Harmonic frequency mixing and doubling circuit

Abstract

The invention discloses a harmonic frequency mixing and doubling circuit comprising two couplers, a pair of Schottky diodes, four micro-strip open-circuit lines, a via hole ground microstrip line anda micro-strip low pass filter, wherein the pair of Schottky diodes are used for achieving a harmonic frequency mixing function and a frequency doubling function, to replace a harmonic frequency mixerand a frequency doubler adopted by an existing transmitting-receiving system. The circuit is simple in structure and easy to implement, the integration level and the reliability of the system are improved, required local frequency is only a half of fundamental wave frequency mixing local frequency, and the local frequency can be reduced, so that the performance of the local oscillator signal is enhanced, the cost is effectively reduced, and thus the circuit can be applied to a microwave millimeter wave receiving-transmitting system.

Description

technical field [0001] The invention relates to the technical field of microwave and millimeter wave, in particular to a harmonic frequency mixing and multiplication circuit. Background technique [0002] As the frequency increases, the performance of the oscillation source will decrease. In order to solve this problem, the transceiver system often uses harmonic mixer technology and frequency multiplier technology. However, separating the harmonic mixer and frequency multiplier will lead to complex circuit form, increased cost, and is not conducive to system integration. [0003] A search of domestic and foreign databases was carried out on the prior art. Patent Application No. 02107141.1 "Microwave and Millimeter Wave Fourth Harmonic Mixer", published on September 24, 2003. Introduced a fourth harmonic mixer based on diode pairs, the invention patent introduces the microstrip compact resonant unit technology on the basis of the traditional harmonic mixer structure, so tha...

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Problems solved by technology

However, since this structure focuses on idler suppression to obtain good harmonic mixing performance, this structure cannot realize a device with both harmonic mixing function and RF function

[0007] The papers and patents retrieved above all explain the application of Schottky diode pairs in frequency multiplier circuits and frequency mixer circuits from different aspects, but they do not introduce or provide information that can realize frequency multiplication function and harmonic mixing. Functional device method or structure

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