Ferrite beads are used to suppress unwanted signals that can interfere with electrical devices such as DC supplies, transmission lines and cables. They provide attenuation of selected frequency bands

Comb generators create harmonic frequencies from which one frequency can be selected with a narrow filter and filtered out

RF phase detectors and comparators are circuits or instruments that provide a DC output voltage proportional to the difference in phase between two RF signals.

Flame detectors monitor and analyze incoming radiation at selected wavelengths

RF waveguide amplifiers accept a varying input signal and produce an output signal that varies in the same way, but with a larger amplitude.

Frequency converters and translators scale and/or filter frequency inputs to produce outputs signals with frequencies that are a function of the inputs

Phase-locked loop (PLL) frequency synthesizers are electronic devices that produce frequencies coherent to a reference frequency

Frequency-to-voltage converters accept a signal and convert its frequency to a corresponding analog voltage level

RF frequency multipliers are nonlinear devices that produce an output signal with a frequency that is larger than the frequency of a corresponding input signal by a predetermined factor

Frequency meters are instruments that provide analog outputs as frequencies that vary as a function of the applied input. They display values on a dial, usually with a needle or moving pointer

RF filters and microwave filters are devices that pass or reject signals by frequency. Basic types include bandpass filters, band reject filters, low pass filters, and high pass filters

Frequency counters are digital indicating meters for accurate measurement and display of square wave and pulse input signals

Voltage-to-frequency converters accept a voltage signal and convert its analog level to a signal with a corresponding frequency

Active band reject filters are tuned circuits that prevent the passage of signals within a specified band of frequencies. These devices are also known as bandstop or notch filters

Signal generators and waveform generators are used to test and align all types of transmitters and receivers, to measure frequency and to generate a signal, waveform or noise source. Signal generators can use AC energy, audio frequency (AF) and radio frequency (RF) to function