Design Reports

Design of an LC-Bandpass with 1 % Relative Bandwith with QuickFil

This report bp1qf.pdf in german describes the design of a very narrow LC-bandpass with a center frequency of 5 MHz and a bandwidth of 50 kHz. Synthesis and calculation of the circuit elements are done with the filter synthesis program QuickFil (english version is called Filter Master). All transformation steps to get a realizable circuit are shown in detail.

Modeling of an RF-Choke for SPICE

This short report mdr40uh.pdf in german describes the modeling of a typical RF-choke from simple measurements.

Calculate Impedance from Measured Insertion Gain in 50Ohm-System

This short report vf.pdf in german describes how to calculate the modulus of an impedance Z(f) from insertion gain values measured using a tracking generator and a spectrum analyzer.

Simulation of a Receiver Frontend

The short report sim_rx_et_1.pdf in german describes the simulation of the frontend of shortwave receiver. The file sim_rx_et_2.pdf contains a copy of the slides presented at the ASIM-Workshop ''Simulation technischer Systeme'' at the Technical University Dresden on March 5, 2009.

Design of a matching circuit for 455 - 505 MHz

The report Entwurf_einer_Anpassschaltung_fuer_455-505MHz_28-FEB-84.pdf in german describes the design of a UHF matching circuit between two load impedances consisting of resistances and parallel capacitances. The filter synthesis program S/FILSYN is used to calculate the passive element values.

For more information about any of these designs, please email to Hans.Gall@Bausch-Gall.de.