Four-path orthogonal signal generator based on E-type resonators

A quadrature signal and resonator technology, applied in the field of four-way quadrature signal generator, can solve the problems of complex design structure, large amplitude difference, large size, etc., and achieve the effect of low production cost, small phase deviation and simple structure

CN113937452AActive Publication Date: 2022-01-14NANJING UNIV OF POSTS & TELECOMM
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2022-01-14

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Abstract

The invention discloses a four-path orthogonal signal generator based on E-type resonators, which comprises a dielectric plate (2), a metal floor (1) positioned on the lower surface of the dielectric plate, an input port feeder line (3) positioned on the upper surface of the dielectric plate, a second output port feeder line (4), a third output port feeder line (5), a fourth output port feeder line (6), a fifth output port feeder line (7), a first E-type resonator (8) and a second E-type resonator (9). Each of the first E-type resonator and the second E-type resonator comprises a half-wavelength resonator (81, 91) and a symmetry plane branch knot loading unit (82, 92). One end of the fourth output port feeder line (6) is connected with the metal floor (1) through a metal through hole (10) penetrating through the dielectric plate (2), and one end of the fifth output port feeder line (7) is connected with the metal floor (1) through a metal through hole (11) penetrating through the dielectric plate (2). The device is compact in structure, small in phase deviation, low in loss, low in cost and suitable for a modern wireless communication system.
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Description

technical field

[0001] The invention relates to the technical field of microwave passive devices, in particular to a four-way orthogonal signal generator based on an E-type resonator. Background technique

[0002] In recent years, with the development of modern wireless communication technology, orthogonal signals are widely used in wireless communication equipment in various fields. For example, in the field of antennas, circularly polarized antennas sometimes require orthogonal signals to feed them. Therefore, low cost, compact structure, low loss, and small phase deviation have become very important considerations in the design of quadrature signal generators. In order to achieve these design goals, how to generate quadrature signals has become a research hotspot at home and abroad. At present, the most common signal transmission line in microwave integrated circuits is microstrip line, which has the characteristics of small size, easy integration, easy application, and ...

Examples

Embodiment 1

[0033] The structure diagram of the four-way quadrature signal generator based on the E-type resonator is as follows: figure 1 As shown, the top view is as figure 2 As shown, the relevant dimensions and specifications are as follows image 3 shown. The dielectric plate 2 used has a relative permittivity of 3.55, a thickness of 0.508 mm, and a loss tangent of 0.0027. to combine image 3 , the size parameters of the four-way quadrature signal generator are as follows: W=1.18mm, L=3mm, W 1 = 0.31mm, W 2 = 0.23mm, W 3 = 1 mm, L 1 =19.2mm,L 2 =22.1mm,L 3 =9.2mm,L 4 = 4mm, L 5 = 2mm, L 6 =1.2mm, S=0.18mm, G=0.3mm, G 1 = 0.42mm, G 2 = 0.21 mm. The overall total area of ​​the four quadrature signal generators is 31.81×35mm 2 .

[0034] The quadrature signal generator of this example is modeled and simulated in the electromagnetic simulation software HFSS.15. Figure 4 It is the S-parameter simulation diagram of the four-way orthogonal signal generator in this example...