GE De-yong, ZHANG Xu, HE Ming, et al. The Design of High Temperature Superconducting Filter and Quadruplexer Using the Group Delay of the Reflection Coefficient Based Optimization Method[J]. Acta Electronica Sinica, 2013, 41(11): 2216-2222.
GE De-yong, ZHANG Xu, HE Ming, et al. The Design of High Temperature Superconducting Filter and Quadruplexer Using the Group Delay of the Reflection Coefficient Based Optimization Method[J]. Acta Electronica Sinica, 2013, 41(11): 2216-2222. DOI: 10.3969/j.issn.0372-2112.2013.11.016.
A space mapping optimization method based on the group delay of the reflection coefficient is introduced.A high temperature superconducting (HTS) 8-pole filter and a quadruplexer are designed using the proposed method.The resultant filter has a center frequency of 3000MHz and a band width of 40 MHz.And the four channels of the quadruplexer are 3640MHz~3740MHz
3780MHz~3820MHz
3880MHz~3930MHz and 3970MHz~4030MHz
respectively.The simulation results of the filter and the quadruplexer show that the return loss is higher than 22dB in the passband and the ripple coefficient is less than 0.1dB.In addition
the isolation of the four channels of the quadruplexer is more than 40dB.It is shown that the simulation results is consistent with the theoretical results
which verifies that the group delay of the reflection coefficient based on space mapping method is an efficient and accurate approach to design HTS filters and multiplexers.