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Novel ultra wide band (UWB) Wilkinson power allocator

A power divider and power divider technology, which is applied to waveguide-type devices, electrical components, connecting devices, etc., can solve the problems of long circuits, large size of butterfly stubs, unsuitable for miniaturization of electronic components, etc., and achieve compact structure. , the effect of structure miniaturization

Inactive Publication Date: 2018-08-28
NANJING UNIV OF POSTS & TELECOMM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the butterfly stub currently used has a large volume and a long transmission circuit, which is not suitable for the miniaturization of electronic components.

Method used

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  • Novel ultra wide band (UWB) Wilkinson power allocator
  • Novel ultra wide band (UWB) Wilkinson power allocator
  • Novel ultra wide band (UWB) Wilkinson power allocator

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Embodiment Construction

[0020] The technical solutions of the present invention will be further described in detail below with reference to the accompanying drawings.

[0021] figure 1 The schematic diagram of the UWB power divider proposed in this patent is shown. Compared to existing UWB power splitters, the single open stub of each quarter-wave branch line is replaced by an overlapping butterfly stub, resulting in a smaller circuit size and two quarter-wave transmission lines The circuit length θ 1 and θ 2 shorter, as in figure 1 . Second quarter wavelength transmission line Z 2 Used for impedance matching with butterfly stubs.

[0022] The impedance of the input and output ports are both 50Ω, and the characteristic impedance of the two quarter-wave transmission lines is Z 1 = Z 2 = 75°, the electrical length of the transmission line is θ 1 =58.5º and θ 2 =7.8º. The branch transmission line of the UWB power divider is shorter and smaller than the power divider of the traditional 90° ...

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Abstract

The invention proposes a novel ultra wide band (UWB) Wilkinson power allocator. The novel UWB Wilkinson power allocator is characterized in that an overlapped butterfly-shaped stub line is arranged oneach one fourth wavelength branch of a power divider to build a new structure, and a resistor is connected between the overlapped butterfly-shaped short stub line on each branch and an output port ofthe power divider and is used for isolation. Compared with a traditional structure, the structure has the advantages that the size is only 18 millimeters by 16 millimeters, and the circuit lengthes of the two one fourth wavelength transmission lines are shorter; the bandwidth is expanded by connecting two short lines at an arbitrary side of each transmission line to form the butterfly-shaped stubline and adjusting radius, width and angle of the stub line; meanwhile, the structure is compact and miniature by changing the overlapped butterfly-shaped stub line on layout; and simulation and testresults of the UWB power allocator are favorably consistent.

Description

technical field [0001] The invention relates to a novel UWB Wilkinson power divider, which belongs to the field of electronic devices. Background technique [0002] Modern ultra-wideband (UWB) wireless communication systems require their radio frequency components to operate in the UWB frequency band. Therefore, components operating between 3.1 GHz and 10.6 GHz are of great research interest. UWB power dividers are one of the most useful components in various RF and microwave circuits. [0003] In recent years, many new power dividers suitable for UWB have been proposed. Recently, a stub-based UWB power divider has been developed, and it exhibits good power distribution performance in the UWB frequency band. The current state of the art has shown that butterfly stubs connected to microstrip lines have wider bandwidth characteristics than single stubs. [0004] However, the butterfly-shaped stubs currently used are bulky and have long transmission circuits, which are not ...

Claims

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Application Information

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IPC IPC(8): H01P5/16
CPCH01P5/16
Inventor 黄龄萱王柠琳李修贤周波
Owner NANJING UNIV OF POSTS & TELECOMM
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