Abstract:
A circuit arrangement for producing short electrical pulses, including a logic gate (1) with a very short gate transit time and having a clock signal being supplied to a trigger input (2) of the logic gate (1) as a trigger signal. An output signal based on the trigger signal is generated as a short electrical pulse at an output (3) or at one output (3 or 4) or at both outputs (3 and 4) of the logic gate (1).
Abstract:
A waveguide coupling, in particular for a radar level indicator having a waveguide, a carrier plate and at least one feed line, wherein the waveguide is placed on a first side of the carrier plate on the carrier plate, the feed line is guided on and/or in the carrier plate into the inner area of the waveguide and the feed line terminates with an end in the inner area of the waveguide. The carrier plate is continuous in the inner area of the waveguide and thus extends beyond the end of the feed line, an electrically conductive coupling element is arranged near the end of the feed line on and/or in the carrier plate, so that the coupling element is capacitively coupled with the feed line and the coupling element serves to couple electromagnetic waves led into the waveguide via the feed line in the waveguide.
Abstract:
A frequency synthesizer for a time base generator of a level measuring device which works according to the radar principle, with at least one first output for output of a first frequency signal, with at least one second output for output of a second frequency signal, and with a reference oscillator for producing a reference frequency signal, the first frequency signal and the second frequency signal having a small difference frequency relative to one another, the first frequency signal being producible by interaction of the reference oscillator with a direct digital synthesizer. The first frequency signal and second frequency signal can be generated with especially low noise by the second frequency signal being derived from the reference oscillator without interconnection of a direct digital synthesizer and the direct digital synthesizer being operated such that only a noise spectrum is produced which is at least partially minimized.
Abstract:
A dielectric antenna (1) having at least one supply element (2) and at least one lens (3) formed of a dielectric material. The dielectric antenna makes it possible to measure the surface of a medium with an essentially consistent measuring accuracy in that the lens (3) has an outer component (4) and an inner component (5). The outer component (4) has a radiating surface (6) that is spherical and an inner surface (7) that is spherical, and the inner component (5) has a contact surface (8) that spherical. Furthermore, the antenna is usable as part of a fill level sensor operating on the radar principle.
Abstract:
A drive unit for a synchronous ion shield mass separator having a reference oscillator (1), a digital direct synthesizer (2), a low-pass filter (3) and a comparator (4), wherein the synchronous ion shield mass separator has a comb-shaped separation electrode (6), the reference oscillator (1) provides the direct digital synthesizer (2) with a reference frequency, the output signal generated by the direct digital synthesizer is filtered by the low-pass filter (3) and the output signal of the low-pass filter (3) is processed by the comparator (4). A drive unit that can be applied flexibly and economically is implemented in that the output signal of the comparator (4) is converted by a programmable element (11) into a number of output signals corresponding to the number of teeth (7) of the comb-shaped separation electrode (6).
Abstract:
A dielectric antenna having an at least partially dielectric body and an electrically conductive sheath, wherein the dielectric body can be struck on a supply section with electromagnetic radiation and the electromagnetic radiation can be at least partially emitted from the dielectric body via a lens-shaped radiation section. The conductive sheath essentially surrounds the dielectric body from the supply section to the radiation section and a supply opening is provided in the conductive sheath in the area of the supply section and a radiation opening is provided in the conductive sheath in the area of the radiation section. The dielectric antenna that is easy to produce, has little interference and has a short construction as a result of the dielectric antenna having essentially the cross section of the radiation opening in the area of the supply section.