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Broadband phase shifting power divider with amplitude and phase compensating function

A technology of phase compensation and power divider, which is applied to waveguide devices, electrical components, connection devices, etc., can solve problems such as power division networks that have not been reported yet, and achieve the effect of improving public bandwidth

Inactive Publication Date: 2015-03-04
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] At present, there have been reported methods that can realize broadband power division or broadband phase shift alone, but there are few methods that can simultaneously realize broadband power division and broadband phase shift characteristics, and a power division network that can perform broadband compensation for any phase shift has not yet been developed. see the report

Method used

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  • Broadband phase shifting power divider with amplitude and phase compensating function
  • Broadband phase shifting power divider with amplitude and phase compensating function
  • Broadband phase shifting power divider with amplitude and phase compensating function

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Embodiment 1

[0031] The center frequency realized based on the present invention is that the topological structure of the 2.45GHz one-minute four-band phase-shifting power divider is as follows: figure 1 As shown, the amplitude unbalance of the output port 102, port 103, port 104, and port 105 is required to be ±0.25dB, and the phase unbalance is ±2.5°. The simulation results of the transmission coefficient and the difference between the output ports are as follows figure 2 , 3 As shown, the common bandwidth of its phase and amplitude reaches 36%. In the traditional scheme, the simulation results of the two-stage cascaded one-to-four Wilkinson power splitter with only the phase compensation structure and no inter-stage transmission line are as follows: Figure 4 , 5 As shown, the common bandwidth of its phase and amplitude is only 16%; the simulation results of the two-stage cascaded one-to-four Wilkinson power splitter with only the inter-stage transmission line and no phase compensati...

Embodiment 2

[0033] The design goal of this embodiment is to realize a one-to-eight power divider with equal output power of each port, and the phase difference between adjacent numbered output ports is 22.5°, wherein the amplitude imbalance is ±0.25dB, and the phase imbalance is ±2.5°. This embodiment adopts a microstrip transmission line, the relative permittivity of the dielectric substrate is 2.65, the thickness of the dielectric plate is 0.8mm, and the center frequency is 2.45GHz. Here, a cascade method of three-stage Wilkinson power division structure is adopted, from the first stage to the second stage The phase shifts of the three-stage power divider are 90°, 45°, and 22.5° respectively, and their topology is as follows Figure 8 As shown, the specific parameters of each part are as follows:

[0034] 1 is a 50 ohm input port transmission line, the corresponding microstrip line width is 2.2mm, and the length is 4mm;

[0035] 2, 4, 6, and 8 are 50-ohm microstrip transmission lines ...

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Abstract

The invention discloses a broadband phase shifting power divider with an amplitude and phase compensating function, and belongs to the technical field of microwaves. The cascaded Wilkinson power division scheme is adopted for the power divider, and the power divider is provided with (2m+1) (m is an integer greater than 1) ports, wherein the port 1 is an input port, and the ports 2 to (2m+1) are output ports. The power divider is capable of realizing 2m paths of outputs equal in amplitude and arbitrary in phase difference on an input signal, and has broadband characteristics. According to the broadband phase shifting power divider with the amplitude and phase compensating function, an interstage transmission line of a certain length is arranged between the stages of the cascaded Wilkinson power divider, and a parallel open circuit and (or) short circuit branches (branch) is loaded, and the common bandwidth of the amplitude and phase imbalance of the phase shifting power divider can be greatly increased by virtue of reasonable design of the parameters of the interstage transmission line and the branches; meanwhile, the broadband phase shifting power divider also has excellent port isolation and echo characteristics. The broadband phase shifting power divider with the amplitude and phase compensating function is applicable to the feed network of an array antenna, a balancing amplifying circuit and other microwave circuits and systems.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a broadband phase-shifting power divider with amplitude and phase compensation functions. Background technique [0002] Microwave power division network is a basic device in microwave engineering, and it is widely used in microwave circuits and systems. As a common form of power division network, the microwave power divider with phase shift function between each output port is also widely used. For example, the antenna in a mobile base station requires adjustable directivity of its main beam to achieve the best coverage to meet user needs. This requires the use of phased array antennas, and phase-shifting power dividers are an important part of realizing the functions of such antennas. [0003] The literature "Broadband Rat-Race Couplers With Coupled-Line Section and Impedance Transformers (Gruszczynski, S; Wincza, K.IEEE Microwave and Wireless Components Letters, 2012, 22...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P5/16H01Q3/34
Inventor 李家林赵洪杨雪松王秉中
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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