TY - GEN
T1 - Low phase-delay reflection-type CRLH band-pass-filter
AU - Nishino, Tamotsu
AU - Tsuru, Masaomi
AU - Miyazaki, Moriyasu
PY - 2006
Y1 - 2006
N2 - In this paper, we propose the concept of the reflection-type composite right left handed (CRLH) filter to obtain low phase-delay in pass band. A lumped-element CRLH transmission line has stop bands and pass bands according to its lumped-element values. Therefore, it is a candidate of tunable filter configuration. But in pass band, transmission phase changes very rapidly when the number of unit CRLH cells increases. This is a fatal disadvantage for a communication device. On the other hand, reflection phase does not change so fast. We have realized this reflection property could be transferred to transmission property by combining with a hybrid circuit. Finally, the concept was verified by being implemented on a GaAs substrate. The result showed phase change was less than 90 degrees in 20% bandwidth.
AB - In this paper, we propose the concept of the reflection-type composite right left handed (CRLH) filter to obtain low phase-delay in pass band. A lumped-element CRLH transmission line has stop bands and pass bands according to its lumped-element values. Therefore, it is a candidate of tunable filter configuration. But in pass band, transmission phase changes very rapidly when the number of unit CRLH cells increases. This is a fatal disadvantage for a communication device. On the other hand, reflection phase does not change so fast. We have realized this reflection property could be transferred to transmission property by combining with a hybrid circuit. Finally, the concept was verified by being implemented on a GaAs substrate. The result showed phase change was less than 90 degrees in 20% bandwidth.
KW - Microwave filters
KW - MMICs
UR - http://www.scopus.com/inward/record.url?scp=41649122067&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=41649122067&partnerID=8YFLogxK
U2 - 10.1109/EUMC.2006.281009
DO - 10.1109/EUMC.2006.281009
M3 - Conference contribution
AN - SCOPUS:41649122067
SN - 2960055160
SN - 9782960055160
T3 - Proceedings of the 36th European Microwave Conference, EuMC 2006
SP - 745
EP - 748
BT - Proceedings of the 36th European Microwave Conference, EuMC 2006
PB - IEEE Computer Society
T2 - 36th European Microwave Conference, EuMC 2006
Y2 - 10 September 2006 through 12 September 2006
ER -