A direct-current and alternating-current breaker and microwave active circuit

Abstract

The invention provides a direct-current and alternating-current breaker and a microwave active circuit. A first ground shell and a second ground shell of the direct-current and alternating-current breaker are oppositely arranged; a first coaxial connector of the coaxial connectors is arranged on the first ground shell, a second coaxial connector of the coaxial connectors is arranged on the secondground shell, and the first coaxial connector and the second coaxial connector are connected through a first blocking capacitor; the end, facing the second ground shell body, of the first ground shellbody is sunken to form a groove, the side, opposite to the first ground shell body, of the second ground shell body protrudes to form a protrusion, the protrusion is embedded into the groove, the protrusion and the groove are arranged at intervals to form a choke structure, and the length of the choke structure is odd times that of a quarter of the working wavelength of the direct-current and alternating-current breaker. According to the invention, the relative area between the first ground shell and the second ground shell can be increased, the power capacity and the withstand voltage valueof the isolator are improved, the transmission of an electromagnetic field in the ground shells is inhibited, the electromagnetic shielding performance of the isolator is effectively improved, and theproblem of electromagnetic leakage is solved.

Description

technical field [0001] The invention relates to the technical field of isolators, in particular to a DC-AC isolator and a microwave active circuit. Background technique [0002] At present, the isolator can block DC and AC low-frequency signals without affecting the transmission of radio frequency signals, and is an indispensable part of microwave active circuits. The isolator in the prior art usually achieves the function of blocking the DC path by cutting off the inner and outer conductors. However, this method has the following shortcomings: (1) The power capacity is small, and it cannot be applied to high-power, low-loss microwaves Transmission application; (2) The withstand voltage is low, which cannot effectively avoid the problem of arc discharge caused by the breakdown of air and other media in high-voltage applications; (3) There is no shielding structure, and there is a problem of electromagnetic leakage. SUMMARY OF THE INVENTION [0003] In order to overcome th...

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Problems solved by technology

The isolator in the prior art usually achieves the function of blocking the DC path by isolating the inner and outer conductors. However, this method has the following disadvantages: (1) The power capacity is small, and it cannot be applied to high-power, low-loss microwaves. Transmission application; (2) The withstand voltage value is low, which cannot effectively avoid the problem of arc discharge caused by breakdown of air and other media in high-voltage applications; (3) There is no shielding structure, and there is a problem of electromagnetic leakage

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