Gregory Frizon Gusberti - Gusberti Analog

Effective Methods for Dielectric Constant Characterization in PCB Design

This article explores three methods to determine a PCB’s effective dielectric constant by analyzing resonance and reflection peaks, enabling accurate permittivity extraction for design and simulation.

A Simple 2nd Order Low-Pass Filter

Low-pass filtering is key for noise reduction, sensor averaging, and controller stabilization. This article introduces a second-order low-pass filter, adjustable via complex pole placement in the Z-plane for optimal resonance and Q factor.

Characterization of Crystal Resonators

Crystal resonators are essential for high-stability oscillators, offering low cost, precision, stability, and low-power consumption. This article explores the extraction of their electrical parameters to optimize performance in electronic design.

Loop Antenna Design

This study focuses on the design, construction, and evaluation of a 50 Ohm loop antenna for the 434 MHz band. Beginning with a full-wave round loop antenna, the design evolves into a 2:1 rectangular loop, with experiments conducted to assess prototype performance and the effects of material choices.

BJT PN Junction Noise Source

Reverse biased base-emitter junctions are effectively used as noise sources,

HP 1152A Mod

Active probes are a must when designing high frequency topologies.

Garage Remote Control - Range Improvement

Remote controls for garage doors are designed as low-cost devices,

Blocking Oscillator

Blocking Oscillators were the standard method for creating oscillators and

DSSS BPSK Beacon

This article describes the development and working principles behind a

Parametric Frequency Divider

Parametric amplifiers and frequency dividers are a class of devices