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 | Feb 1, 2023 | 90- and 180-Degree Hybrids, Amplifiers, Engineering Resources
A balanced amplifier is the proper term for a pair of devices operated in quadrature phase and combined to amplify a signal. Quadrature simply means that signals incident upon the devices are 90⁰ out-of-phase with one another. The term “quadrature-combined pair”...
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