The present application discloses embodiments that relate to an electromagnetic apparatus. In one aspect, the present apparatus includes a circuit board configured to propagate an electromagnetic signal. The apparatus also includes a waveguide configured to propagate an electromagnetic signal. The apparatus further includes a coupling port configured to couple a signal between the circuit board and the waveguide, where the coupling port has dimensions based on a desired impedance of the port.

The present application discloses embodiments that relate to an electromagnetic apparatus. In one aspect, the present apparatus includes a circuit board configured to propagate an electromagnetic signal. The apparatus also includes a waveguide configured to propagate an electromagnetic signal. The apparatus further includes a coupling port configured to couple a signal between the circuit board and the waveguide, where the coupling port has dimensions based on a desired impedance of the port.

A high speed circuit assembly includes a high speed circuit including at least one transmission line extending to a transmission line end, and radar absorbing material disposed adjacent the transmission line.

An embodiment of the present invention provides greater isolation between a port serving as a Tx port and a port serving as an Rx port in a diplexer. A diplexer (1) includes: a filter pair (11) constituted by first and second filters (12, 13) having a passband which is a first frequency band, the first and second filters being arranged next to each other; first and second directional coupler sections (21, 31), each of which is connected to a respective one of opposite sides of the filter pair (11); and a third filter (41) which is connected to a port (third port 213) of the first directional coupler section (21) on a side away from the filter pair (11), the third filter having a passband which is a second frequency band.

Systems and techniques that facilitate high-density embedded broadside-coupled attenuators are provided. In various embodiments, an attenuator can comprise an output line. In various aspects, the attenuator can further comprise a reflectively-terminated input line that is broadside coupled to the output line. In various instances, a downstream end of the reflectively-terminated input line can be shorted to ground. In other instances, a downstream end of the reflectively-terminated input line can be open from ground. In various cases, the output line can exhibit a non-looped-back-layout.

Lossy members, which are disposed to overlap with a part of branch conductors in a signal conductor, respectively, and cause a loss of the power of signals flowing in the branch conductors, and via holes connecting each of the output terminals of the signal conductor and the ground conductor are included. The branch conductor includes a delay circuit having an electrical length of 90 degrees.

A high-frequency terminator includes a dielectric substrate, a metal layer provided on a back surface of the dielectric substrate, a transmission line provided on a front surface of the dielectric substrate, a resistor provided on the front surface of the dielectric substrate and connected to the transmission line, and a conductor electrically connecting the resistor and the metal layer. The dielectric substrate includes a first substrate part having a first thickness in a direction from the back surface toward the front surface, and a second substrate part having a second thickness in the direction that is less than the first thickness. The transmission line extends from the first substrate part to the second substrate part and is connected to the resistor on the second substrate part. The conductor electrically connects the metal layer and the resistor at the second substrate part.

A transmission line. The transmission line includes a reference electrode. The transmission line also includes a stripline. The stripline meanders within a plane. The stripline has a non-planar profile when viewed along a direction parallel to the plane.

An energy absorbing circuit includes a power divider that is configured to divide an incoming RF signal into a plurality of RF component signals; a plurality of transmission lines that are connected with the power divider, each of the transmission lines configured to transmit a respective RF component signal of the plurality of RF component signals; and a plurality of matching elements, each matching element being terminated to a respective one of the transmission lines.

Electrical devices having variable electrical properties. The variable electrical characteristics or operation of the devices are based on the potential applied to a variable-dielectric constant sector associated with the device. The electronic devices or component may include bends, power splitters, filters, ports, phase shifters, frequency shifters, attenuators, couplers, capacitors, inductors, diplexers, hybrids of beam forming networks.