Rajagopal, Chakaravarty D. and Noh, Norlaili Mohd and Rajendran, Jagadheswaran and Ramiah, Harikrishnan (2022) A 5 GHz current controlled oscillator with active inductor. Lecture Notes in Electrical Engineering, 829 LN. 1016 – 1021. ISSN 1876-1100, DOI https://doi.org/10.1007/978-981-16-8129-5_155.
Full text not available from this repository.Abstract
Oscillators play the key role in determining the quality of the RF communication systems. Most oscillators are voltage based (VCO) and are mainly in two types, which are the LC tank oscillators and the non-LC tank oscillators. The former is very good for lower phase noise due the usage of passive inductor. The latter, such as ring oscillators, are much smaller in size, thus lower cost, but exhibit much higher phase noise. However, current sources are becoming more popular and employed in oscillators to form Current Controlled Oscillator (CCO), as they produce higher frequency signals as compared to voltage source. Hence, the goal for this work was to design a CCO that produces 5 GHz center frequency, tuning range of 500 MHz and with phase noise better than −110 dBc/Hz by employing active inductor (AI-CCO). To demonstrate the proposed concept, a 5-stage ring oscillator with active inductor and controlled by a current-mode circuit, was designed using 0.18-um CMOS technology. Simulation results show that the frequency range of this 5-stage oscillator is 3.87 GHz to 5.81 GHz. The phase noise is −113.2 dBc/Hz at 1 MHz offset with a center frequency of 5.81 GHz. The performance of this new design shows improvement, in general, about 50 on the frequency while 15 on the phase noise, when compared with other non-LC tank topologies. © 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
| Item Type: | Article |
|---|---|
| Funders: | UNSPECIFIED |
| Additional Information: | Cited by: 0; Conference name: 11th International Conference on Robotics, Vision, Signal Processing and Power Applications, RoViSP 2021; Conference date: 5 April 2021 through 6 April 2021; Conference code: 272139 |
| Uncontrolled Keywords: | Electric inductors; Oscillators (electronic); 5-stage ring oscillator; Active inductor current controled oscillator; Active inductors; Current-controlled oscillators; Delay cell; Differential dual delay cell; Inductor currents; LC-tank oscillator; Phase-noise; Stage ring oscillators; Phase noise |
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering |
| Divisions: | Faculty of Engineering > Department of Electrical Engineering |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 10 Feb 2025 02:11 |
| Last Modified: | 10 Feb 2025 02:16 |
| URI: | http://eprints.um.edu.my/id/eprint/43273 |
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