Extended frequency-band-decomposition sigma–delta A/D converter
نویسندگان
چکیده
منابع مشابه
A self-calibration scheme for Extended Frequency-Band-Decomposition sigma-delta ADC
Frequency-Band-Decomposition (FBD) is a good candidate to be used to increase the bandwidths of ADC converters based on sigma-delta modulators for software and cognitive radio applications where we need to convert wide bandwidths. Each modulator processes a part of the band of the input signal which is then passed through a digital filter. In the case of large mismatches in the analog modulator...
متن کاملA Narrow-Band Delta-Sigma Frequency-to-Digital Converter
This paper describes a novel frequency-to-digital conversion technique based on the D flip-flop frequency deltasigma concept. It is shown that given some frequency constraints, there is no need for using a sampling frequency twice the maximum FM frequency. For narrow-band FM demodulation, it is further shown that by sampling the clock signal width the FM signal, the digital resolution is more e...
متن کاملIdentification of AD converter
For small integrated CMOS digital chips that communicate via analog signals the size and the cost of the AD-converters is a problem. An integrated CMOS AD-converter that could be built into the chip would solve this problem. In a CMOS process, the manufacturers only guarantee a very low accuracy of the recistances. The components of the ADC is therefore very inaccurate. The purpose of this repo...
متن کاملS-band Frequency Spectra
This paper presents a novel design of a microstrip patch antenna with compact nature and the study of various antenna parameters to suit the applications such as WiMax operating in the frequency range of 3.3 – 3.5 GHz and in other applications like fixed satellite services, maritime mobile services etc. covering 2 4 GHz of S-band frequency spectra. It is experimental observed that by placing st...
متن کاملStudy of the Optimum Frequency at 2.4GHz ISM Band for Underwater Wireless Ad Hoc Communications
Underwater communications at low frequencies are characterized by the low data rate. But in some cases wireless sensors must be placed quite close to each other and need high data rates in order to accurately sense an ecosystem that could be contaminated by invasive plants or hazardous waste. Most researchers focus their efforts on increasing the data transfer rates for low frequencies, but, du...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Analog Integrated Circuits and Signal Processing
سال: 2009
ISSN: 0925-1030,1573-1979
DOI: 10.1007/s10470-008-9274-6