Publication: Design and analysis of CMOS 180nm gilbert mixer for RF application
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Date
2024-08
Authors
Nur Fareezah binti Raihan Sharif
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Abstract
The rapidly growing field of wireless communication demands efficient and high-performance RF components, especially for Bluetooth Low Energy (BLE)
applications. BLE requires efficient RF mixers to modulate and demodulate signals effectively. However, existing solutions face challenges in the parameters trade-off, such as power consumption, noise figure, and conversion gain. This project focuses on the design and analysis of a CMOS 180 nm Gilbert Mixer for RF applications, with a specific emphasis on BLE technology. The primary objective of this project is to design a Gilbert mixer that optimizes performance parameters such as noise figure and conversion gain, while minimizing power consumption. The research objectives include designing and optimizing a CMOS differential amplifier to achieve a gain of at least 20dB at 1 MHz intermediate frequency, integrating the CMOS differential amplifier into the Gilbert mixer circuit to achieve a conversion gain of more than 15 dB from 2.4 GHz to 1 MHz while maintaining a noise figure of less than 10 dB, and developing a layout for the down conversion Gilbert mixer that meets the DRC and LVS requirements. The methodology involves designing a differential amplifier, integrating it into a Gilbert mixer, and developing the layout. The Cadence Virtuoso tool is utilized to design the schematic of the Gilbert mixer with an operating frequency of 2.4 GHz for BLE technology. Results obtained show that the gain of differential amplifier achieved is 36.815 dB at 1 MHz IF frequency, while the Gilbert mixer achieves conversion gain of 18.4614 dB and noise figure of 8.5533 dB during the post layout. The design meets all the objectives and is suitable for BLE applications.