Abstract
This paper presents and compares two different design approaches for bi-directional distributed amplifiers (BDDA) in 0.11 μm CMOS technology. Distributed amplifiers (DA) and BDDAs can be designed starting from T-type and π- type unit cells of artificial transmission lines (ATL). This paper presents π- type topology for BDDAs and compares with T-type BDDAs in terms of gain, bandwidth and chip area. Designing DAs and BDDAs with π- type unit cells provide advantages from two different perspectives. Firstly, π- type BDDAs can be designed with more gm - cells than T-type BDDAs with the approximately same chip area. This provides higher gain without the cost of chip area because a π- type unit cell has one less inductor than a T-type unit cell. Secondly, smaller-sized gm - cells can be designed owing to extra active cells in π- type BDDAs in order to increase the bandwidth of BDDAs. Hence, π- type BDDA can provide higher bandwidth with the same gain and the chip area if desired. The simulated gains of BDDA with three T-type and four π- type unit cells are 8.5 dB and 10 dB at 2-19.5 GHz. In addition, BDDA built using π- type unit cells with active cells equivalent to four fully active gm - cells is designed with smaller gm - cells to achieve higher bandwidth. Thus, 8.5 dB gain is obtained over 2-23 GHz. The chip areas are almost the same as the BDDA with three T-type unit cells for all versions of designed π- type BDDAs.
Original language | English |
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Title of host publication | PRIME 2023 - 18th International Conference on Ph.D Research in Microelectronics and Electronics, Proceedings |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
Pages | 333-336 |
Number of pages | 4 |
ISBN (Electronic) | 9798350303209 |
DOIs | |
Publication status | Published - 2023 |
Event | 18th International Conference on Ph.D Research in Microelectronics and Electronics, PRIME 2023 - Valencia, Spain Duration: 18 Jun 2023 → 21 Jun 2023 |
Publication series
Name | PRIME 2023 - 18th International Conference on Ph.D Research in Microelectronics and Electronics, Proceedings |
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Conference
Conference | 18th International Conference on Ph.D Research in Microelectronics and Electronics, PRIME 2023 |
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Country/Territory | Spain |
City | Valencia |
Period | 18/06/23 → 21/06/23 |
Bibliographical note
Publisher Copyright:© 2023 IEEE.
Keywords
- Bi-directional distributed amplifier
- CMOS wide-band amplifier
- distributed amplifier
- π- type BDDA
- π- type DA