Abstract: The filter unit has a center frequency and comprises a first dielectric substrate, a first conducting plane, and at least one transmission arrangement. The at least one transmission arrangement comprises a shunt node which has a shunt connection to the conducting plane. The electrical length of the shunt connection defines the center frequency of the filter unit. The transmission arrangement further comprises a plurality of transmission lines connected in series between an input port and an output port, wherein each port is connectable to auxiliary systems with a system impedance. Moreover, each transmission line has a characteristic impedance and wherein the characteristic impedance of each transmission line is less than the system impedance.

Abstract: The filter unit has a center frequency and comprises a first dielectric substrate, a first conducting plane, and at least one transmission arrangement. The at least one transmission arrangement comprises a shunt node which has a shunt connection to the conducting plane. The electrical length of the shunt connection defines the center frequency of the filter unit. The transmission arrangement further comprises a plurality of transmission lines connected in series between an input port and an output port, wherein each port is connectable to auxiliary systems with a system impedance. Moreover, each transmission line has a characteristic impedance and wherein the characteristic impedance of each transmission line is less than the system impedance.

Abstract: A power circuit suitable for combining or splitting broadband signals. The circuit includes a stepped impedance section, a core section and a first, second and third port. The stepped impedance section and the core section are interconnected at an interconnection. The stepped impedance section includes a first transmission line running from the first port to the interconnection. The core section includes a second and a third transmission line running from the interconnection to the second and third ports, respectively. The second and third transmission lines each have at least a first and a second core subsection. The number of core subsections of the second transmission line and the number of core subsections of the third transmission line is equal, to the number of stepped impedance subsections of the stepped impedance section.

Abstract: A power circuit suitable for combining or splitting broadband signals. The circuit includes a stepped impedance section, a core section and a first, second and third port. The stepped impedance section and the core section are interconnected at an interconnection. The stepped impedance section includes a first transmission line running from the first port to the interconnection. The core section includes a second and a third transmission line running from the interconnection to the second and third ports, respectively. The second and third transmission lines each have at least a first and a second core subsection. The number of core subsections of the second transmission line and the number of core subsections of the third transmission line is equal, to the number of stepped impedance subsections of the stepped impedance section.

Abstract: An active circulator for a microwave system. The microwave system includes at least one front-end arrangement. Each front-end arrangement includes a power amplifier function arranged to deliver an amplified output signal via a circulator function to an antenna in a transmit mode. A low noise amplifier function is arranged to amplify an input signal from the antenna via the circulator function in a receive mode. The circulator function is arranged to direct a signal flow between the transmit and receive modes. Each front-end arrangement includes one active circulator. The active circulator includes the power amplifier function, the low noise amplifier function and the circulator function of directing a signal flow. The functions integrated into one module. Also, a method to manufacture the active circulator.

Abstract: The present invention relates to a signal directing means for dividing or combining signals. It comprises a bottom row first port, a first row first and second port, and a bottom row signal connector. The signal directing means further comprises a first row first and second amplifier, each first row amplifier having a corresponding first and second terminal, said first terminals being connected along the bottom row signal connector. The signal directing means also comprises a first row signal connector, where said second terminals are connected along the first row signal connector. The second terminal of the first row first amplifier is connected to the first row first port and the second terminal of the first row second amplifier is connected to the first row second port. A plurality of second connector ports are also provided, with connecting impedances connecting between the respective ports.

Abstract: The present invention relates to a signal directing means (1, 1?, 1?, 36) for dividing or combining signals. It comprises a bottom row first port (2), a first row first and second port (3, 4),and a bottom row signal connector (5).The signal directing means (1, 1?,1?, 36) further comprises a first row first and second amplifier (9; 9?; 10; 10?), each first row amplifier (9, 10; 9?, 10?) having a corresponding first and second terminal (9a, 10a; 9a?, 10a; 9b, 10b; 9b?, 10b), said first terminals (9a, 10a; 9a?, 10a?) being connected along the bottom row signal connector (5). The signal directing means (1, 1?, 1?, 36)also comprises a first row signal connector (11), where said second terminals (9b, 10b; 9b?, 10b) are connected along the first row signal connector (11). The second terminal (9b; 9b?) of the first row first amplifier (9, 9?) is connected to the first row first port (3) and the second terminal (10b; 10b?) of the first row second amplifier (10; 10?) is connected to the first row second port (4).

Abstract: A distributed power amplifier arranged to operate over a bandwidth. An input side with an input terminal is arranged to receive an input signal and connected to an input transmission line. An output side with an output terminal is adapted to deliver an output signal and connected to an output transmission line. A power splitter is connected to the input terminal, thus being arranged to divide the input signal in a first path to the input transmission line and in a second path to an input of an active matching circuit. The active matching circuit has an output connected to the output transmission line. The other end of the output transmission line is connected to the output terminal. A method to design a distributed power amplifier and to modify existing distributed power amplifiers.

Abstract: An active circulator for a microwave system. The microwave system includes at least one front-end arrangement. Each front-end arrangement includes a power amplifier function arranged to deliver an amplified output signal via a circulator function to an antenna in a transmit mode. A low noise amplifier function is arranged to amplify an input signal from the antenna via the circulator function in a receive mode. The circulator function is arranged to direct a signal flow between the transmit and receive modes. Each front-end arrangement includes one active circulator. The active circulator includes the power amplifier function, the low noise amplifier function and the circulator function of directing a signal flow. The functions integrated into one module. Also, a method to manufacture the active circulator.

Abstract: A filter unit and a corresponding printed circuit board. The filter unit and the printed circuit board have been equipped with modified end portions being matched such that a number of filter units can be used on the printed circuit board without changing the printed circuit board.

Abstract: A distributed power amplifier arranged to operate over a bandwidth. An input side with an input terminal is arranged to receive an input signal and connected to an input transmission line. An output side with an output terminal is adapted to deliver an output signal and connected to an output transmission line. A power splitter is connected to the input terminal, thus being arranged to divide the input signal in a first path to the input transmission line and in a second path to an input of an active matching circuit. The active matching circuit has an output connected to the output transmission line. The other end of the output transmission line is connected to the output terminal. A method to design a distributed power amplifier and to modify existing distributed power amplifiers.

Abstract: An active input matrix balun and a method for the same. The matrix balun has one input transmission line with an RF-in terminal for receiving a single ended RF-in signal and a first output transmission line with a first RF-out terminal and an adjacent second output transmission line with a second RF-out terminal. Two balanced RF-out signals at the first and at the second RF-out terminal, where each RF-out signal has an amplitude level equal to or exceeding the amplitude level of the RF-in signal and where the RF-out signals have a mutual phase difference of 180° and are of equal amplitude levels.

Abstract: An active input matrix balun and a method for the same. The matrix balun has one input transmission line with an RF-in terminal for receiving a single ended RF-in signal and a first output transmission line with a first RF-out terminal and an adjacent second output transmission line with a second RF-out terminal. Two balanced RF-out signals at the first and at the second RF out terminal, where each RF-out signal has an amplitude level equal to or exceeding the amplitude level of the Rein signal and where the RF-out signals have a mutual phase difference of 180° and are of equal amplitude levels.