A surface current suppression filter (1) is a bandstop filter that suppresses propagation of a surface current in a predetermined propagation direction on a dielectric substrate (2). The filter (1) is configured such that a plurality of electromagnetic band gap (EBG) rows (10, 20) are arrayed in an array direction. Each EBG row (10, 20) has at least one EBG (11, 21) that is arrayed in a perpendicular direction orthogonal to the array direction. Cutoff characteristics of a first EBG (11) in the first EBG row (10) differs from cutoff characteristics of a second EBG (12) in the second EBG row (20).

A dual-band shared-aperture antenna array based on a dual-mode parallel waveguide is applicable to the field of wireless communications technologies. The dual-band shared-aperture antenna array includes: a waveguide-substrate integrated waveguide transition structure, a multi-stage cascaded power splitter, a transverse coupling slot, a longitudinal coupling slot, a matching through-hole, a shared-aperture dual-mode parallel waveguide, and a shared-aperture parallel slot array. The entire structure includes two dielectric substrates. A signal is input to the multi-stage cascaded power splitter through the waveguide-substrate integrated waveguide transition structure located on a bottom-layer substrate. The foregoing dual-band shared-aperture antenna array based on a dual-mode parallel waveguide can separately implement a low-band fixed-beam slot array antenna, a high-band multi-beam long slot leaky-wave antenna, or a fixed-beam slot array antenna. It has a simple structure, multiple functions, high integration, a small size and light weight.

According to one aspect, a radar-radiometric imaging method is disclosed that includes cyclical observation, with a time period T, of a selected space section due to antenna beam rotation with a period T.sub.a (T.sub.a≤T) around a rotation axis misaligned with the antenna's beam axis, along with the simultaneous change of the spatial orientation of this rotation axis using an antenna positioning device to ensure survey of the selected space domain for the time T without gaps.

A method of manufacturing an integrated radio frequency (RF) module, comprising structurally forming at least one RF waveguide and at least one RF radiator of a metalized ceramic material. The RF waveguide(s) and the RF radiator(s) are connected and operatively coupled with each other. Each of the RF radiator(s) comprises a metalized outer wall and at least one metalized axial ridge extending along an inner surface of the outer wall. The method further comprises sintering the metalized ceramic material to create a monolithic structure comprising the RF waveguide and RF radiator, and operatively coupling RF circuitry to the RF waveguide(s).

5-6 GHz wideband dual-polarized MIMO array antennas are disclosed. The antennas comprise a double layered PCB, a single layered PCB and a plurality of microstrip patch antennas. The microstrip patches are radiating elements which are coupled to apertures in the ground plane. The aperture coupling avoids the need for complex multi-layered boards with plated via holes. Standard SMA connectors can be used with the array antenna.

An antenna-in-package (AiP) module is described. The AiP module includes an antenna sub-module. The antenna sub-module is composed of a first package substrate including an antenna side surface having a first group of antennas placed along a first portion of the antenna side surface and a second group of antennas placed along a second portion of the antenna side surface. The first package substrate is composed of a non-linear portion between the first group of antennas and the second group of antennas. The AiP module includes an active circuit sub-module placed on an active side surface of the first package substrate opposite the first group of antennas or the second group of antennas on the antenna side surface of the first package substrate.

In accordance with one or more embodiments, a guided wave launcher includes an array of antennas configured to generate near field signals. A controller is configured to: select, in response to a first control signal, at least one of a plurality of guided wave modes; and adjust beam steering parameters of the array of antennas according to the selected one(s) of the plurality of guided wave modes. The near field signals combine to induce a guided electromagnetic wave having the selected one(s) of the plurality of guided wave modes, wherein the first guided electromagnetic wave is guided by the transmission medium and propagates along the transmission medium without requiring an electrical return path.

The present invention introduces a new phased array, called the peripherally-excited phased array (PEX-PA). The PEX-PA comprises an electrically large metallic cavity which is excited by weighted antenna sources only at its periphery. The top surface of the cavity is patterned with a suitable configuration of apertures (slots) whereas the cavity is filled with a dielectric material. The (PEX-PA) is capable of beam scanning, one or multiple beams, over a large number of directions in air but with a drastically reduced number of passive or active phase shifters. Specifically, the PEX-PA scales the number of phase-shifters according to the circumference of the cavity and not its area, as usually the case in a conventional phased array.

A display device includes: a substrate having a display area and a non-display area at a periphery of the display area; at least one unit antenna disposed in the non-display area on the substrate and having a coplanar wave guide structure; and a communication circuit unit transmitting and receiving a communication signal with the at least one unit antenna.

A radar system including a circuit board and a molded part having an antenna, wherein the connection between an emitting or receiving element of a high-frequency component and the antenna on an upper side of the molded part is realized by inner waveguides, the emitting or receiving element configured to emit in the direction or receive from the direction of the circuit board, the circuit being permeable by radar waves in the region of the emitting or receiving element, the molded part being arranged on a side of the circuit board opposite the high-frequency component and partially and conductively connected to said circuit board, at least one hollow waveguide is formed by a depression on the side of the molded part facing the circuit board and a metallized surface of the circuit board, and said at least one waveguide is fed from a permeable location of the circuit board.