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Wilkinson divider

A divider and metal pad technology, applied in the field of millimeter wave Wilkinson divider and millimeter wave phased array, can solve the problems of power loss, expensive MMIC area, consumption, etc.

Pending Publication Date: 2021-11-09
TEKNOLOGIAN TUTKIMUSKESKUS VTT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] However, the problem with such on-chip power splitters is that they consume expensive MMIC area and additionally may result in additional power loss due to the additional wiring required between phased array elements

Method used

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  • Wilkinson divider
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Embodiment Construction

[0041] One aspect of the invention is a hybrid Wilkinson power splitter or splitter that uses a carrier substrate or board for transmission line routing and monolithic millimeter wave integrated circuit (MMIC) technology for resistor implementation. The transmission lines may be implemented in various alternative structures such as microstrip lines, striplines, coplanar waveguides (CPW), and the like. In example embodiments, the transmission lines are primarily implemented using microstrip lines, but embodiments of the invention are not limited to the use of microstrip lines. A variety of different types of technologies such as printed circuit boards (PCBs), low temperature co-fired ceramics (LTCCs), integrated passive devices (IPDs), quartz wafers, etc. can be used to fabricate carrier substrates or substrates suitable for embodiments of the present invention. board (which can also be referred to as an RF platform). Exemplary embodiments herein will be described and illustra...

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Abstract

A hybrid millimeter-wave Wilkinson divider comprises an in-put 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).

Description

technical field [0001] The present invention relates to millimeter wave devices, and in particular to millimeter wave Wilkinson splitters and millimeter wave phased arrays. Background technique [0002] The use of a three-port power splitter is especially important for antenna array systems utilizing power split networks such as cooperative or parallel feed systems. Coordination is simply a strategy of splitting power among n output ports with some distribution while maintaining equal path lengths from input to output ports. It can be implemented with n-way power splitters where three-port power splitters are often used. [0003] A Wilkinson power divider is a three-port network that is lossless when the output ports are matched; only reflected power is dissipated. It is possible to split the input power into two or more in-phase signals with the same amplitude. as in figure 1 As illustrated in , the Wilkinson splitter circuit may consist of two quarter-wavelength (λ / 4) ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L23/66H01P5/16
CPCH01L23/66H01P5/16H01L2223/6683H01L2223/6627H01C7/006H01L27/00H01P5/02H01P5/19H01Q21/0006H01Q21/0075H01Q21/06H03H7/487
Inventor 米科·瓦罗宁安蒂·拉米宁
Owner TEKNOLOGIAN TUTKIMUSKESKUS VTT
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