Bridged composite right/left handed unit cell with all-pass and triple band response

A modified design of the composite right/left handed (CRLH) unit cell showing all-pass and triple band response is proposed. By using an additional inductance which cross-couples the input and output ports of the conventional CRLH, a bridged CRLH unit cell (B-CRLH) is created. This allows additional right-handed (RH) wave propagation below the cutoff frequency of the conventional CRLH to dc, forming a new low-frequency-RH band with a non-linear dispersion relationship. Meantime, a mid-frequency-LH band and a high-frequency-RH band, which are inherited from the conventional CRLH, are still present, resulting in triple band configuration. The dispersion relation and Bloch impedance of the B-CRLH are investigated by standard periodic analysis. Balanced conditions to close transitions between the three bands, to realize all-pass behavior, are derived. Full wave structure simulations show good agreement with circuital simulations and measurement. Also, a triband open-stub consisting of two B-CRLH unit cells is demonstrated as an application example. © 2001-2012 IEEE.

• Fecha de publicación: 2012
• Institución: Universidad Tecnológica de Bolívar
• Repositorio: Repositorio Institucional UTB
• Idioma: eng
• OAI Identifier: oai:repositorio.utb.edu.co:20.500.12585/9090
• Acceso en línea: https://hdl.handle.net/20.500.12585/9090
• Palabra clave: All-pass; Bridged CRLH (B-CRLH); Composite right/left handed (CRLH); Left-handed (LH) transmission lines; Right-handed (RH) transmission lines; Triple band response; All-pass; Application examples; Bridged CRLH (B-CRLH); Composite right/left-handed; Dispersion relations; Dispersion relationship; Full waves; Input and outputs; Modified designs; Periodic analysis; Simulations and measurements; Triple band; Unit cells; Cells; Cutoff frequency; Electric lines; Transmission line theory; Cytology
• Rights: restrictedAccess
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/