LNA RF Module PCB Design: Noise Figure and Grounding A low noise amplifier sits at the front of a receive chain and carries an unusual burden. Everything downstream adds noise on top of the noise it contributes, and the gain it provides cannot recover signal to noise ratio that has…

PCB Adhesive Selection for Stiffeners: A Practical Review for Manufacturing Teams Modern electronics depend on boards that are assembled correctly the first time. Every product – a phone, a charger, a medical instrument or an industrial controller – relies on thousands of solder joints that must conduct current for years.…

PCB Flex to Rigid Soldering: A Practical Review for Manufacturing Teams Electronics manufacturing has become a discipline of small details. Solder paste volumes, placement accuracy, temperature profiles and inspection limits all add up to the final result. This guide looks at PCB flex to rigid soldering from the perspective of…

Long PCB Design: Handling, Warpage and Signal Integrity A long PCB is a board whose dimensions exceed the working envelope of the equipment that has to make and assemble it. Communications antenna panels, satellite arrays, lighting rails and instrument backplanes all fall into this category. The circuits themselves are often…

Copper Plating and Nickel Plating in PCB Fabrication Two metals do most of the work in PCB plating. Copper forms the conductors and lines every hole, while nickel appears as a thin barrier layer under gold on pads and edge contacts. They are deposited for different reasons, by different processes,…

Dielectric Constant of PCB Materials: Measurement and Use Dielectric constant is the property that links a laminate datasheet to the width of a trace. It describes how much the material slows an electric field and how much capacitance a given geometry produces, and it is the input that most impedance…

Prepreg vs Core: The Two Materials Behind Every Multilayer PCB A multilayer board is not one material but a stack of two. The cores carry the circuits; the prepreg glues them together and forms the dielectric between them. Designers often treat the two as interchangeable because both are made of…

PCB Flex Impedance Control Through Bends A flex circuit must hold its signal behavior whether it lies flat or folds into a housing. That sounds obvious until the impedance shifts at the bend. Controlled impedance on flex depends on trace width, dielectric thickness, copper roughness and the reference plane. Every…

Radar PCB Design: Materials, Phase Matching and Thermal Path A radar board is a mixed-signal assembly at the extreme end of the spectrum. It carries microwave transmit and receive paths, high-speed digital processing, and a power stage, often on a single multilayer stack inside a sealed module. The design problem…

Glucometer PCB Design: Precision Analog in a Handheld Device A glucometer PCB measures an electrochemical reaction in a single-use test strip and converts it into a reading that a patient will act on. The current it measures is in the nanoampere to microampere range, the device runs for months on…