Three-way divider includes first transmission line, second transmission line, and third transmission line. First transmission line includes first input-side line and first output-side line, which are connected at first connection point. Second transmission line includes second input-side line and second output-side line, which are connected at second connection point. Third transmission line includes third input-side line and third output-side line, which are connected at third connection point. Each of first transmission line, second transmission line, and third transmission line has an electrical length that is ¼ a wavelength of a second frequency. The first connection point and the second connection point, the third connection point and the second connection point, the first output terminal and the second output terminal, and the third output terminal and the second output terminal are respectively connected via corresponding resistors.

Three-way divider includes first transmission line, second transmission line, and third transmission line. First transmission line includes first input-side line and first output-side line, which are connected at first connection point. Second transmission line includes second input-side line and second output-side line, which are connected at second connection point. Third transmission line includes third input-side line and third output-side line, which are connected at third connection point. Each of first transmission line, second transmission line, and third transmission line has an electrical length that is ¼ a wavelength of a second frequency. The first connection point and the second connection point, the third connection point and the second connection point, the first output terminal and the second output terminal, and the third output terminal and the second output terminal are respectively connected via corresponding resistors.

A power distribution/coupling circuit includes a common terminal, first and second terminals, a first connection point, a first inductor connected between the first connection point and the first terminal, a second inductor connected between the first connection point and the second terminal, a first capacitor connected between an end of the first inductor closer to the first terminal and a ground, a second capacitor connected between an end of the second inductor closer to the second terminal and the ground, a third capacitor connected between the first connection point and the ground, and a resistor connected between the first terminal and the second terminal, wherein the power distribution/coupling circuit further includes a third inductor connected between the common terminal and the first connection point and a fourth capacitor connected between an end of the third inductor closer to the common terminal and the ground.

An orthomode junction for separating and/or combining orthogonally-polarized radiofrequency wave signals, comprises a body which has a main cavity forming a main waveguide, which has a blind end, and auxiliary cavities forming auxiliary waveguides, which communicate laterally with the main cavity in the vicinity of the blind end thereof, and a deflection insert situated at the blind end of the main cavity and facing the auxiliary cavities, the deflection insert having different shapes on the side of the auxiliary cavities respectively.

An orthomode junction for separating and/or combining orthogonally-polarized radiofrequency wave signals, comprises a body which has a main cavity forming a main waveguide, which has a blind end, and auxiliary cavities forming auxiliary waveguides, which communicate laterally with the main cavity in the vicinity of the blind end thereof, and a deflection insert situated at the blind end of the main cavity and facing the auxiliary cavities, the deflection insert having different shapes on the side of the auxiliary cavities respectively.

A power splitter includes a common port, a first port, a second port, a first phase shifter connected between the common port and the first port, and a second phase shifter connected between the common port and the second port. The first phase shifter includes a first capacitor, a first inductor, and a second inductor. The second phase shifter includes a second capacitor, a third inductor, and a fourth inductor.

A power splitter includes a common port, a first port, a second port, a first phase shifter connected between the common port and the first port, and a second phase shifter connected between the common port and the second port. The first phase shifter includes a first capacitor, a first inductor, and a second inductor. The second phase shifter includes a second capacitor, a third inductor, and a fourth inductor.

A waveguide-to-waveguide power combiner/divider including a waveguide including a first opening at a first end of a first section of the waveguide in a first plane and n openings of n sections at n other ends of the waveguide, wherein n is a positive integer. At least one of the n sections is bent in at least one plane different from the plane of first section, and the first section and n sections each have at least two sides that are broader than at least two other sides; and n−1 walls within waveguide configured to divide a height of first section into n heights. Each of n sections has a height equal to one of the n heights, wherein the n−1 walls are located at a junction of the first section and the n sections and extend toward the first opening of the first section.

A waveguide-to-waveguide power combiner/divider including a waveguide including a first opening at a first end of a first section of the waveguide in a first plane and n openings of n sections at n other ends of the waveguide, wherein n is a positive integer. At least one of the n sections is bent in at least one plane different from the plane of first section, and the first section and n sections each have at least two sides that are broader than at least two other sides; and n−1 walls within waveguide configured to divide a height of first section into n heights. Each of n sections has a height equal to one of the n heights, wherein the n−1 walls are located at a junction of the first section and the n sections and extend toward the first opening of the first section.

A waveguide microstrip line converter includes a waveguide, a dielectric substrate, a ground conductor including a slot, and a line conductor. The line conductor includes a first section that is a microstrip line having a first line width, a conversion unit that is a second section positioned immediately above the slot and having a second line width greater than the first line width, and a third section extending from the second section in a first direction and performing impedance matching between the first section and the second section. One of the opposite ends of the third section in the first direction is connected to the second section. The first section extends in a second direction perpendicular to the first direction continuously from the other end of the opposite ends of the third section.