hochfrequenter

Hochfrequenter is a German adjective describing something that operates at high frequencies. In technical usage it is the comparative form of hochfrequent, and is commonly used to qualify signals, components or systems that function at higher frequencies relative to a reference. The term is prevalent in electronics, communications engineering and physics, where high-frequency (HF) domains are distinguished from low and medium frequency ranges. In the context of German terminology, hochfrequente Signale or hochfrequente Bauteile refer to signals and components in the radio frequency (RF) range and beyond, depending on the reference used. In practice, the boundaries between frequency bands are defined by international standards and vary by field; typical designations include HF (3–30 MHz), VHF (30–300 MHz), UHF (300 MHz–3 GHz) and higher.

Technical design for hochfrequente systems faces specific challenges: transmission line effects, impedance matching, parasitic inductance and capacitance, radiation and coupling, dielectric losses, and skin effect. Accordingly, Hochfrequenztechnik (RF engineering) employs specialized methods such as S-parameter analysis, microwave network theory, impedance matching networks, RF filters, antennas and microwave transmission lines (coaxial, microstrip, waveguides). Measurement techniques rely on calibrated network analyzers, spectrum analyzers and time-domain reflectometry.

Outside engineering, the term may appear in physics or telecommunications to denote a comparative degree of frequency between phenomena, for example comparing signals or processes.