一个系统分析和设计用于通信终端的带通SigmaDeltaADC的实例

Vankee

一个系统分析和设计用于通信终端的带通SigmaDeltaADC的设计实例
其系统上的考虑可以供大家参考

erictien

good paper

lqlcug

都不说清楚点，搞了半天是博士论文。浪费了我5个信元啊！

sohubjb2

kkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk

shangyouqiang

都不说清楚点，搞了半天是博士论文。浪费了我5个信元啊！

guomin1437

thanks for sharing

DukeLeon

hao..

rain301

好东西

asdfjkl

一篇国外博士论文，介绍如下：
This thesis concerns discrete-time (DT) bandpass (BP) DS modulators targeted for intermediate
frequency (IF) analog-to-digital (A/D) conversion in radio receivers. The
receiver architecture adopted has to be capable of operating with different radio frequencies,
channel bandwidths, and modulation techniques. This is necessary in order
to achieve an extensive operating area and the possibility of utilizing a local mobile
phone standard or a standard suitable for a specific service. The digital IF receiver is
a good choice for a multi-mode and multi-band mobile phone receiver, because the
signal demodulation and channel filtering are performed in the digital domain. This
increases the flexibility of the receiver and relieves the design of the baseband part,
but an A/D conversion with high dynamic range and low power dissipation is required.
BP DS modulators are capable of converting a high-frequency narrow band signal and
are therefore suitable for signal digitization in an IF receiver.
First, the theory of BP DS modulators is introduced. It has been determined that
resonators are the most critical circuit blocks in the implementation of a high performance
BP DS modulator. Different DT resonator topologies are studied and a doubledelay
(DD) resonator is found to be the best candidate for a high quality resonator. A
new DD switched-capacitor (SC) resonator structure has been designed. Furthermore,
two evolution versions of the designed SC resonator are presented and their nonidealities
are analyzed. The three designed DD SC resonator structures are a main point of
the thesis, together with the experimental results.
Five different DT BP DS modulator circuit structures have been implemented and
measured. All three of the designed SC resonators are used in the implemented circuits.
The experimental work consists of both single-bit and multi-bit structures,
as well as both single-loop and cascade architectures. The circuits have been implemented
with a 0.35µm (Bi)CMOS technology and operate with a 3.0V supply.
The measured maximum signal-to-noise-and-distortion ratios (SNDRs) are 78dB over
270kHz (GSM), 75dB over 1.25MHz (IS-95), 69dB over 1.762MHz (DECT), and
48dB over 3.84MHz (WCDMA) bandwidths using a 60MHz IF signal.

bandpass

是吗，那很不错。