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

RF power dividers and power combiners are circuits that accept an input signal and deliver multiple outputs equal in phase and amplitude. In hybrid varieties, the signal is split into different phases with equal amplitude

RF waveguide components are circular, elliptical or rectangular metal tubes or pipes through which electromagnetic waves are propagated in microwave and RF communications. The wave passing through the medium is forced to follow the path determined by the physical structure of the guide

RF and microwave laminates are used as substrates for radio frequency (RF) and microwave communication systems and electronics. They are designed to meet the demanding performance standards for higher-frequency applications

Waveguide terminators absorb energy and prevent RF signals from reflecting back from open-ended or unused waveguide ports

RF adapters are used to connect different waveguides and/or coaxial types. They are passive devices that direct radio frequency (RF) signals with minimal return loss

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

RF isolators and RF circulators are passive devices used to control the propagation of an RF signal

RF terminators are used to absorb energy and prevent RF signals from reflecting back from open-ended or unused ports

RF waveguide isolators and circulators permit a signal to pass in one direction while providing high isolation to reflected energy in the reverse direction. RF waveguide circulators are passive devices with three or more ports

Delay lines are devices used to slow down a signal by a time interval in an electrical network. There are two basic delay line technologies: passive and active. 

Resistors and potentiometers are passive electronic components that oppose the flow of either alternating current (AC) or direct current (DC). 

Inductors, coils, and chokes are passive components designed to resist changes in current and store energy in the form of a magnetic field. 

Electromagnetic (EMI) filters and radio frequency interference (RFI) filters purify signals by attenuating the high-frequency RFI (typically 150kHz and up) and passing the low frequency EMI.

RF 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