Abstract:
Provided is a diplexer that is smaller and more lightweight than conventional diplexers. A diplexer includes a filter pair, first and second directional coupler sections, and first and second converter section pairs. These members are constituted by waveguides. The waveguides are post-wall waveguides that have a first wide wall, a second wide wall, and narrow walls. The first wide wall and the second wide wall are a pair of conductor plates provided on the opposite sides of a dielectric substrate. Each of the narrow walls is a post wall constituted by conductor posts passing through the dielectric substrate.
Abstract:
An interconnection substrate includes: a substrate having a first surface and a second surface opposite the first surface; and a transmission line including two parallel through-hole interconnections that are exposed to the first and second surfaces and are formed inside the substrate. Also, at least one of the two through-hole interconnections includes a narrow portion having a smaller diameter than a diameter of the through-hole interconnection in the first surface and a diameter of the through-hole interconnection in the second surface.
Abstract:
A method for manufacturing a mode converter including a substrate that is a single member and includes a first main surface, a second main surface opposite to the first main surface, and a micro hole which is formed in the first main surface, grounding conductor layers that are formed on the first main surface and the second main surface, a plane circuit that is formed on the first main surface, and a pin that is formed so as to cover an inner surface of the micro hole and is electrically connected to the plane circuit, the method includes: irradiating the substrate with laser light to form a first modified portion to a desired depth from one main surface of the substrate; removing the first modified portion to form the micro hole; and filling the micro hole with a conductive material to form the pin.
Abstract:
A slotted waveguide array antenna having a smaller reflection coefficient and a larger gain than conventional one is realized. In a slotted waveguide array antenna (1A), control walls (12c1-12c6) orthogonal to an upper wall (11) and side walls of the waveguide are provided inside the waveguide, and slots (11d1-11d6) each extend over an interface between regions formed by partition with corresponding one of the control walls but do not overlap the corresponding one of the plurality of control walls when viewed from above.
Abstract:
A mode converter includes a substrate including a first main surface aid a second main surface, a first ground conductor layer formed on the first main surface, a second ground conductor layer formed on the second main surface, a plane circuit that is formed on the first main surface and propagates a high frequency, a pin that is connected to the plane-circuit, is formed inside a through-hole which penetrate from the first main surface to the second main surface, and communicates with the first main face and the second main surface, and an anti-pad that is formed between an end portion of the pin exposed in the second main surface and the second ground conductor layer.