Microwave frequency range combiner

Abstract

The invention discloses a microwave frequency range combiner which comprises a rectangular cavity and a coupling plate which divides the rectangular cavity into two waveguide cavities. A longitudinal direction of the coupling plate is defined as a global longitudinal direction, and a width direction of the coupling plate is defined as a global width direction. At a middle of the global longitudinal direction, the coupling plate is provided with an orifice to form two parts with a distance. Rectangular cavity inner walls at two sides of a global width direction of the orifice are provided with a plurality of metal cylinders which are perpendicular to the inner walls and are pressed against each other. A coupling gap is formed between the metal cylinders and the coupling plate and / or between two adjacent metal cylinders. The two waveguide cavities are provided with impedance matching devices. According to the microwave frequency range combiner, the metal cylinders and the orifice on the coupling plate form the coupling gap which is combined with echelonment matching devices in the waveguide cavities, so that adjustment is flexible and convenient, whatever a frequency bandwidth, coupling energy size or a balance degree in a frequency band has an absolute advantage, and performance is substantially improved.

Description

【Technical field】 [0001] The invention relates to a microwave passive device, in particular to a microwave frequency combiner. 【Background technique】 [0002] Microwave communication is one of the commonly used wireless communication means in the world, and is widely used in data transmission, radio and television transmission, satellite communication, mobile communication and other fields. The combiner is an outdoor three-port network device for wireless transmission products, which connects the antenna and two outdoor units (ODUs), that is, two transceiver channels share one antenna through the combiner. [0003] The combiner connects the antenna and the two ODU units. Its existence will inevitably increase the insertion loss of the antenna and increase the standing wave ratio, thereby deteriorating the overall performance of the antenna. Therefore, the design of the combiner is to make the electrical performance deterioration of the combiner under working conditions not ...

AI Technical Summary

Problems solved by technology

Such a combiner has a narrow frequency band, and the insertion loss curve is unbalanced in the frequency band, especially the standing wave ratio of the three ports deteriorates greatly

[0005] An improved scheme such as figure 2 As shown, the two waveguide cavities of the combiner and the partition 4' and the hole 5' in the middle of the partition 4' are integrally processed, and a gap hole 61' is placed at the middle long hole 5' of the partition 4' The metal block 6', the gap hole 61' provided on the metal block 6' and the long hole 5' in the middle of the partition plate 4' jointly constitute the coupling slot assembly 7' of the combiner. For such a combiner, It is difficult for the metal block 6' with the gap hole 61' to fully contact the left and right walls of the two waveguide cavities 8' of the combiner at the same time. The contact is not complete, and there will be gaps, resulting in the insertion loss of the combiner Deterioration, especially in the high-frequency band, correspondingly increases the requirements for machining accuracy, and its manufacturing cost is also high, which is not conducive to large-scale mass production

Images