5G communication frequency source based on phase-adjustable open-loop resonator structure

Abstract

The invention relates to a 5G communication frequency source based on a phase-adjustable open-loop resonator structure, and belongs to the field of microwave circuit design. The frequency source comprises a resonator module, two paths of same oscillator modules and a power divider module, a resonator module is connected in series between the two oscillator modules, the two oscillator modules sharethe same resonator module, and the output ends of the two oscillator modules are combined through the power divider module to form a total output. The resonator module is of a phase-adjustable open-loop resonator structure, the capacitance of a capacitor loaded into a resonator is changed by adjusting the direct-current bias voltage of the resonator module, the phase of the circuit is adjusted, and the working frequency band of the frequency source circuit is changed accordingly. A bending structure is added in the resonator module, so that the circuit size can be effectively reduced; and a slotting structure is added in the resonator module, so that parasitism in a circuit can be eliminated. According to the invention, the circuit size can be effectively reduced, processing is simple, the flexibility and adjustability are realized, the structure is simple, and the integration is easy.

Description

technical field [0001] The invention belongs to the field of microwave circuit design, and relates to a millimeter-wave frequency source for 5G communication based on a phase-adjustable open-loop resonator structure. Background technique [0002] In systems that transmit time or frequency signals, a highly stable frequency source is critical for proper system operation. Frequency stability can be divided into long-term stability and short-term stability. Long-term stability is related to factors such as ambient temperature and component aging; short-term stability depends on the phase noise coefficient of the system. In order to obtain higher stability, it is necessary to improve the anti-interference ability of the circuit and the parameter level of the system phase noise. [0003] Due to the limited maximum operating frequency of active devices, the operating frequency of common FETs can only reach about 20GHz. When the required oscillation frequency exceeds this range, t...

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Problems solved by technology

[0004] At present, in domestic and foreign research in this direction, dielectric resonators are usually used as frequency-selective filter structures, but the dielectric blocks in them need to be purchased or customized according to application requirements, and it is difficult to debug the overall circuit when designing the circuit. It cannot be molded at one time; at the same time, the dielectric block is a three-dimensional structure, which increases the size of the circuit to a certain extent and limits the application of dielectric resonators in highly integrated circuits.

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