by minicircuitsadmin | Nov 30, 2023 | Amplifiers, Engineering Resources, Filters, Fixed Attenuators / Terminations, Frequency Mixers
The concept of the phased array antenna system was first put into practice by German Physicist Ferdinand Braun and his assistants in the spring of 1905. In short, he and his assistants carefully controlled the excitation phase of each antenna in an array and...
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 Rinchen Athup | Oct 17, 2023 | Engineering Resources, Filters, Surface Mount Assembly & Manufacturing Techniques
DOWNLOAD PDF Mini-Circuits’ BFHK-series of high-rejection LTCC filters have been characterized with stopband rejection floors on the order of 90 dB and higher with a combination of size, reliability, and cost currently unmatched by other filter technologies with...
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...
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