by Rinchen Athup | Feb 13, 2024 | Engineering Resources
While traditional Frequency Division Multiplexing has been around for over 100 years, Orthogonal Frequency Division Multiplexing (OFDM) was first introduced by Robert W. Chang of Bell Laboratories in 1966.1,2,3,4 In OFDM, the stream of information is split between...
by minicircuitsadmin | Dec 19, 2023 | Engineering Resources, Measurement Methods & Techniques, Switches, Test Solutions
A Brief Primer on Beams and Streams In modern radio communications (particularly commercial cellular and Wi-Fi), Multiple-Input, Multiple-Output (MIMO) is a common method of utilizing multiple transmitting and receiving antennas to increase the capacity of the radio...
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 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...
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