Digital RF transmitter design
This Final Year Project is aimed to design a digital RF transmitter with proposed new architecture. Conventional quadrature and polar transmitters are firstly designed to function as a reference, followed by the design of the proposed digital polar transmitter. Mathematic expressions for various mo...
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| Other Authors: | |
| Format: | Final Year Project (FYP) |
| Language: | English |
| Published: |
2016
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| Online Access: | http://hdl.handle.net/10356/67912 |
| _version_ | 1811690506672930816 |
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| author | Cheng, Deruo |
| author2 | Gwee Bah Hwee |
| author_facet | Gwee Bah Hwee Cheng, Deruo |
| author_sort | Cheng, Deruo |
| collection | NTU |
| description | This Final Year Project is aimed to design a digital RF transmitter with proposed new architecture. Conventional quadrature and polar transmitters are firstly designed to function as a reference, followed by the design of the proposed digital polar transmitter.
Mathematic expressions for various modulations schemes are derived. Models are built respectively to obtain good understanding of different modulation features. Based on the comparison between different modulation schemes and transmitter architectures, the proposed transmitter architecture is decided.
Conventional quadrature transmitter and polar transmitter are modeled based on the quadrature expression and polar expression of the generalized modulated signal. The simulation result shows these two transmitter designs have nearly identical signal waveforms and power spectrum density.
The digital polar transmitter design separates the amplitude and phase information of the baseband signal. The amplitude information is modulated into a 1-bit digital data through a 1st order ∆∑ modulator. The phase information is modulated onto the digital carrier through variable time delay. The modulated amplitude information and phase information are mixed to produce the output modulated signal. After bandpass filtering, the output signal is proved to have a 20dB noise floor, which meets the requirement of subsequent SMPA (switch mode power amplifier). |
| first_indexed | 2024-10-01T06:05:05Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/67912 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:05:05Z |
| publishDate | 2016 |
| record_format | dspace |
| spelling | ntu-10356/679122023-07-07T18:00:40Z Digital RF transmitter design Cheng, Deruo Gwee Bah Hwee School of Electrical and Electronic Engineering DRNTU::Engineering This Final Year Project is aimed to design a digital RF transmitter with proposed new architecture. Conventional quadrature and polar transmitters are firstly designed to function as a reference, followed by the design of the proposed digital polar transmitter. Mathematic expressions for various modulations schemes are derived. Models are built respectively to obtain good understanding of different modulation features. Based on the comparison between different modulation schemes and transmitter architectures, the proposed transmitter architecture is decided. Conventional quadrature transmitter and polar transmitter are modeled based on the quadrature expression and polar expression of the generalized modulated signal. The simulation result shows these two transmitter designs have nearly identical signal waveforms and power spectrum density. The digital polar transmitter design separates the amplitude and phase information of the baseband signal. The amplitude information is modulated into a 1-bit digital data through a 1st order ∆∑ modulator. The phase information is modulated onto the digital carrier through variable time delay. The modulated amplitude information and phase information are mixed to produce the output modulated signal. After bandpass filtering, the output signal is proved to have a 20dB noise floor, which meets the requirement of subsequent SMPA (switch mode power amplifier). Bachelor of Engineering 2016-05-23T07:02:25Z 2016-05-23T07:02:25Z 2016 Final Year Project (FYP) http://hdl.handle.net/10356/67912 en Nanyang Technological University 61 p. application/pdf |
| spellingShingle | DRNTU::Engineering Cheng, Deruo Digital RF transmitter design |
| title | Digital RF transmitter design |
| title_full | Digital RF transmitter design |
| title_fullStr | Digital RF transmitter design |
| title_full_unstemmed | Digital RF transmitter design |
| title_short | Digital RF transmitter design |
| title_sort | digital rf transmitter design |
| topic | DRNTU::Engineering |
| url | http://hdl.handle.net/10356/67912 |
| work_keys_str_mv | AT chengderuo digitalrftransmitterdesign |