RF filter for drone controls
We defined the frequency range, passband loss, stopband attenuation, transition steepness, power handling, impedance and available space, then selected suitable filter topologies.
Circuit and EM simulations accompanied the design. We optimized trace geometry, couplings, ground concept, via fencing, shielding and parasitic effects in the PCB layout.
We measured S-parameters, insertion loss, return loss, stopband behavior and harmonic suppression on prototypes. After several iterations, we took responsibility for manufacturing documentation, the test concept, manufacturing and testing.
RF layout review for a GPS tracker
We checked antenna connections, module placement, filters, matching, power supply and interference sources from RF, EMC and manufacturing aspects.
In the layout we checked controlled impedance, ground planes, via fencing, short signal paths and coexistence of the three wireless standards. For the GNSS path, we evaluated LNA, filtering, noise sources, and shielding.
We identified critical areas and formulated concrete changes for antenna positions, traces, ground routing, component placement, matching networks and test points.
RF junctions and test adapters
Optimization of line transitions and high-speed connections up to 90 GHz; Investigation of wafer probes, pogo pin fixtures and wire bond modules at 20 GHz.
Smartphone RF Coupler
Antenna couplers and test and matching structures for different mobile phones.
Vehicle coupler
Multiband RF coupler systems for automotive applications.
ISM radio modules
Integrated antennas and transceiver assemblies for radio links in the ISM band.
System noise
Conception of a measurement method for characterizing system noise.