Note the message says "The distance between the layout pins for port 1 is electrically large above xxx GHz, S-parameters may become unphysical." This is based on geometry, not actual results. And that warning refers to the single ended excitation where the actual circuit port is at that gr...
To reduce crosstalk from lines on the layer above, the ground plane should be run over a larger section of the same layer. The asymmetrical and central placement of the ground planes and power planes is best for your PCB. As a result, bending loads are better distributed and easier to ...
assuming Layer 1 is used for the RF components and transmission lines. For striplines and offset striplines, ground planes above and below the center conductor are required. These planes must not be shared or assigned to signal or power nets, but must be uniquely allocated to ground. Partial ...
for example, whose large air gap makes them notorious generators of magnetic field radiation, are generally avoided in some noise-sensitive applications for that reason. The bobbin core, which is just a bobbin-shaped piece of ferrite, is one of the simplest and cheapest ...
Filling all the specific information on the fab notes is very important as it documents all the vital information of the PCB design for future reference. If the board is being designed for a customer it is recommended to get approval from the customer after the above step. An example of fab...
*H 2 Antenna Design and RF Layout Guidelines 2 Antenna Basics An antenna is basically a conductor exposed in space. If the length of the conductor is a certain ratio or multiple of the wavelength of the signal1, it becomes an antenna. This condition is called "resonance"...
A large portion of the power delivery network's frequency spectrum is above the series resonant frequency of the decoupling capacitors, where they are inductive. The PCB layout for decoupling capacitors is also inductive, and is a larger inductance than the capacitor itself. It is necessary to ...
There's also a "port" functionality which allows you to snap together geometry like Legos without caring about where exactly the absolute coordinates of either geometry is. For instance, connecting the above misaligned rectangles is a two-line command: It also allows you to do things like add ...
The tradeoff of using strip line is a lower propagation speed. 7.1.3 Stripline Impedance – Single-ended Zo = 60 æ 2H + T ö Er Lnçè1.9 0.8W + T ÷ø W = Width of the trace H = Height of the dielectric above the return plane T = Trace thickness Er = Relative ...
(e.g., one is partially above the other). For example, the vertical overlap can be controlled by a threshold, multiplied by the median width of the longest line. The threshold can be a function of the length of the line, meaning that the test might fail at first, but succeed later,...