A Harmonic Mixing Frequency Multiplication Circuit
A frequency doubling circuit and frequency mixing technology, which is applied in the microwave and millimeter wave fields, can solve the device method that cannot realize the device with both harmonic mixing function and radio frequency function, and does not introduce the frequency doubling function and harmonic mixing function. Or structure and other problems, to achieve the effect of simple structure, improved integration and reliability, and reduced cost
Active Publication Date: 2021-11-02
SHANGHAI RADIO EQUIP RES INST
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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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[0043] based on the following Figure 1 ~ Figure 3 , specifically explain the preferred embodiment of the present invention.
[0044] like figure 1 As shown, the present invention provides a harmonic mixing frequency multiplication circuit, which is realized based on a pair of Schottky diodes. The harmonic mixing frequency multiplication circuit specifically includes:
[0045] Microstrip "cross junction" line 12, which has four termination points: a-end, b-end, c-end and d-end, wherein a-end and c-end are on the same straight line, b-end and d-end are on the same straight line;
[0046] Schottky diode pair 10, which includes a first Schottky diode and a second Schottky diode, the cathode of the first Schottky diode is connected to the b end of the microstrip "cross junction" line 12, and the second Schottky diode The positive pole of the microstrip is connected to the d end of the "cross junction" line 12;
[0047] The local oscillator input component is connected to the a ...
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A harmonic mixing frequency multiplication circuit, including two couplers, a pair of Schottky diodes, four sections of microstrip open lines, a section of via-hole grounded microstrip lines and a microstrip low-pass filter, using a pair of Xiao The tertiary diode has the function of harmonic mixing and frequency multiplication, which replaces the harmonic mixer and frequency multiplier used in the existing transceiver system. It has a simple structure and is easy to implement, which improves the integration and reliability of the system. The required local oscillator frequency is only half of the fundamental frequency mixing local oscillator frequency, which can greatly reduce the local oscillator frequency, thereby improving the performance of the local oscillator signal and effectively reducing the cost. Therefore, the present invention can be applied to microwave and millimeter wave transceiver systems.
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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IPC IPC(8): H03D7/16H03B19/00
CPCH03B19/00H03D7/16
Inventor 王俐聪刘永杰徐晟杨晓明丁勇苏坪周宏雷
Owner SHANGHAI RADIO EQUIP RES INST