H. J. De Los Santos et al., Radio Systems Engineering, DOI 10.1007/978-3-319-07326-2_2, © The Authors 2015 Abstract In this chapter, we present a number of topics surrounding modulation and demodulation. We begin by introducing system-level block diagrams of AM and FM/PM modulators and demodulators, and explaining their respective principles of operation. In particular, under the topic of AM Mo...

One procedure widely used to detect the velocity of a moving object is by using the Doppler effect. This is the perceived change in frequency of a wave caused by the relative motion between the emitter and the detector, or between the detector and a reflecting target. The relative movement, in turn, generates a time-varying phase which translates into the detected frequency shift. The classical...

This work deals with the design of a simple double output voltage phase detector, using specific type analog multiplier, and its application in frequency demodulator. The active parts was performed Taiwan Semiconductor Manufacturing Company (TSMC) $0.18~\mu \text...

Phase locked loops find wide application in several modern applications mostly in advance communication and instrumentation systems. PLL being a mixed signal circuit involves design challenge at high frequency. This work analyses the design of a mixed signal phase locked loop for faster phase and frequency locking. The PLL is designed in GPDK090 library of CMOS 90nm process to operate at a freq...

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in this paper, a high speed delay-locked loop (dll) architecture ispresented which can be employed in high frequency applications. in order to design the new architecture, a new mixed structure is presented for phase detector (pd) and charge pump (cp) which canbe triggered by double edges of the input signals. in addition, the blind zone is removed due to the elimination of reset signal. theref...

Especially for the long distance Frequency Modulated Continuous Wave(FMCW) radar applications, the non linear frequency sweep due to the Voltage Controlled Oscillators (VCO) results in range resolution degradation. Open loop control solutions like Voltage Pre-Distortion method are not adequate for the applications like FMCW Radar Altimeter because of the noisy and non-stationary structure of th...

In this thesis, we present a reduced-complexity decision-directed joint timing and phase recovery method for continuous phase modulation (CPM). Using a simple linear modulation—pulse amplitude modulation (PAM)—representation of CPM, more popularly known as the Laurent representation of CPM, we develop formulations of a PAM based joint timing error detector (TED) and a phase error detector (PED)...