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An ultra-wideband signal frequency band synthesis circuit and synthesis method

An ultra-wideband signal and frequency band synthesis technology, applied in the direction of multi-frequency modulation and conversion, can solve the problem of large loss, and achieve the effects of easy integration, solving spectrum deterioration, and simple manufacturing process

Active Publication Date: 2017-01-25
CHINA ELECTRONIS TECH INSTR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The high frequency of input signal 1 and the loss of input signal 2 are the coupling degree of the coupler, and the loss is relatively large

Method used

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  • An ultra-wideband signal frequency band synthesis circuit and synthesis method
  • An ultra-wideband signal frequency band synthesis circuit and synthesis method
  • An ultra-wideband signal frequency band synthesis circuit and synthesis method

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Embodiment 1

[0031] The present invention proposes a method for synthesizing frequency bands of ultra-wideband signals, such as Figure 4 As shown, the overall circuit is realized by using microstrip line 20 and discrete PIN diodes V1 and V2. The "Γ" shaped microstrip line in the right half of the figure is the lower electrode of the film capacitor 10 as a whole, and the "Γ" shaped microstrip line The upper rectangular part is the upper electrode of the thin film capacitor 10, and the upper and lower electrodes are insulating dielectric materials. Its schematic diagram is as Figure 5 shown. By controlling the on-off of the PIN diode and utilizing the transmission characteristics of microwave signals, the circuit of the present invention can synthesize the two signals of input signal 1 (frequency range: DC-F1) and input signal 2 (frequency range: F1-F2) into one output (Frequency range: DC-F2). The invention can be used for signal generating modules in electronic measuring instruments s...

Embodiment 2

[0045] On the basis of the foregoing embodiments, further, as Figure 4-Figure 5 As shown, an ultra-wideband signal frequency band synthesis circuit is provided, wherein a low-frequency signal input end, a high-frequency signal input end, and a signal frequency band synthesis output end are arranged on a flat insulating dielectric substrate; A film capacitor integrated in the microstrip line is provided; the microstrip line is also provided to connect the first PIN diode and the second PIN diode; the lower electrode of the film capacitor is directly connected to the low-frequency signal input terminal and the signal frequency band synthesis output terminal; the second A PIN diode and a second PIN diode are connected in series through the upper electrode of the film capacitor; the distance between the ground terminal of the second PIN diode and the center of the microstrip line at the signal frequency band synthesis output end is 1 / 4 of the center frequency of the high-frequency...

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Abstract

The invention provides an ultra-wideband signal frequency band synthesis circuit and a synthesis method. A low-frequency signal input end, a high-frequency signal input end and a signal frequency band synthesis output end adopting a micro-strip mode are arranged on a flat-plate-shaped insulating medium substrate. Thin-film capacitors integrated in micro-strip lines are further arranged on the flat-plate-shaped insulating medium substrate. Lower electrodes of the thin-film capacitors are directly communicated with the low-frequency signal input end and the signal frequency band synthesis output end. A first PIN diode and a second PIN diode are connected in series through upper electrodes of the thin-film capacitors. A distance between the grounding end of the second PIN diode and the center of a micro-strip line of the signal frequency band synthesis output end is a quarter of the guide wavelength of the center frequency of a high-frequency signal input signal. By adopting the scheme, the technical problems including frequency spectrum deterioration, large difference loss and the like in the ultra-wideband signal frequency band synthesis process are solved, and the ultra-wideband signal frequency band synthesis circuit has the advantages of being simple in manufacture process, capable of being easily mixed and integrated with other circuits and the like.

Description

technical field [0001] The invention belongs to the technical field of signal frequency band synthesis, and in particular relates to an ultra-wideband signal frequency band synthesis circuit and synthesis method. Background technique [0002] Since the 1980s, modern communication, electronic countermeasures and other technologies have put forward higher and higher requirements for the frequency stability, spectral purity and frequency range of microwave and millimeter wave signal sources. The frequency range of signal sources is getting wider and wider. Duanzheng continues to expand to lower frequency (DC) and higher frequency. For example, the frequency range of Agilent's 8257D signal source has covered 250kHz-70GHz, and the spectral purity is better than -45dBc when the signal is output above 10MHz. A single oscillator cannot meet the requirements at all. In order to realize the output of such ultra-wideband and high-purity spectrum signals, an ultra-wideband signal freque...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03D7/16
Inventor 刘金现马子腾柏栓
Owner CHINA ELECTRONIS TECH INSTR CO LTD