Tunable ferroelectric impedance matching networks and their impact on digital modulation system performance |
| |
| Authors: | Erick González-Rodríguez Holger Maune Yuliang Zheng Mohsen Sazegar Lufei Shen Ibrahim Asghar Shah Dirk Dahlhaus Klaus Hofmann Rolf Jakoby |
| |
| Affiliation: | 1. Institute for Microwave Engineering and Photonics, Technische Universität Darmstadt, Merckstraße 25, 64283 Darmstadt, Germany;2. Integrated Electronic Systems Lab, Technische Universität Darmstadt, Merckstraße 25, 64283 Darmstadt, Germany;3. Communications Laboratory, University of Kassel, Wilhelmshöher Allee 73, 34121 Kassel, Germany |
| |
| Abstract: | In this paper the bit error rate performance and error vector magnitude of a tunable impedance matching network is analyzed assuming QPSK, 16-QAM and 64-QAM digital modulation schemes. The characterized tunable impedance matching network is based on barium–strontium–titanate ferroelectric thick-film varactors. Inherent dispersive behavior is subsumed into the forward transmission of the passive device. Due to this nonlinear phase response, in general to maximize the overall system performance, an agile tuning of the varactor values is demonstrated, taking into account the phase and group delay of s21 parameter. Detailed signal simulation results based on measured data of a testbed are presented. The influence of varying matched impedances on the tuning behavior with different modulation bandwidths is discussed at a center frequency of 1.9 GHz. |
| |
| Keywords: | Tunable impedance matching network Barium&ndash strontium&ndash titanate Reconfigurable architectures Bit error rate Error vector magnitude |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
