Active quasi circulator with high power utilization rate

A utilization rate and high power technology, applied in waveguide devices, electrical components, circuits, etc., can solve the problem of low signal power utilization and achieve the effect of improving transmission gain

Inactive Publication Date: 2018-09-14
XIDIAN UNIV
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Problems solved by technology

[0005] The object of the present invention is to propose a kind of active quasi-circulator of high power utilization rate for the above-mentioned deficiencies in the prior art, for solving the technical problem that the power utilization rate of the transmitting signal of the existing active quasi-circulator is low

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  • Active quasi circulator with high power utilization rate
  • Active quasi circulator with high power utilization rate
  • Active quasi circulator with high power utilization rate

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Embodiment Construction

[0023] Below in conjunction with accompanying drawing and specific embodiment, the present invention is described in further detail:

[0024] refer to figure 1 , an active quasi-circulator with high power utilization, including a metal ground plate 2 printed on one surface of a dielectric substrate 1, and a power amplifier 3 and a power divider 4 printed on the other surface of a dielectric substrate 1 and an active power combiner5. Wherein, the dielectric constant of the dielectric substrate 1 is 3.2.

[0025] refer to figure 1 , the power amplifier 3 includes a grid matching circuit and a bias circuit and a drain matching circuit and a bias circuit, wherein the bias circuit is composed of a 90-degree sector and a quarter-wavelength transmission line connected to the central angle of the sector , where the fan-shaped radius is 5.2mm, the bias circuit uses a transmission line with the same width as the quarter-wavelength transmission line to connect to the bias power supply...

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Abstract

The invention provides an active quasi circulator with a high power utilization rate, so as to solve the technical problem of a low transmission signal power utilization rate of the existing active quasi circulator. The active quasi circulator with a high power utilization rate comprises a dielectric substrate, a metal grounding plate printed on one surface of the dielectric substrate, a power amplifier on the other surface, a power divider and an active power combiner, wherein the input end of the power divider is connected with the output end of the power amplifier, the upper arm of the output end is connected with the gate of the active power combiner and the lower arm is connected with the source of the active power combiner; and the power divider adopts a wilkinson unequal power divider, the width dimensions of the upper arm and the lower arm are determined by calculating the respective characteristic impedance of the two arms with a set power ratio, the width of the upper arm islarger than that of the lower arm so as to improve the transmission gains from a first port to a second port, and the electrical lengths of the two arms are both 90 DEG.

Description

technical field [0001] The invention belongs to the technical field of electronic devices, and relates to a microwave active quasi-circulator, which can be used for a radio frequency front end of a wireless communication system. Background technique [0002] The circulator is a device of the microwave and millimeter wave system, which is used in the system where the transmitting and receiving antennas are shared to realize the isolation of transmitting and receiving. Circulators are classified into passive circulators and active circulators according to their constituent materials. Traditional passive circulators are made of ferrite materials, require an external magnetic field, have large power capacity, and are large in size and weight. They cannot be integrated with radio frequency systems, and cannot meet the needs of miniaturization and light weight in the development of today's wireless systems. . The active circulator realizes one-way transmission of signals, that i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/38
CPCH01P1/38
Inventor 苏涛胡英英李里樊小毛许伟骞
Owner XIDIAN UNIV
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