Double-probe waveguide

Abstract

The invention discloses a double-probe waveguide. The double-probe waveguide comprises a hollow rectangular waveguide; the middle of the upper surface of the rectangular waveguide protrudes to form an upper cavity; the middle of the lower surface of the rectangular waveguide is concaved on the bilateral sides of the rectangular waveguide to form two symmetrical lower cavities respectively; the upper cavity and the lower cavities are communicated together to form a waveguide cavity; the edge portions of the upper surfaces of the two lower cavities protrude to form symmetrical projections respectively; the height of the projections is smaller than that of the upper cavity; a groove is formed between each projection and the upper cavity; the upper cavity comprises an input end; the two symmetrical lower cavities comprise an output end respectively; each output end is provided with a quartz probe. The double-probe waveguide is matched with an input port of a T/R module, meanwhile the waveguide microstrip transition and power allocation functions can be achieved, and accordingly the insertion loss is small in comparison with independent use of power division and probe transition, the size can be furthest saved, and the power division ratio and the standing wave performance are good.

Description

technical field [0001] The invention relates to the field of active phased array radar antenna T / R modules, in particular to a double-probe waveguide. Background technique [0002] Since the advent of radar in the 1930s, radar technology has achieved rapid development in the Second World War. After the 1990s, active phased array radar has become the mainstream of radar development. Each active phased array radar contains a number of T / R components, which not only complete the receiving task but also complete the transmitting task, and also perform phase scanning on the antenna. Each T / R component is equivalent to a high-frequency head of an ordinary radar, which includes not only a transmitting power amplifier, but also functional circuits such as a low-noise amplifier, a phase shifter, and a beam control circuit. As one of the core components of active phased array radar, T / R components, with the increasing requirements of modern technology for active phased array radar, h...

AI Technical Summary

Problems solved by technology

Because the front end of LTCC module 31 feeds adopts microstrip transmission line, and the rear feeder network needs to adopt double-probe waveguide design, so the functions of waveguide microstrip transition and power distribution need to be completed at T/R module input

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