title: Terahertz antenna electronic chopper.
abstract: In this paper, we present an electronic circuit used to bias a photoconductive antenna that generates terahertz radiation. The working principles and the design process for the device are discussed in detail. The noise and shape of the wave measurements for a built device are considered. Furthermore, their impact on a terahertz pulse and its spectra is also examined. The proposed implementation is simple to build, robust and offers a real improvement over THz instrumentation due to the frequency tuning. Additionally, it provides for galvanic isolation and ESD protection.
authors.affiliation: Department of Electronics, Wroclaw University of Technology, 27 Wybrzeze Wyspianskiego St., 50-370 Wroclaw, Poland.
authors.forename: L A
authors.initials: LA
authors.lastname: Sterczewski
authors.affiliation: Department of Electronics, Wroclaw University of Technology, 27 Wybrzeze Wyspianskiego St., 50-370 Wroclaw, Poland.
authors.forename: M P
authors.initials: MP
authors.lastname: Grzelczak
authors.affiliation: Department of Electronics, Wroclaw University of Technology, 27 Wybrzeze Wyspianskiego St., 50-370 Wroclaw, Poland.
authors.forename: E F
authors.initials: EF
authors.lastname: Plinski