Frequency multiplier based on composite left/right handed non-linear transmission lines

A non-linear transmission line, left and right hand recombination technology, applied in the direction of waveguide devices, circuits, electrical components, etc., can solve the problems of limited and unable to suppress the fundamental wave signal, to suppress the fundamental wave power, simplify the structure of the frequency multiplier, reduce the volume effect

Active Publication Date: 2010-10-27
北京中科微投资管理有限责任公司
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Problems solved by technology

There are some inherent defects in the traditional right-hand nonlinear transmission line: the equivalent circuit of the right-hand transmission line is a low-pass circuit, so the highest frequency of the output harmonic is less than the cut-off frequency of the transmission line, which is limited in high-frequency applications; the low-pass circuit itself cannot suppress the input fundamental wave signal, and the amplitude of the fundamental wave signal is often much larger than the harmonic signal. In order to obtain the ideal harmonic wave, high requirements are placed on the filter in the system

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  • Frequency multiplier based on composite left/right handed non-linear transmission lines
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  • Frequency multiplier based on composite left/right handed non-linear transmission lines

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[0030] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following further describes the present invention in detail with reference to specific embodiments and drawings.

[0031] The characteristics of PIN diodes are as figure 1 As shown, when the diode is in the cut-off state, its section capacitance is a fixed value. When the input signal amplitude is greater than the diode turn-on voltage, the diode turns from cut-off to conduction, and its capacitance value changes suddenly. The above-mentioned nonlinear process is the basic principle of PIN diode generating harmonics. Therefore, PIN diodes are also commonly used devices in frequency multiplication circuits.

[0032] In recent years, a method of forming a left-handed material from a transmission line periodically loaded with series capacitance and parallel inductance has been proposed. Unlike the right-handed transmission line, E, H, and k in the left-handed transmission...

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Abstract

The invention discloses a frequency multiplier. The frequency multiplier is composed of at least a composite left/right handed non-linear transmission line unit. The composite left/right handed non-linear transmission line unit is formed by connecting a single left-handed non-linear transmission line and a single right-handed non-linear transmission line in series. In combination with the advantages of the left-handed non-linear transmission line and the right-handed non-linear transmission line, the invention can improve the working frequency and the frequency multiplying efficiency of the frequency multiplier.

Description

Technical field [0001] The present invention relates to the technical field of frequency multipliers, in particular to a frequency multiplier based on left and right-handed composite nonlinear transmission lines. Background technique [0002] Microwave frequency multipliers are widely used in systems such as communications, radars and measuring instruments. Its main functions can be summarized into the following aspects: 1. Frequency multiplication of the oscillator with low frequency but stable output frequency to obtain a high-frequency oscillation source with high stability; 2. The maximum oscillation frequency of the transistor oscillator cannot be reached. When the system requires, obtain the ultra-high frequency oscillation source through the frequency multiplier; 3. Obtain multiple integer multiple frequencies. [0003] Non-linear transmission line is a widely used frequency multiplier structure. It has the advantages of simple structure and no need for additional matching ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/213
Inventor 杨浩吴茹菲董军荣黄杰张海英
Owner 北京中科微投资管理有限责任公司
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