Transitional elements to offset a capacitive impedance in a transmission line are disclosed. Described are various examples of transitional elements in a multilayer substrate that introduce a transitional reactance to cancel the transmission line capacitive effects. The transitional elements reduce insertion loss.

To provide a circuit board of a small size capable of propagating a radio wave between a front surface and a back surface of the circuit board.

A circuit board includes: a through hole that penetrates between a front surface and a back surface of the circuit board; and a waveguide formed in the through hole, the waveguide including a dielectric having a rectangular parallelepiped shape and a conductor covering surfaces other than a first surface and a second surface of the dielectric, the first surface being on a front surface side of the circuit board, the second surface being on a back surface side of the circuit board.

A semiconductor device including an Integrated Circuit (IC) package and a plastic waveguide. The IC package includes a semiconductor chip; and an embedded antenna formed within a Redistribution Layer (RDL) coupled to the semiconductor chip, wherein the RDL is configured to transport a Radio Frequency (RF) signal between the semiconductor chip and the embedded antenna. The plastic waveguide is attached to the IC package and configured to transport the RF signal between the embedded antenna and outside of the IC package.

Disclosed is a transmission line-waveguide transition device including side surfaces and a top surface having a size and shape corresponding to a waveguide to which a signal of a transmission line is transmitted, the side surfaces and top surface having a plate shape; and a plate-shaped ridge formed in an inner space defined by the side surfaces and the top surface, the ridge being provided with a slope having one end connected to the transmission line and an opposite end contacting the top surface.

In accordance with one or more embodiments, a dielectric coupler includes a neck portion configured to receive a first electromagnetic wave from a hollow waveguide. A flared portion is configured to generate, responsive to the first electromagnetic wave, a second electromagnetic wave along a surface of a transmission medium, wherein the flared portion at least partially surrounds the transmission medium, wherein the second electromagnetic wave propagates along the surface of the transmission medium without requiring an electrical return path. A tapered portion is configured to interface the neck portion to the flared portion.

A connection arrangement comprises an antenna adapted to transmit and/or receive electromagnetic waves and a waveguide member adapted to transport the electromagnetic waves. An end section of the waveguide member is arranged at the antenna in a transmission state such that an electromagnetic radiation can be transmitted between the antenna and the waveguide member. The waveguide member has a recess extending from a free end of the waveguide member into the waveguide member. The antenna is at least partially inserted in the recess in the transmission state.

In accordance with one or more embodiments, a dielectric coupler includes a neck portion configured to receive a first electromagnetic wave from a hollow waveguide. A flared portion is configured to generate, responsive to the first electromagnetic wave, a second electromagnetic wave along a surface of a transmission medium, wherein the flared portion at least partially surrounds the transmission medium, wherein the second electromagnetic wave propagates along the surface of the transmission medium without requiring an electrical return path. A tapered portion is configured to interface the neck portion to the flared portion.

Hybrid structures, filters and duplexers are disclosed. According to one aspect, a radio frequency (RF) duplexer includes a common resonator coupled to at least one chamber of an air cavity filter, a first ceramic waveguide filter. CWGF, having a first opening in a first CWG wall of the first CWGF, the first opening at least partially aligned with a first window of the common resonator to couple energy between the common resonator and the CWGF, and a second CWGF having a second opening in a second CWG wall of the second CWGF, the second opening at least partially aligned with the second window of the common resonator to couple energy between the air cavity resonator and the CWGF.

A connecting unit for radio-frequency components has: a housing; a first interface and a second interface which are arranged on the housing and are designed to be coupled to in each case one radio-frequency component; an internal conductor which runs in the housing and is connected to the first interface and the second interface in order to establish a radio-frequency connection between the first interface and the second interface; a spacer which surrounds the internal conductor and extends at least along a portion of the length of the internal conductor. The housing is manufactured from an electrically conductive and rigid material and the spacer is arranged such that the internal conductor is at a distance from the housing at least in sections.

Aspects of the subject disclosure may include, a system that can be configured for generating an electromagnetic wave and coupling the electromagnetic wave to a transmission medium with a reduced loss of radiation of the electromagnetic wave into free space. The system can also be configured to receive an electromagnetic waves form the transmission medium with a reduced loss of radiation of the electromagnetic wave into free space. Other embodiments are disclosed.