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Push-push type oscillator based on microstrip differential band-pass filter

A technology of oscillators and filters, applied in power oscillators, waveguide devices, electrical components, etc., can solve the problems of high phase noise, low quality factor, and poor selectivity of oscillators, and achieve low phase noise and high quality factor , highly selective effect

Active Publication Date: 2019-10-25
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In summary, the problems with the prior art are: high oscillator phase noise, low quality factor, poor selectivity

Method used

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  • Push-push type oscillator based on microstrip differential band-pass filter
  • Push-push type oscillator based on microstrip differential band-pass filter
  • Push-push type oscillator based on microstrip differential band-pass filter

Examples

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Embodiment Construction

[0021] like figure 1 As shown, the push-push type oscillator based on the microstrip differential bandpass filter of the present invention includes a rectangular dielectric substrate 1, a metal ground layer 2 attached to the lower surface of the dielectric substrate 1, and a differential differential placed on the upper surface of the dielectric substrate 1. Filter 3, power combiner 4, first amplifier input and output matching circuit 5 and second amplifier input and output matching circuit 6;

[0022] The power combiner 4 is connected to the differential filter 3 through the first and second amplifier input and output matching circuits 5 and 6 .

[0023] like figure 2 As shown, the differential filter 3 includes an input microstrip line 31, an output microstrip line 32, a first microstrip rectangular line 301, a first connecting microstrip line 311, a second microstrip rectangular line 302, a second connecting microstrip line Strip line 321, third microstrip rectangular li...

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Abstract

The invention discloses a push-push type oscillator based on a microstrip differential band-pass filter. The push-push type oscillator comprises a rectangular dielectric substrate (1), a metal grounding layer (2) attached to the lower surface of the dielectric substrate (1), a differential filter (3) arranged on the upper surface of the dielectric substrate (1), a power combiner (4), a first amplifier input and output matching circuit (5) and a second amplifier input and output matching circuit (6). And the power combiner (4) is connected with the differential filter (3) through the first andsecond amplifier input and output matching circuits (5, 6). The push-push type oscillator based on microstrip differential band-pass filter is low in phase noise, high in fundamental wave suppressionlevel, high in quality factor and good in selectivity.

Description

technical field [0001] The invention belongs to the technical field of oscillators, in particular to a push-push type oscillator based on a microstrip differential bandpass filter with low phase noise, high fundamental wave suppression level, high quality factor and good frequency selectivity. Background technique [0002] Oscillators are one of the important signal sources of radio systems. They are widely used in microwave communication, radar navigation, electronic countermeasures, satellite communication, ballistic guidance and other systems. They are indispensable and important devices in microwave and millimeter wave systems. The quality of its phase noise performance often directly affects the performance index of the entire communication system. [0003] The push-push oscillator can suppress the fundamental frequency well, and the output is the second harmonic frequency, which greatly expands the usable frequency range of active devices. The push-push oscillator is ...

Claims

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Application Information

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IPC IPC(8): H03B5/12H01P1/203H01P5/12
CPCH03B5/1228H01P1/2039H01P5/12
Inventor 康炜杜晨阳张皓林军梁琴琴
Owner NANJING UNIV OF SCI & TECH
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