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Broadband duplexer suitable for full W wave band

A wideband duplexer and duplexer technology, applied in waveguide devices, electrical components, circuits, etc., can solve the problems of complex structure of duplexer, difficult processing and high return loss, and achieve low return loss, The effect of reducing processing difficulty and widening working bandwidth

Pending Publication Date: 2021-12-21
NANJING UNIV OF INFORMATION SCI & TECH
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Problems solved by technology

[0003] As one of the key devices in the multi-band wireless communication system, the multiplexer has the characteristics of separating or combining signals in different frequency bands, and is widely used. The traditional duplexer has a complex structure, difficult processing and realization, and low isolation. high loss

Method used

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  • Broadband duplexer suitable for full W wave band
  • Broadband duplexer suitable for full W wave band
  • Broadband duplexer suitable for full W wave band

Examples

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Embodiment 1

[0049] The specific processing size is as Figure 5 , Figure 6 , Figure 7 As shown, in order to facilitate testing, P1 and P3 are loaded with a section of standard waveguide transmission line, P2 and P4 are loaded with a section of 90° elbow with an inner radius of 1.27mm and an outer radius of 2.54mm; in order to facilitate processing, the cavity in the model is designed at a right angle All are rounded with a radius of 0.25mm.

[0050] The duplexer adopts the E-plane cracked waveguide structure, that is, the overall cavity structure is split into two symmetrical structures by the E-plane, which are respectively processed on two metal blocks, and the metal blocks are combined up and down, and fixed by pins to form a closed cavity body. First, traditional CNC technology is used to mill out symmetrical structures on two aluminum blocks, and after completion, the gold plating process is performed. The size of the overall duplexer is W×L×H=24mm×46mm×20mm. A standard UG-387 ...

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Abstract

The invention discloses a broadband duplexer suitable for a full W wave band. The broadband duplexer comprises hybrid networks, high-pass filters, a standard rectangular waveguide input port P1, two standard rectangular waveguide output ports P2 and P3, and a standard rectangular waveguide isolation port P4, adopts a hybrid network type duplexer structure, and is connected with the two high-pass filters through the two hybrid networks; coupling of the straight waveguide and the coupling waveguide is introduced through a gap small hole; the waveguide high-pass filters are adopted, and a filtering function is obtained through a straight waveguide; and through a transition structure of two sections of waveguides with different heights, coupling of a standard waveguide and the straight waveguide is introduced. According to the broadband duplexer, the 90-degree hybrid network structure is adopted, the excellent performance of high isolation and low return loss is obtained, the mutual influence between channels is effectively weakened, the working bandwidth is widened, and the low-loss performance is achieved; and the duplexer adopts an E-plane split processing mode, is easy to integrate with a W-band E-plane split type solid-state system, and is low in processing difficulty.

Description

technical field [0001] The invention relates to the field of millimeter wave radio frequency circuits, in particular to a broadband duplexer suitable for all W bands. Background technique [0002] With the rapid development of wireless communication and the increasingly crowded spectrum resources, the communication system puts forward high requirements for the development trend of multi-band full coverage and multi-band complementary applications. best solution. Millimeter waves and terahertz frequency bands are candidates for high-frequency communication. W-band is a millimeter wave located on the edge of the terahertz low-frequency band. It is an important window frequency in the terahertz frequency band and is very important for the research of next-generation wireless / mobile communication systems. significance. [0003] As one of the key devices in the multi-band wireless communication system, the multiplexer has the characteristics of separating or combining signals i...

Claims

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Application Information

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IPC IPC(8): H01P1/20
CPCH01P1/20
Inventor 丁江乔雷雅淋赵芸
Owner NANJING UNIV OF INFORMATION SCI & TECH
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