Miniature airborne up-converter and manufacturing process thereof

Abstract

The invention discloses a miniature airborne up-converter which is composed of three parts of a local oscillator circuit, a frequency conversion channel circuit and a power control circuit. An output end of the local oscillator circuit and the power control circuit are connected with the frequency conversion channel circuit respectively. Manufacturing processes include steps of circuit design, circuit wiring, circuit electric fitting, final assembly and multi-channel quality test. Stray rejection ratio of local oscillator signals is improved greatly, and power dissipation of the whole machine is reduced, meanwhile, broadband phase discrimination is used, phase discrimination frequency is improved, rapid capture broadband is added, frequency agility time is increased, and problems of miscellaneous inhibition capacity, frequency agility time and the like of local oscillator signals are solved; a mixer with high compression is used as frequency spectrum flitting, secondary frequency conversion is used, needed broadband signals are produced through the secondary frequency conversion and output by amplification of filtering waves, stray is effectively restrained, and anti-interference capability is enhanced; and multi-channel quality test is used in the manufacturing process, checks are performed at all levels, and product yield and product quality are greatly improved.

Description

technical field [0001] The invention relates to a small airborne up-converter and its manufacturing process. Background technique [0002] There are many ways to achieve frequency hopping oscillation, which can be divided into direct synthesis (crystal oscillator frequency multiplication chain) and indirect synthesis (phase-locked loop) according to the way of realization. When direct synthesis is used, the system is complex in structure, high in cost, low in clutter suppression, difficult to achieve dense jump points, large in working current, and large in size; in indirect synthesis, although the system is simple in structure, high in reliability, low in cost, High wave suppression, easy to achieve dense jump points, small operating current, and small size, but it must be combined with direct synthesis when forming broadband frequency hopping, and the slow frequency hopping speed and poor phase noise are inevitable shortcomings . At present, the frequency hopping speed o...

AI Technical Summary

Problems solved by technology

It has the advantages of relatively simple system composition, low cost, and small volume. Because it uses indirect synthesis, its clutter suppression is good and the complexity is not high.

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