Thin radar modules often force an uncomfortable trade-off: the RF launch wants a stable reference plane while the mechanical envelope pushes the stackup toward finer features. This engineering guide uses the RO4835 PCB to explain how an HDI build can be reviewed without confusing design intent with measured qualification data. Define the thin-module constraint first...
At 77 GHz, a promising RF launch can lose margin when the transition, return path, and enclosure reference are treated as separate tasks. This guide uses the RO4835 PCB as an engineering example for a radar launch that can be reviewed before fabrication. The geometry is illustrative, not a customer measurement. Start with the launch...
Reliable RF transitions are often lost at the connector, launch, or layer change rather than in the long transmission line. This guide shows how an RO4350B PCB project can use via fences, reference-plane continuity, and fabrication controls to protect return current. It is an engineering design method, not a claimed KKPCB customer result. Why the...
When a radio board combines a 5G front end, clock distribution, and digital processing, stackup selection becomes a system decision rather than a material shortcut. An RO4350B PCB can provide a predictable RF foundation, but only when the chosen dielectric thickness, copper, reference planes, and mixed-signal boundary are carried consistently into fabrication. This guide gives...
At millimeter-wave frequencies, a small dielectric or registration change can move the phase of an antenna feed enough to reduce array margin. The practical question is not simply whether an RO4835 PCB is low loss; it is how the stackup, copper geometry, and fabrication handoff keep phase repeatable from prototype to production. This engineering guide...
Engineering intent. A 77 GHz radar front end is sensitive to the geometry between the antenna elements, feed transitions, and transceiver. This article explains how to plan a RO3003 PCB stackup for that path. It is a conceptual design workflow, not a customer case study or a measured production result. RO3003 is a ceramic-filled PTFE...
A GNSS module PCB is often treated as a simple carrier for a receiver module, antenna connector, and power supply. That view misses the part of the board that most often determines whether the receiver sees a usable signal: the path from the antenna to the module input. The layout must preserve the intended transmission-line...
Every High-Speed PCB project eventually arrives at the same question: how much does back drilling really cost the design? The answer is rarely a single number, because the effect grows with frequency and depends on decisions taken across the stackup, the layout and the fabrication process. At microwave bands, a board that looks acceptable on...
On paper, a High-Frequency PCB, is a set of dimensions and a bill of materials. In production it is a process, and Via Stubs is where the two views meet. Small deviations that no one would question on a low-frequency board become measurable at high-frequency bands. Most of the cost associated with via stubs is...
Every High-Speed PCB project eventually arrives at the same question: how much does impedance control really cost the design? The answer is rarely a single number, because the effect grows with frequency and depends on decisions taken across the stackup, the layout and the fabrication process. At above 20 GHz, a board that looks acceptable...
KKPCB is a leading electronic solutions provider specializing in PCB design, fabrication, assembly, and testing for Flex, Rigid-Flex, RF/Microwave, HDI, rigid multilayer, and ATE test boards. We offer comprehensive end-to-end services, including prototyping, component sourcing, SMT/THT assembly, functional testing, enclosure assembly, and final product packaging. With our one-stop, in-house capabilities, KKPCB delivers OEM and ODM solutions with fast turnaround, high quality, and cost-effective results, serving clients worldwide.
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