Title :
Varactor-tuned multi-band six-port front-end for wireless applications
Author :
Djoumessi, Erick E. ; Tatu, S.O. ; Bosisio, R.G. ; Chaker, M. ; Wu, Ke
Author_Institution :
Poly-Grames Res. Center, Montreal, QC
Abstract :
A varactor-based tunable dual-band six-port junction has been investigated and experimentally validated for potential use in ISM band and wireless LAN (IEEE 802.11a, b) systems. A varactor tuned dual-band quadrature hybrid coupler has been realized to achieve maximum tunability while preserving specifications for typical quadrature hybrid coupler over tunable dual-band frequencies. In addition, nonlinear measurements have been performed to observe hybrid coupler limitations. Finally, a good agreement between measurements and simulations has been demonstrated for the proposed tunable six-port interferometer front-end architecture.
Keywords :
varactors; wireless LAN; IEEE 802.11a; IEEE 802.11b; ISM band; dual-band quadrature hybrid coupler; nonlinear measurements; tunable six-port interferometer front-end architecture; varactor-tuned multi-band six-port front-end; wireless LAN; Band pass filters; Couplers; Diodes; Dual band; Frequency; Power harmonic filters; Temperature; Transceivers; Tunable circuits and devices; Varactors;
Conference_Titel :
Microwave Conference, 2008. APMC 2008. Asia-Pacific
Conference_Location :
Macau
Print_ISBN :
978-1-4244-2641-6
Electronic_ISBN :
978-1-4244-2642-3
DOI :
10.1109/APMC.2008.4958045
