This paper presents a distributed feedback and feedforward of discrete-time delta sigma modulator applications in the radio. We know the delta-sigma modulator using oversampling and noise shaping technique, thus we can relax the specifications of the components. This paper described the architectural differences and compare, the in-band signal is less sensitive to noise interference, and improve the resolution of the circuit. In the resonator, a simple structure with a small number of capacitor in resonator circuit.
This paper uses the TSMC 0.18£gm process parameters to the simulation, implementation, and measurement. Our fourth-order discrete-time delta-sigma modulator specifications as follows: the input signal frequency is 10.7MHz, the sampling frequency is 42.8MHz, the signal bandwidth is 200kHz, oversampling rate is 107, and one bit quantizer.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0723112-194253 |
| Date | 23 July 2012 |
| Creators | Chiu, Jih-Chin |
| Contributors | Chia-Hsiung Kao, Tzyy-Sheng Horng, Jyi-Tsong Lin, Ko-Chi Kuo |
| Publisher | NSYSU |
| Source Sets | NSYSU Electronic Thesis and Dissertation Archive |
| Language | Cholon |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0723112-194253 |
| Rights | user_define, Copyright information available at source archive |
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