Conference proceedings article
Impact of group delay on tunable impedance matching networks based on Barium-Strontium-Titanate varactors

Publication Details
Gonzalez-Rodriguez, E.; Maune, H.; Zheng, Y.; Shen, L.; Shah, I.; Hofmann, K.; Dahlhaus, D.; Jakoby, R.
Publication year:
Pages range:
Book title:
Signals, Systems, and Electronics (ISSSE), 2012 International Symposium on

In this paper the bit error rate (BER) performance of a tunable impedance matching network (TMN) is shown using a QAM digital modulation scheme over an AWGN channel. The characterized TMN is based on Barium-Strontium-Titanate (BST) ferroelectric thick-film varactors with a maximum DC tuning voltage of 90V. Inherent dispersive behavior is subsumed in the forward transmission of the passive components. Due to this nonlinear phase response, in general to maximize the overall system performance, an agile selection of the varactor values is demonstrated, taking into account the phase and group delay. Detailed simulation results of a testbed are presented and the influence of different matched impedances on the tuning behavior is discussed at a center frequency of 1.9 GHz.

AWGN channel, AWGN channels, barium-strontium-titanate varactors, bit error rate, Bit error rate, Delay, delays, error statistics, ferroelectric capacitors, ferroelectric thick-film varactors, frequency 1.9 GHz, group delay, impedance matching, Impedance matching, QAM digital modulation, quadrature amplitude modulation, Radio frequency, Receivers, Signal to noise ratio, thin film capacitors, tunable impedance matching networks, varactors, Varactors

Last updated on 2019-25-07 at 11:42