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Title: | Frequency demodulator using an injection-locked oscillator: Analysis and design | Authors: | Ramírez, Franco Araña, Víctor A. Suárez, Almudena |
UNESCO Clasification: | 3307 Tecnología electrónica | Keywords: | demodulators injection locked oscillators Poincare mapping |
Issue Date: | 2008 | Publisher: | 1531-1309 | Journal: | IEEE Microwave and Wireless Components Letters | Abstract: | This letter introduces a systematic procedure for the design of direct frequency demodulators based on injection locking. An oscillator is synchronized to the modulated carrier and the modulation signal is extracted from the time-variation of the current or voltage of the bias-network. The synchronized oscillator is optimized with harmonic-balance techniques specifically developed for this demodulation function. The circuit performance under modulated conditions is evaluated with envelope transient and using a modified Poincare map. The new techniques are illustrated by means of their application to a direct frequency demodulator at 1.2 GHz. The letter shows that provided accurate nonlinear analysis and design techniques are used, injection-locked oscillators constitute a good option for the implementation of direct frequency demodulators. | URI: | http://hdl.handle.net/10553/45897 | ISSN: | 1531-1309 | DOI: | 10.1109/LMWC.2007.911993 | Source: | IEEE Microwave and Wireless Components Letters[ISSN 1531-1309],v. 18, p. 43-45 |
Appears in Collections: | Artículos |
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