Quasi resonant type compound resonant circuit

A technology of resonant circuit and impedance circuit, applied in electrical components, impedance network, single-ended pair network, etc., can solve the problem of not being able to change the resonant frequency range

Inactive Publication Date: 2012-04-18
MARCDEVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] That is, with this type of composite resonance circuit, the resonance frequency range cannot be changed unless the circuit constant of the resonance element or the non-resonance element is changed

Method used

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  • Quasi resonant type compound resonant circuit
  • Quasi resonant type compound resonant circuit
  • Quasi resonant type compound resonant circuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0029] figure 1 Embodiment 1 of the composite resonance circuit of the present invention is shown. like figure 1 As shown, the composite resonant circuit 1 includes: an input terminal 3; a resonant circuit 6 having input terminals TR11, TR12 and input terminals TR21, TR22 of the first and second ports, and responding to the input terminals respectively provided to these ports and resonate with an AC signal; and first and second phase control circuits 4 and 5 that perform different phase shifts on the AC signal supplied to the input terminal 3 to the first port The terminal and the second port terminal provide first and second shifted signals, respectively, which are phase shifted. The resonance circuit 6 is an impedance circuit having four input terminals TR11, TR12 and TR21, TR22 forming first and second ports, and responds to the first and second shift signals coming through the first and second ports at Quasi-resonant peak currents are generated at non-zero reactance.

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Embodiment approach 2

[0042] Below, we will use image 3 and Figure 4 The composite resonant circuit according to the present invention will be described. will be described in further detail in image 3 The components of the composite resonant circuit 1 are shown in . as figure 1 , image 3 The input terminal 3 of the composite resonant circuit 1 is connected to a standard signal generator SG (not shown), and the output power is kept constant and an input signal of frequency f continuously pushed is applied to the input terminal 3 of the composite resonant circuit 1 . This input signal is supplied to each of the input terminal T1 of the first phase control circuit 4 and the input terminal T2 of the second phase control circuit 5 .

[0043] The first phase control circuit 4 has an input terminal T1 and phase control output terminals TD11 , TD12 , TD13 , and TD14 . Input terminal T1 is connected to input terminal 3; Phase control output terminal TD11 is connected to TR11 of resonance circuit 6...

Embodiment approach 3

[0055] will be described in detail in Figure 5 Components of the composite resonant circuit 1 shown in . Figure 5 The input terminal 3 of the composite resonant circuit 1 is connected to a standard signal generator SG (not shown), as figure 1 , and the input signal whose output power is kept constant and the frequency f is continuously pushed-broom is applied to the input terminal 3 of the composite resonant circuit 1 . The input signal is supplied to each of the input terminal T1 of the first phase control circuit 4 and the input terminal T2 of the second phase control circuit 5 .

[0056] According to the Figure 5 The functions and the like of the first phase control circuit 4 and the second phase control circuit 5 of Embodiment 3 shown in Figure 4 are identical to those of the embodiments shown in and are provided to Figure 5 The phase relationship between the phase-shifted signals of the first port and the second port of the resonant circuit 6 shown in is also the...

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Abstract

Disclosed is a compound resonant circuit, wherein the resonant frequency is variable over a wide frequency range even without changing the circuit constants of a non-resonant element having no resonant frequency. The compound resonant circuit includes an input terminal, a resonant unit which has a first and a second port and generates quasi resonance in response to AC signals fed to these ports, and a phase shift circuit which gives phase shifts, different from each other, to the AC signals fed to the input terminal and feeds first and second shift signals after the phase shift to the first port and second port respectively. The resonant unit is an impedance circuit which comprises at least four input terminals which form the first and second ports, and generates a quasi resonant peak current, under non-zero reactance, in response to the first and second shift signals arriving by the first and second ports. The quasi resonant peak current is variable based on the frequency and phase shift amount of the AC signals. That is, the resonant frequency can be made variable.

Description

technical field [0001] The present invention relates to a composite resonant circuit, and more particularly to a composite resonant circuit in which a quasi-resonant peak current is generated without using a resonant element having a resonant frequency and the resonant frequency is variable. Background technique [0002] Regarding electronic components such as piezoelectric oscillators having a natural resonant frequency, the method of connecting a reactive element to a resonant circuit such as a series LC resonant circuit or a parallel LC resonant circuit is used to change their zero-phase frequency (ie, resonant frequency) known methods. Therefore, the resonance frequency range cannot be changed arbitrarily unless the circuit constant of the resonance circuit is changed. Meanwhile, Patent Document 1 discloses an RC polyphase filter including four input terminals for receiving four-phase signals having a phase difference of 90° and a circuit for outputting the four-phase s...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): H03H5/02
CPCH03H2007/0192H03H7/21
Inventor平间宏一
OwnerMARCDEVICES