6-18GHz broadband equalizer circuit
An equalizer circuit and wideband technology, applied in the direction of electrical components, amplification control, gain control, etc., can solve the problems that cannot meet the needs of 6-18GHz ultra-broadband high-power solid-state power amplifiers to improve gain flatness, traveling wave tube uneven gain, Problems such as poor gain flatness, achieve the effect of simple structure, improved gain flatness, and easy implementation
Pending Publication Date: 2019-08-16
肖泽
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Problems solved by technology
[0003] The technical problem to be solved by the present invention is: the current ultra-broadband high-power solid-state power amplifier products that can work at 6-18 GHz, most of them have poor gain flatness, and the curve of the equalizer chip on the market is a single oblique line, which can only be used for Improving the uneven gain of the traveling wave tube cannot meet the problem of improving the gain flatness of the 6-18GHz ultra-broadband high-power solid-state power amplifier. ~18GHz ultra-broadband high-power solid-state power amplifier gain flatness
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[0024] Such as figure 1 As shown, the 6-18GHz broadband equalizer circuit includes a main line. One end of the main line is used as an input port and the other end is used as an output port 2. The input port 1 and the output port 2 are mutually compatible, and the input port 1 and the output port 2 can be Mutual exchange, where S21 is the insertion loss from input port 1 to output port 2, and S11 is the reflection coefficient of input port 1;
[0025] The main line is divided into five sections from left to right, and the five sections are connected in sequence. Resonant units are externally loaded between two adjacent sections. Each resonant unit includes a resistor and a resonant stub, and the resonant stub is connected to The main line; the entire equalizer circuit has a left-right symmetrical structure with the middle third section main line 13 as the axis;
[0026] A total of four resonant units are added from left to right, specifically including the first resonant unit, the ...
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The invention discloses a 6-18GHz broadband equalizer circuit which comprises a main line, one end of the main line serves as an input port, the other end of the main line serves as an output port, and the input port and the output port are reciprocal; the main line is divided into five sections from left to right, the five sections are sequentially connected, an open-circuit resonance unit is externally loaded between every two adjacent sections, each resonance unit comprises a resistor and a resonance branch, and the resonance branches are connected to the main line through the resistors; four resonance units are added from left to right, the four resonance units specifically comprise a first resonance unit, a second resonance unit, a third resonance unit and a fourth resonance unit, and the first resonance unit and the fourth resonance unit are the same; the second and third resonant units are the same. The equalizer adopts a resistance-loaded resonant branch structure, utilizes resonant units with different lengths to superpose and fit a complex equalization curve, has outstanding advantages compared with an existing equalizer chip, and can better meet the requirement of a 6-18GHz ultra-wideband high-power solid-state power amplifier for amplitude equalization.
Description
Technical field [0001] The invention relates to the technical field of equalizers, in particular to 6-18 GHz wideband equalizer circuits. Background technique [0002] As the core component of the microwave transmission system, the power amplifier is directly related to the operating distance, anti-interference ability and communication quality. A wider working frequency band can improve the adaptability of the system in different application environments. At present, ultra-wideband high-power solid-state power amplifier products that can work in 6-18GHz, most of which have poor gain flatness, and the current equalizer chip curve on the market is a single slope, which can only be used to improve the uneven gain of the traveling wave tube. It cannot meet the requirements of 6-18GHz ultra-wideband high-power solid-state power amplifiers to improve gain flatness. Summary of the invention [0003] The technical problem to be solved by the present invention is: current ultra-wideband ...
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IPC IPC(8): H03G3/30
CPCH03G3/3042
Inventor 肖泽
Owner 肖泽