by minicircuitsadmin | Oct 28, 2023 | Directional Couplers, Engineering Resources, Surface Mount Assembly & Manufacturing Techniques
An ideal directional coupler has 0 dB of insertion loss, a constant coupling value vs. frequency, and infinite isolation and directivity. However, the physical, internal construction of directional couplers introduces frequency-dependent losses and finite...
by minicircuitsadmin | Sep 12, 2023 | 90- and 180-Degree Hybrids, Engineering Resources, Filters, Frequency Mixers, Modulators / Demodulators, Power Splitters / Combiners
While other modulation schemes discussed in this blog series (pulse, frequency, amplitude, phase) date back to the early chapters of RF engineering history, quadrature amplitude modulation (QAM) was first described by C. R. Cahn in 19602 and evolved steadily over the...
by minicircuitsadmin | Jun 29, 2023 | Amplifiers, Engineering Resources, Switches
Early Pioneers of RF Pulse Modulation Pulse modulation has been around for over 125 years. In 1887, German physicist Heinrich Hertz built the first experimental spark-gap transmitters (electromagnetic pulse modulators), with which he proved the existence of radio...
by minicircuitsadmin | Apr 5, 2023 | Amplifiers, Attenuators, Engineering Resources, Equalizers, Fixed Attenuators / Terminations, Limiters, Power Splitters / Combiners, RF Transformers
Many RF systems require distribution of an input signal from an antenna to feed multiple individual receivers. System designers use multi-couplers to accomplish this while multiplexing different paths into different bandwidths, maintaining the desired signal power...
by minicircuitsadmin | Feb 24, 2023 | Engineering Resources, Filters
Finding the right filter for frequency ranges above the 3 GHz range is a perennial challenge for RF system engineers. Designers are typically looking for repeatable performance at production volume and a small, surface-mount form factor robust enough to withstand...
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