WaveLab Engineering AG High Frequency, Microwave & EMC Hochfrequenz Bern

Hardware development and antennas

Circuit design and layout

For the classical circuit designs and the belonging layouts are we using the most recent version of Altium Designer. The used libraries are generated and maintained by us, so we know the content details and references, allowing to keep the libraries content traceable.

  The unobtrusive, daily tools are often extremely
precious, because they allow the continuous traceabililty of the established designs. 

Circuit design, Schematic. For complex systems are the schematics of the complete desing inside Altium Desiger organized in hierarchical order. This eases the handling and the readability of the overall design.

Circuit Design, Layout. In case the used elements have 3D bodies, is it possible to visualize the developed layout as 3D model. This allows to mount virtually the major elements and to verify the final mounted situation in an early stage.

Antenna development

Since many years are we experienced in the design, construction and optimization of different antenna structures. The already build antenna types are heterogenic spread among the possible families and some representatives of them are following:
  • LogPer antenna 100MHz to 2.5GHz
  • Crossed-LogPer antenna made in inox
  • Railway antenna 790MHz to 6GHz, in frequency bands, including type approval DIN EN50155
  • Linear polarized patch antenna
  • Circular polarized patch antenna, some of them multiband
  • Helix antenna 2GHz
  • PIFA PCB antenna in different styles
  • Horn antenna, narrow band and broadband designs
  • Electrical small antennas (Small Antennas) integrated into products

to just name some of them. Out of them are below two representatives shown:

Multiband railway antenna. The railway antenna has additionally an integrated GPS antenna and here the whole assembly is tested in the anechoic chamber.

Multiband patch antenna. The antenna is used as feed system of a parabolic dish antenna. The polarization is circular and the two phases are feed separately. The center frequency is at 2.15GHz.

Dualband PCB-antenna. The antenna is used in a mobile unit and operates in two ISM bands below 1GHz. Here is the simulated far field at 400MHz displayed, where we see the peaks and nulls of the radiation pattern. The feeding point is at the number combination 11.

Dualband PCB-Antenna. The antenna is used in a mobile unit and operates in two ISM bands below 1GHz. Here is the simulated far field at 900MHz displayed. Due to the large size of the structure in relation to the wave length forms the structure a pattern with multiple peaks and nulls.

High frequency circuit design using simulation tools

Simulation tool MWO. The circuit is made with elements that are based on a RF model description. Depending on the element is this model description linear or non-linear.

Simulation tool MWO. Due to the unified database is the layout in parallel build, while the schematic is drawn. Therefore is the additional required work to finalize the layout is very small, by adding some small supplements.

Simulation tool AXIEM. In the 3D view can the mesh or the surface currents be displayed. By using the circuit extraction function can electromagnetic (EM)-structures very easily derived from the existing layout.

Simulation tool VSS. Typically are transmission systems, receivers, radar systems or antenna arrays simulated with VSS. With receivers are typically bit error rates or the constellation diagram of the modulated carrier displayed.

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