HF electronics is more an art than a craft!

3D wiring e.g.: Oscillator (single transistor 100MHz oscillator) and HF-PIN-Switch (good from DC to approx. 100MHz):

Voltage controlled oscillator with three MMIC amplifiers to get three independent outputs. Frequency range up to 1GHz depending on the varactors and the coil. This version runs at 100MHz and was designed for experiments with acoustooptics: