A 10-Bit, 600 MS/s Multi-Mode Direct-Sampling DAC-Based Transmitter
This paper presents a 10-bit, 600 MS/s direct-sampling sub-Nyquist rate DAC-based frequency-agile wideband transmitter for IEEE 802.22 cognitive radio applications in the VHF/UHF TV band (54 – 862 MHz). Multi-mode reconstruction using Gilbert cells, including non-return-to-zero, return-to...
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| Format: | Article |
| Language: | English |
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IEEE
2022-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/9950483/ |
| _version_ | 1811311609934512128 |
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| author | Nam-Seog Kim |
| author_facet | Nam-Seog Kim |
| author_sort | Nam-Seog Kim |
| collection | DOAJ |
| description | This paper presents a 10-bit, 600 MS/s direct-sampling sub-Nyquist rate DAC-based frequency-agile wideband transmitter for IEEE 802.22 cognitive radio applications in the VHF/UHF TV band (54 – 862 MHz). Multi-mode reconstruction using Gilbert cells, including non-return-to-zero, return-to-complement, and return-to-complement with reset, allows the DAC to utilize the image spectrum in the higher Nyquist zones for wideband direct synthesis. A two-dimensional decoder of the dynamic element matching is applied to reduce the correlated noise to the input signals. A multi-mode control signal generator uses a slack borrowing strategy to provide the transmitter’s zero frequency hopping time without interference between the three modes to improve the quality of service of the cognitive radio system. A low-power supply-regulated PLL and a divided-by-2 circuit generates quadrature DAC sampling clock signals of 600 MHz to ensure a SDR of > 70dB. The proposed transmitter is fabricated in 65 nm CMOS within an active area of 0.3 mm2, and it achieves a DNL of 0.12 LSB, an INL of 0.25 LSB, an SFDR of > 57 dBc, and IM3 of < −62 dBc in the TV band while consuming 19 mW. |
| first_indexed | 2024-04-13T10:21:49Z |
| format | Article |
| id | doaj.art-68d058e8c2c041bfab83ac4326633d78 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-04-13T10:21:49Z |
| publishDate | 2022-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-68d058e8c2c041bfab83ac4326633d782022-12-22T02:50:28ZengIEEEIEEE Access2169-35362022-01-011012569612570610.1109/ACCESS.2022.32223319950483A 10-Bit, 600 MS/s Multi-Mode Direct-Sampling DAC-Based TransmitterNam-Seog Kim0https://orcid.org/0000-0002-1039-5945School of Information and Communication Engineering, Chungbuk National University, Cheongju, Republic of KoreaThis paper presents a 10-bit, 600 MS/s direct-sampling sub-Nyquist rate DAC-based frequency-agile wideband transmitter for IEEE 802.22 cognitive radio applications in the VHF/UHF TV band (54 – 862 MHz). Multi-mode reconstruction using Gilbert cells, including non-return-to-zero, return-to-complement, and return-to-complement with reset, allows the DAC to utilize the image spectrum in the higher Nyquist zones for wideband direct synthesis. A two-dimensional decoder of the dynamic element matching is applied to reduce the correlated noise to the input signals. A multi-mode control signal generator uses a slack borrowing strategy to provide the transmitter’s zero frequency hopping time without interference between the three modes to improve the quality of service of the cognitive radio system. A low-power supply-regulated PLL and a divided-by-2 circuit generates quadrature DAC sampling clock signals of 600 MHz to ensure a SDR of > 70dB. The proposed transmitter is fabricated in 65 nm CMOS within an active area of 0.3 mm2, and it achieves a DNL of 0.12 LSB, an INL of 0.25 LSB, an SFDR of > 57 dBc, and IM3 of < −62 dBc in the TV band while consuming 19 mW.https://ieeexplore.ieee.org/document/9950483/Cognitive radiocomplementary metal-oxide-semiconductorcurrent-steeringdifferential non-linearitydigital-to-analog converterdynamic element matching |
| spellingShingle | Nam-Seog Kim A 10-Bit, 600 MS/s Multi-Mode Direct-Sampling DAC-Based Transmitter IEEE Access Cognitive radio complementary metal-oxide-semiconductor current-steering differential non-linearity digital-to-analog converter dynamic element matching |
| title | A 10-Bit, 600 MS/s Multi-Mode Direct-Sampling DAC-Based Transmitter |
| title_full | A 10-Bit, 600 MS/s Multi-Mode Direct-Sampling DAC-Based Transmitter |
| title_fullStr | A 10-Bit, 600 MS/s Multi-Mode Direct-Sampling DAC-Based Transmitter |
| title_full_unstemmed | A 10-Bit, 600 MS/s Multi-Mode Direct-Sampling DAC-Based Transmitter |
| title_short | A 10-Bit, 600 MS/s Multi-Mode Direct-Sampling DAC-Based Transmitter |
| title_sort | 10 bit 600 ms s multi mode direct sampling dac based transmitter |
| topic | Cognitive radio complementary metal-oxide-semiconductor current-steering differential non-linearity digital-to-analog converter dynamic element matching |
| url | https://ieeexplore.ieee.org/document/9950483/ |
| work_keys_str_mv | AT namseogkim a10bit600mssmultimodedirectsamplingdacbasedtransmitter AT namseogkim 10bit600mssmultimodedirectsamplingdacbasedtransmitter |