Radio frequency signal source for processing abrupt changing signals and radio frequency signal source capable of reducing signal leakage
A radio frequency signal source and signal technology, applied in the field of radio frequency signal source, to achieve the effect of reducing signal leakage, reducing interference and avoiding adverse effects
Inactive Publication Date: 2015-12-30
SUZHOU RIGOL PRECISION ELECTRIC TECH
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Problems solved by technology
[0006] In order to solve the problem of mutation signals in the signal generated by the radio frequency signal source in the prior art, the present invention proposes a radio frequency signal source capable of processing mutation signals and a radio frequency signal source capable of processing high frequency mutation signals
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Embodiment Construction
[0042] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0043] refer to figure 1 , is a schematic structural diagram of the radio frequency signal source 1 for processing abrupt signals in Embodiment 1 of the present invention. The radio frequency signal source 1 includes a digital frequency synthesis unit 101 , a first switch 102 , a high frequency unit 103 , a low frequency unit 104 , a second switch 105 , an attenuation unit 106 and a control unit 107 .
[0044] The digital frequency synthesis unit 101 is configured to perform digital frequency synthesis processing according to the clock signal to generate a frequency signal s1.
[0045]As an example, the digital frequency synthesis unit 101 includes a DDS unit, a digital-to-analog conversion unit, a filter unit, etc., the DDS unit is used to generate a variable-frequency digital frequency signal according to a clock signal, and the digita...
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The invention discloses a radio frequency signal source for processing abrupt changing signals and a radio frequency signal source capable of reducing signal leakage. The radio frequency signal source includes a digital frequency synthesis unit, a first switch, a high frequency unit, a low frequency unit, a second switch, an attenuation unit and a control unit. The control unit is used for controlling the first switch to connect the output end of the digital frequency synthesis unit with the input end of the high frequency unit or the input end of the low frequency unit, and controlling the second switch to connect the output end of the high frequency unit or the output end of the low frequency unit with the input end of the attenuation unit according to user settings. The control unit is also used for executing the following steps according to the low frequency-to-high frequency switching settings or amplitude switching settings of a user: 1) the control unit controls the attenuation unit to be switched to a maximum attenuation tap position; and 2) the control unit controls the attenuation unit to be switched to a corresponding attenuation tap position according to the setting information of the switching settings. Compared with the prior art, the radio frequency signal source of the invention can reduce signal abrupt change and signal leakage.
Description
technical field [0001] The invention relates to the field of frequency spectrum measurement, in particular to a radio frequency signal source for processing abrupt signals and a radio frequency signal source capable of reducing signal leakage. Background technique [0002] The radio frequency signal source is a radio frequency signal generating device, which can output a signal with stable frequency and amplitude, which can be used to calibrate the spectrum analyzer, simulate and generate various signals required by the user, etc. [0003] When applying a radio frequency signal source, it is usually expected to generate a signal with a stable amplitude, but in the actual operation process, due to frequency or amplitude switching, the amplitude of the generated signal may appear abrupt changes such as spikes. For example, when the amplitude is switched, due to the switching between high frequency and low frequency, or the switching time between different modules in the high f...
Claims
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IPC IPC(8): H03K3/02
Inventor 梁斌王悦王铁军李维森
Owner SUZHOU RIGOL PRECISION ELECTRIC TECH