DOAJ Open Access 2014

Passive Switched Capacitor RF Front Ends for Spectrum Sensing in Cognitive Radios

Bodhisatwa Sadhu Martin Sturm Brian M. Sadler Ramesh Harjani

Abstrak

This paper explores passive switched capacitor based RF receiver front ends for spectrum sensing. Wideband spectrum sensors remain the most challenging block in the software defined radio hardware design. The use of passive switched capacitors provides a very low power signal conditioning front end that enables parallel digitization and software control and cognitive capabilities in the digital domain. In this paper, existing architectures are reviewed followed by a discussion of high speed passive switched capacitor designs. A passive analog FFT front end design is presented as an example analog conditioning circuit. Design methodology, modeling, and optimization techniques are outlined. Measurements are presented demonstrating a 5 GHz broadband front end that consumes only 4 mW power.

Topik & Kata Kunci

Electrical engineering. Electronics. Nuclear engineering Cellular telephone services industry. Wireless telephone industry

Penulis (4)

Bodhisatwa Sadhu

Martin Sturm

Brian M. Sadler

Ramesh Harjani

Format Sitasi

APA MLA BibTeX

Sadhu, B., Sturm, M., Sadler, B.M., Harjani, R. (2014). Passive Switched Capacitor RF Front Ends for Spectrum Sensing in Cognitive Radios. https://doi.org/10.1155/2014/947373

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Informasi Jurnal

Tahun Terbit: 2014
Sumber Database: DOAJ
DOI: 10.1155/2014/947373
Akses: Open Access ✓