This is mounted in a plastic housing with a battery compartment and an RF video modulator selectable to either North American television channel 3 or 4.
Abstract Analog-to-digital converters ADCs are used in all communication systems. The sampling rate of such ADCs are directly related to the system data rate. The ultra-wide UWB system is on of the newest proposed wireless technology. This system is targeting wireless transmission of video, high-quality audio and other high-bandwidth data which makes it possible to enjoy the complete wireless freedom in a short-range environment.
Since the system proposes the transmission of high data rate, the ADC sampling rate requirement for this system is very high in the order of 1 GHz. However, the flash implementation suffers from two important drawbacks.
For ADC resolution higher than 2-bit the silicon area is huge and the power consumption is very high.
These disadvantages make it impossible to implement flash ADC on an integrated solution for the whole system or at the least at the RF part. This paper investigates the possibility of overcoming the disadvantages of a standard flash ADC realization.
The paper proposes a solution where the flash ADC uses only inverters for its comparators. With this simple realization, a very high speed an high resolution ADCs can be manufactured with low power consumption and small silicon area.
This implementation seems to be the best fit for the UWB system. A complete ADC block for the UWB system is design based on the inverters-only flash topology and the simulation results are meeting the requirements of this high speed wireless communication.A THESIS Submitted in Partial Fulﬁllment of the Requirements for the Degree of CONTINUOUS DIGITAL CALIBRATION OF PIPELINED A/D CONVERTERS By Alma Delic-Ibuki´ c´ instrumentation require high-speed, high-resolution Analog-to-Digital Converters (ADCs).
standards for Asymmetric DSL (ADSL) and Very high-speed DSL (VDSL) require ADCs used in these systems to meet conversion requirements of MS/s and 24 MS/s respec- tively with resolutions on the order of 13 to 14 bits .
conversion, so it is high speed, with a sampling frequency of 80MHz.
A four bit A NOVEL COMPRESSING ANALOG-TO-DIGITAL CONVERTER by Keir Christian Lauritzen Thesis submitted to the Faculty of the Graduate School of the University of Maryland, College Park, in partial fulfillment.
A Study of Successive Approximation. Registers and Implementation of an UltraLow Power bit SAR ADC in 65nm CMOS Technology Master’s thesis performed in. This thesis explores the design of high-speed ADCs and investigates architectural and circuit concepts that address the problems associated with lower supply voltage and analog gain.
ANALOG/DIGITAL EQUALIZATION AND MODULATION TECHNIQUES. A Thesis. by. KEYTAEK LEE Major Subject: Electrical Engineering.
HIGH-SPEED LINK MODELING: ANALOG/DIGITAL EQUALIZATION AND MODULATION TECHNIQUES. A Thesis. by. KEYTAEK LEE.
Submitted to the Office of Graduate Studies of the most critical bottleneck in ADC-based receivers is.