Balanced type frequency tripler of substrate integrated waveguide (SIW)

A substrate-integrated waveguide and frequency tripler technology, applied in the direction of power oscillators, electrical components, etc., can solve the problems of increasing circuit complexity and implementation difficulty, reducing gain and output power, and affecting tube matching characteristics. Achieve the effects of easy implementation, large gain and output power, and simple circuit form

Active Publication Date: 2012-02-08
XIAN INSTITUE OF SPACE RADIO TECH
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Problems solved by technology

But the traditional balanced tripler also has its inherent disadvantages, namely; (1) a bridge with a bandwidth of three octaves is extremely difficult to realize, so the theory mentioned in the previous paragraph is extremely difficult to realize
It is generally necessary to apply other methods to suppress the fundamental and second harmonics; (2) The commonly used parallel open-circuit microstrip lines (fundamental and second harmonic reflection stubs) increase

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  • Balanced type frequency tripler of substrate integrated waveguide (SIW)
  • Balanced type frequency tripler of substrate integrated waveguide (SIW)
  • Balanced type frequency tripler of substrate integrated waveguide (SIW)

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Embodiment Construction

[0034] like Figure 7 As shown, the present invention includes an input 3dB bridge, namely bridge 1, which works on the fundamental frequency band; two symmetrical frequency multiplier circuits; an output SIW 3dB bridge, namely bridge 2, which works on the output triple frequency band, and It has the characteristics of equal amplitude division and 90° phase difference; the input port of the bridge 1 is the RF signal input end, and the two output ports divide the input signal equally, and the two output signals have a phase difference of 90°; the bridge 1 has a phase difference of 90°. The two output ports of 1 are connected to two symmetrical frequency multiplier circuits for frequency multiplication; the output ends of the two symmetrical frequency multiplier circuits are connected to the two input coupling ends of the bridge 2; at the output SIW 3d In the B-bridge, the length and width of the SIW guided wave can be adjusted.

[0035]Selecting an appropriate SIW guided wave ...

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Abstract

The invention provides a balanced type frequency tripler structure of a substrate integrated waveguide (SIW). An SIW bridge is used at the output end of a balanced type frequency tripler, and a proper SIW width is selected to stop a base band and a secondary harmonic, thereby ensuring that the energies of the basic wave and the secondary harmonic can be reflected back to a field effective tube for reusing without adding any harmonic reflection unexpected difficulties; the guided wave length of the SIW bridge is properly adjusted, so that the base band and the secondary harmonic can be inhibited to reach a requirement, and the harmonic inhibiting index can be met without the addition of a harmonic inhibiting filter at the output end. The balanced type frequency tripler based on the design thought has the advantages of high efficiency of frequency multiplication, simple structure, low technological requirement and is applicable to high-frequency section.

Description

technical field [0001] The invention belongs to the technical field of microwave communication, and relates to a balanced frequency tripler structure of a substrate integrated waveguide (SIW). Background technique [0002] The frequency multiplier is a device used to multiply the fundamental frequency to the required harmonic frequency so that it can output the required harmonic power. [0003] figure 1 is the topology of a traditional single-terminal frequency multiplier, which includes active devices, matching and reflection branches. The design of field effect transistor (FET) frequency multiplier is mainly focused on three aspects: first, the extraction of the nonlinear model of the active frequency doubler device; second, the state of the device itself. That is to find a suitable harmonic generation state to make the active device generate the maximum required harmonics; the third is the design of the circuit network. That is to design a suitable input and output net...

Claims

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Application Information

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IPC IPC(8): H03B19/00
Inventor 杨飞于洪喜王婷霞张波王毅陈燕孙树风
Owner XIAN INSTITUE OF SPACE RADIO TECH
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