公开(公告)号：US20240405444A1

公开(公告)日：2024-12-05

申请号：US18686353

申请日：2022-08-25

Applicant: TEKNOLOGIAN TUTKIMUSKESKUS VTT OY

Inventor： Mikko VARONEN ,  Dristy PARVEG ,  Pekka RANTAKARI ,  Antti LAMMINEN ,  Vladimir ERMOLOV ,  Jussi SÄILY ,  Timo KARTTAAVI

IPC: H01Q21/00 ,  H01Q1/22 ,  H01Q3/36 ,  H04B7/06

Abstract: The present invention relates to a modular architecture for transmitting and/or receiving radio frequency (RF) signals using a phased antenna array. A first portion of the RF signal is transmitted/received by a master IC (21) and a second portion of the RF signal is transmitted/received by a plurality of satellite ICs (22). RF distribution between the master IC (21) and the satellite ICs (22) occur over a low-RF-loss interposer (51). The master IC (21) performs upconversion/downconversion between RF signal and a baseband or intermediate frequency signal.

公开(公告)号：US20220166122A1

公开(公告)日：2022-05-26

申请号：US17440523

申请日：2020-03-17

Applicant: TEKNOLOGIAN TUTKIMUSKESKUS VTT OY

Inventor： Mikko VARONEN ,  Antti LAMMINEN

IPC: H01P5/16 ,  H01L23/66

Abstract: A hybrid millimeter-wave Wilkinson divider comprises an input port (1), a first output port (2), a second output port (3), and transmission lines connecting the input port (1) to the first and second output ports (2, 3) implemented by transmission lines in a carrier substrate (PCB, 31). An isolation resistor of the Wilkinson divider connected between the first and second output ports (2, 3) is integrated in a monolithic micro-wave integrated circuit (MMIC) chip (40) installed on the carrier substrate. On the MMIC chip the isolation resistor is connected between RF input metal pads. A compensation circuit for parasitic capacitances caused by the RF input metal pads is provided on the MMIC chip (40) so that the on-chip resistor appears as a pure resistance to the output ports (2, 3) of the Wilkinson divider on the carrier substrate (PCB, 31).

公开(公告)号：US20210270881A1

公开(公告)日：2021-09-02

申请号：US17260825

申请日：2019-07-17

Applicant: TEKNOLOGIAN TUTKIMUSKESKUS VTT OY

Inventor： Mikko VARONEN ,  Henrik FORSTEN ,  Jan SAIJETS

IPC: G01R29/08 ,  H03F3/19 ,  H03F1/56 ,  G01R35/00

Abstract: An active noise source apparatus includes a pair of a first and second switched-biased noise amplifier branches (22, 23). A directional coupler (24) having a pair of input ports (3, 4) connected to combine the noise outputs from the first and second switched-biased noise amplifiers. One output port (4) of the directional coupler (24) is connected to a matched termination (Rtermination) and another output port (2) of the directional coupler (24) is connected to an output (25) of the active noise source.