Abstract: A power divider and filter device includes one input port and several output ports, and is configured to make several cavities in which resonating posts are located, one post per cavity. The cavities communicate some with the others by means of openings. Cavities are arranged in such a way that and input signal incoming the input port propagates through the device by coupling. The cavities and the resonating posts are configured and arranged in such a way that, as it passes through the device, the input signal is, by one and a same operation, filtered and split in as many output signals as the outputs the device comprises, the energy of the input signal being spread out between the outputs.

Abstract: The invention relates generally to RF and microwave multiplexers implemented with a plurality of coupled resonators. More specifically, the present invention relates to multiplexers configured to require only a plurality of resonators and series, shunt, cross couplings and input/output couplings between them. It is a main feature of the invention that no microwave dividers, combiners, circulators, or other junctions are necessary for the distribution of microwave energy among the coupled resonators. This is achieved for example by a P-channel multiplexer comprising P rows of coupled resonators, a common input terminal connected to the first resonator of at least one of said rows, and P channel output terminals connected with the last resonator in each row, and at least one coupling between resonators belonging to different rows.

Abstract: A direct coupled resonator filter having a plurality of resonant cavities (15) such that they are separated by inner walls (18) and a coupling structure (16) couples two adjoining resonant cavities (15) since the coupling structure is located in a slot (20) defined in the inner wall (18). Thus, a portion of an edge of the slot (20) comes into electrical contact with the coupling structure (16). In general, this portion of the edge of the slot (20) corresponds to a horizontal edge surface of the inner wall (18). It should be noted that the coupling structure (16) is perpendicular to a vertical plane defined by the slot (20).

Abstract: The invention relates generally to RF and microwave multiplexers implemented with a plurality of coupled resonators. More specifically, the present invention relates to multiplexers configured to require only a plurality of resonators and series, shunt, cross couplings and input/output couplings between them. It is a main feature of the invention that no microwave dividers, combiners, circulators, or other junctions are necessary for the distribution of microwave energy among the coupled resonators. This is achieved for example by a P-channel multiplexer comprising P rows of coupled resonators, a common input terminal connected to the first resonator of at least one of said rows, and P channel output terminals connected with the last resonator in each row, and at least one coupling between resonators belonging to different rows.

Abstract: A microwave filter including a plurality of resonator cavities (1, 10) arranged in more than two adjacent rows and more than two adjacent columns; wherein each resonator cavity is coupled with at least a sequential adjacent resonator cavity for providing a main path for an electromagnetic energy to be transmitted from a first resonator cavity (1) to a last resonator cavity (10). The electromagnetic energy is injected into the first resonator cavity (1) by an input terminal (20) through an input coupling, and the electromagnetic energy is extracted from the last resonator cavity (10) by an output terminal (21) through an output coupling, and the first (1) and last (10) resonator cavities are non-sequential adjacent cavities.

Abstract: A direct coupled resonator filter having a plurality of resonant cavities (15) such that they are separated by means of inner (18) walls and a coupling (16) means couples two adjoining resonant cavities (15) since the coupling (169 means is located in a slot (20) defined in the inner (18) wall. Thus, a portion of an edge of the slot (20) comes into electric contact with the coupling (16) means. In general, this portion of the edge of the slot (20) corresponds to a horizontal edge surface of the inner (18) wall. It should be noted that the coupling (16) means is perpendicular to a vertical plane defined by the slot (20).

Abstract: A microwave filter comprising a plurality of resonator cavities (1, 10) arrangement in more than two adjacent rows and more than two adjacent colunms; each resonator cavity is coupled with at least a sequential adjacent resonator cavity for providing a main path for an electromagnetic energy to be transmitted from a first resonator cavity (1) to a last resonator cavity (10). The electromagnetic energy is injected in the first resonator cavity (1) by an input terminal (20) through an input coupling and the electromagnetic energy is extracted from the last resonator cavity (10) by an output terminal (21) through an output coupling, the first (1) and last (10) resonator cavities are non-sequential adjacent cavities.

Abstract: High performance microwave filter with monomode resonators, said filter having a resonant frequency that corresponds to an electromagnetic resonance mode of an hybrid electromagnetic family comprising electric and magnetic field patterns. The filter is characterised in that it is capable of producing perturbation in a respective electric field (a2; b2) of two of said adjacent resonators, giving rise to a coupling of relatively high magnitude between the unperturbed electric fields (a1; b1).

Abstract: High performance microwave filter with monomode resonators, said filter having a resonant frequency that corresponds to an electromagnetic resonance mode of an hybrid electromagnetic family comprising electric and magnetic field patterns. The filter is characterised in that it is capable of producing perturbation in a respective electric field (a2; b2) of two of said adjacent resonators, giving rise to a coupling of relatively high magnitude between the unperturbed electric fields (a1; b1).

Abstract: Microwave equalizer with internal amplitude correction, preferably for application in satellite communications, comprising at least one resonant cavity (2), at least one incoming signal injector (6) that projects into said resonant cavity (2) for injecting signal into said resonant cavity (2), and at least a first resistive tuner (5). The position of said first tuner (5) with respect to said injector (6) produces electromagnetic coupling between both tuner (5) and injector (6), giving rise to an amplitude attenuation effect in said signal. A variation in said relative position between said means the first resistive tuner and injector permits changing said attenuation in a selective manner. A second resistive tuner (7) can be used in combination with the first resistive tuner (5) to optimize the response of the equalizer.