Bandwidth enhancement technique for CMOS RGC transimpedance amplifier

2014 ◽  
Vol 50 (12) ◽  
pp. 882-884 ◽  
Author(s):  
Young‐Ho Kim ◽  
Eui‐Suk Jung ◽  
Sang‐Soo Lee
Keyword(s):  
Transimpedance Amplifier ◽  
Bandwidth Enhancement ◽  
Enhancement Technique

scholarly journals Bandwidth enhancement technique for TIA using flipped voltage follower

2017 ◽  
Vol 14 (10) ◽  
pp. 20170310-20170310 ◽  
Author(s):  
Shunta Mizuno ◽  
Fumiya Naito ◽  
Makoto Nakamura
Keyword(s):  
Bandwidth Enhancement ◽  
Enhancement Technique ◽  
Flipped Voltage Follower ◽  
Voltage Follower

A 58-dBΩ 20-Gb/s inverter-based cascode transimpedance amplifier for optical communications

2022 ◽  
Vol 43 (1) ◽  
pp. 012401
Author(s):  
Quan Pan ◽  
Xiongshi Luo
Keyword(s):  
Optical Measurement ◽  
Supply Voltage ◽  
Electrical Measurement ◽  
High Gain ◽  
Input Device ◽  
Cmos Process ◽  
Transimpedance Amplifier ◽  
Bandwidth Enhancement ◽  
Inductive Peaking ◽  
Capacitive Loading

Abstract This work presents a high-gain broadband inverter-based cascode transimpedance amplifier fabricated in a 65-nm CMOS process. Multiple bandwidth enhancement techniques, including input bonding wire, input series on-chip inductive peaking and negative capacitance compensation, are adopted to overcome the large off-chip photodiode capacitive loading and the miller capacitance of the input device, achieving an overall bandwidth enhancement ratio of 8.5. The electrical measurement shows TIA achieves 58 dBΩ up to 12.7 GHz with a 180-fF off-chip photodetector. The optical measurement demonstrates a clear open eye of 20 Gb/s. The TIA dissipates 4 mW from a 1.2-V supply voltage.

Alternative Approach In Enhancing The Bandwidth Of The Microstrip Antenna

2012 ◽  
Author(s):  
D. Yoharaaj ◽  
Alyani Ismail ◽  
Raja Syamsul Azmir Raja Abdullah
Keyword(s):  
Microstrip Antenna ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Local Area ◽  
Area Network ◽  
Ieee 802.11B ◽  
Bandwidth Enhancement ◽  
Enhancement Technique ◽  
Wireless Applications ◽  
Wireless Application

Antena merupakan satu komponen penting dalam sistem komukasi wayarles. Antena mikrojalur boleh digunakan untuk aplikasi wayarles kerana ia mempunyai ciri–ciri seperti ringan, mudah dipasang dan dihasilkan dalam kuantiti yang banyak. Walaupun antenna mikrojalur mempunyai ciri–ciri tersebut yang menjadikannya sesuai untuk digunakan dalam aplikasi wayarles, namun ia mempunyai satu kekurangan yang agak serius, iaitu ciri lebar jalur yang sempit. Selalunya, antena mikrojalur mempunyai jalur di antara 1 – 3%. Tetapi, sekiranya kekurangan ini dapat diatasi, potensi antena mikrojalur boleh dimaksimumkan. Satu teknik alternatif untuk memperluaskan lebar jalur antena mikrojalur telah dikaji dan dicadangkan di sini. Aplikasi wayarles yang telah dipilih untuk dikaji ialah rangkaian kawasan tempatan tanpa wayar (WLAN) berasaskan kepada piawaian IEEE 802.11b. Di Malaysia, jalur WLAN adalah di antara 2.4 GHz hingga 2.48 GHz. Teknik yang dipilih untuk meluaskan lebar jalur ini ialah Antena Mikrojalur Dua Tampal Serupa Dengan Ruangan Udara (IDMA). Dengan menggunakan teknik ini, perluasan lebar jalur hingga lebih kurang 11% dapat dicapai. Jalur ini sememangnya dapat merangkumi jalur WLAN dengan frekuensi operasinya pada 2.45 GHz. Kata kunci: Rangkaian kawasan tempatan wayarles (WLAN); antena mikrojalur dua tampal serupa dengan ruangan udara (IDMA) Antenna is a vital component in wireless application systems. The microstrip antenna can be used for wireless applications as it has features such as light weight, easily mounted and it is easy to mass produce. Although there are many features that suits well for microstrip antenna to be deployed for wireless applications, there is a very serious limitation where it has a very narrow bandwidth. The typical bandwidth of the microstrip antennas is between 1 – 3%. If this limitation is eliminated, the microstrip antenna can be used to its full potential. An alternative bandwidth enhancement technique is studied and then proposed in order to broaden the bandwidth of the microstrip antenna. The wireless application that is selected to be studied is the Wireless Local Area Network (WLAN) based on the IEEE 802.11b standard. In Malaysia, this WLAN band spans from 2.4 GHz to 2.48 GHz. The bandwidth enhancement technique which is selected is the Identical Dual–Patch Microstrip Antenna with Air–Gap (IDMA). By using this technique, a bandwidth enhancement of about 11% has been achieved. This bandwidth very well covers the required WLAN band with an operating frequency of 2.45 GHz. Key words: Wireless local area network (WLAN); identical dual patch microstrip antenna with air–gap (IDMA)

Ultrafast ultrasound imaging using a resolution and bandwidth enhancement technique

2017 ◽  
Author(s):  
Yanis Benane ◽  
Roberto Lavarello ◽  
Christian Cachard ◽  
Francois Varray ◽  
Jean-Michel Escoffre ◽  
...  
Keyword(s):  
Ultrasound Imaging ◽  
Bandwidth Enhancement ◽  
Enhancement Technique
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