Title :
Intermodulation distortions caused by protection circuits against transient interfering voltages for receiving systems
Author :
ter Haseborg, Jan Luiken ; Wolf, Felix
Author_Institution :
Dept. of Meas. Eng., Tech. Univ. of Hamburg, Harburg
Abstract :
Protective devices with nonlinear components (e.g. special suppressor diodes) that cause intermodulation distortion, particularly the second- and third-order harmonics, are studied. It is shown that increasing insertion loss due to increasing frequency and decreasing breakdown voltage limits the high-frequency cutoff. The discussion covers the arrangement of the protective devices for an H-Adcock antenna system, the transiant response of the unprotected and protected system, and the RF behaviour of overvoltage prediction devices. A protection circuit for maximum signal frequencies of 200 MHz is presented
Keywords :
intermodulation; overvoltage protection; radiation protection; receiving antennas; transient response; H-Adcock antenna system; RF behaviour; high-frequency cutoff; insertion loss; intermodulation distortion; nonlinear components; overvoltage prediction devices; protection circuits; receiving systems; suppressor diodes; transiant response; transient interfering voltages; Antenna measurements; Circuits; Dipole antennas; Directive antennas; Frequency; Goniometers; Intermodulation distortion; Protection; Receiving antennas; Voltage;
Conference_Titel :
Electromagnetic Compatibility, 1988. Symposium Record., IEEE 1988 International Symposium on
Conference_Location :
Seattle, WA
DOI :
10.1109/ISEMC.1988.14140