) is down-converted in the band of the wanted signal (Xwd ) (see Fig. 11). 32)), and assuming that Alop can not be reduced (due to the limited accuracy of I/Q generation), there are two possibilities to improve IRRmax . To suppress the component of the image signal that is down-converted in the band of wanted signal (Xip (ω )) (see Fig. 11 (c)). Most often, image rejection improvement in this way is performed in the digital domain.
This is a right place in a front-end to introduce amplification, while adding as less noise as possible. 1. 6)). A low NF is important because once a SNR is degraded, it is almost impossible to improve it later. If a high IRRmax is of interest, then complex filter should be used as a next building block in a front-end. It rejects positive or negative frequencies in the RF signal spectrum. After that, the signal frequency should be reduced applying frequency down-conversion. It is performed by a complex mixer.
Next, signals are converted to the analog domain using a Digital to Analog Converter (DAC). At the end, signals are up-converted to a high frequency and they are amplified by a power amplifier. RF circuit design is a delicate process involving many time-consuming steps. In industry, whole design teams work on one radio. Therefore, it is important to limit the scope. Actually, some of the most challenging and key RF blocks can be found in the receiver RF front-end. The block diagram of an RF front-end is presented in Fig.
Adaptive Multi-Standard RF Front-Ends (Analog Circuits and Signal Processing) by Vojkan Vidojkovic, J. van der Tang, Arjan Leeuwenburgh, Arthur H.M. van Roermund