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W-band even-order sub-harmonic mixer

A subharmonic and mixer technology, which is applied in the modulation transformation of diodes, impedance networks, electrical components, etc., can solve the problems of small RF bandwidth and intermediate frequency bandwidth of the mixer, and large frequency conversion loss, etc., to achieve large operating bandwidth, The effect of mixing high and medium frequency frequencies and reducing processing difficulty

Inactive Publication Date: 2012-07-25
SOUTHEAST UNIV
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Problems solved by technology

However, this kind of frequency mixing structure in the W-band is difficult to implement using hybrid integrated circuit technology, and even if it can be realized, it will cause a large frequency conversion loss; in addition, due to the limitation of the working bandwidth of the open circuit and short circuit, the use of this structure design Mixer RF bandwidth and IF bandwidth are small

Method used

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  • W-band even-order sub-harmonic mixer

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Embodiment

[0014] Embodiment: the present invention is made of radio frequency broadband band-pass filter 1, antiparallel diode pair 2, phase adjustment transmission line 3, local oscillator low-pass filter 4 and duplexer 5; wherein, described local oscillator low-pass filter 4. One end is connected to the common end of the duplexer 5, and the other end is connected to the phase adjustment transmission line 3; the antiparallel diode pair 2 is connected across the radio frequency broadband bandpass filter 1 and the phase adjustment Between transmission lines 3. The radio frequency signal is applied to the diode pair 2 through the radio frequency broadband band-pass filter 1, and the local oscillator low-pass filter 4 has a greater suppression effect on the radio frequency signal, and at the same time can pass the local oscillator and the intermediate frequency signal with a small insertion loss. By changing the phase and adjusting the length 3 of the transmission line, the grounding of th...

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Abstract

The invention discloses a W-band even-order sub-harmonic mixer, which comprises a radio-frequency broadband band-pass filter, an anti-parallel diode pair, a phase adjusting transmission line, a local oscillator low-pass filter and a duplexer, wherein one end of the local oscillator low-pass filter is connected with a common port of the duplexer while the other end of the local oscillator low-pass filter is connected with the phase adjusting transmission line, and the anti-parallel diode pair is bridged between the radio-frequency broadband band-pass filter and the phase adjusting transmission line. The W-band even-order sub-harmonic mixer realizes mutual isolation of radio-frequency signals, local oscillator signals and intermediate frequency signals by means of the radio-frequency broadband band-pass filter, the local oscillator low-pass filter and the duplexer, and the mixer can realize wide operation bandwidth as the radio-frequency broadband band-pass filter, the local oscillator low-pass filter and the duplexer have wide bandwidth.

Description

technical field [0001] The invention relates to a second-order subharmonic mixer, in particular to a W-band second-order subharmonic mixer. Background technique [0002] Subharmonic mixers have been widely used in mmWave systems. Compared with the fundamental wave mixer, the biggest advantage of the subharmonic mixer is that it can use 1 / 2 of the local oscillator frequency (relative to the fundamental wave mixer) for mixing, which greatly reduces the requirements for the local oscillator source. This advantage is especially important in the W wave frequency band. As early as the 1980s, there were reports of W-band subharmonic mixers (for example, Meier P J, Calviello J A, Bie P R. Wide-band subharmonically pumped W-band mixer in single-ridge fin-line[J] . IEEE Trans. Microw. Theory Tech., 1982, 23(12): 2184-2189, Mixers as reported). These mixers have good conversion loss performance, even comparable to the fundamental mixers in the same band. However, since these freque...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03D7/02H03H7/12
Inventor 许正彬钱澄郭健崔寅杰徐杰童烨
Owner SOUTHEAST UNIV
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