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Ultra-wideband radar pulse transmitter and method

An ultra-wideband radar and transmitter technology, applied in the field of ultra-wideband radar pulse transmitters and Gaussian pulse signals, can solve the problems of complex circuit structure and difficult adjustment, and achieve the effect of compact structure and convenient miniaturization design

Active Publication Date: 2011-07-13
INST OF ELECTRONICS CHINESE ACAD OF SCI
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an ultra-wideband radar pulse transmitter and method, which can generate different pulse signals required for various radar systems, so as to overcome the defects that the existing pulse generation circuit structure is complex and not easy to adjust

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Embodiment Construction

[0035] Ultra-wideband radar pulse transmitter of the present invention, its pulse generation method comprises the following steps:

[0036] Step 1. The trigger pulse of the circuit is a square wave signal, which controls the opening and closing of the microwave triode circuit.

[0037] Step 2: The microwave triode has a fast switching function, and can shape the base-level input signal into a signal with faster edges and opposite phases.

[0038] Step 3: The microwave triode is combined with the charging and discharging capacitor to form a nanosecond-level pulse signal at one end of the capacitor.

[0039] Step 4, the nanosecond level signal generates a picosecond level narrow pulse signal when the step recovery diode changes from the on state to the off state.

[0040] Step 5, the Schottky diode shapes the bottom of the pulse, and outputs a Gaussian pulse.

[0041] In order to realize the impulse transmitter meeting the different needs of the radar system, the present inven...

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Abstract

The invention discloses an ultra-wideband radar pulse transmitter and method, relating to a pulse signal generating technology. The pulse transmitter comprises a microwave audion, an SRD (Step Recovery Diode) and a Scotty diode. A signal with a rapider edge is formed by utilizing switching characteristic of the microwave audion through the charging and discharging process of a capacitor so that the SRD is changed from a switch-on state to a switch-off state, and an ultra-wideband Gaussian narrow pulse is generated. By changing the power supply voltage and the charging and discharging capacitance, the width and the amplitude of the Gaussian pulse can be adjusted. The pulse transmitter provided by the invention comprises a subnanosecond pulse circuit, a nanosecond pulse circuit, a single-period pulse circuit or a bipolar pair pulse circuit, and the generated pulse signal has good waveform quality and can meet the application needs of different pulse radar transmitter systems.

Description

technical field [0001] The invention relates to the technical field of pulse signal generation, and relates to an ultra-wideband radar pulse transmitter and method, which provide Gaussian pulse signals with different application requirements for pulse-type ultra-wideband radar. Background technique [0002] Ultra-wideband technology is a wireless technology for data communication through sub-nanosecond extremely narrow pulse signals. Due to its advantages of high speed, low power consumption and low cost, it is used in precise positioning, ground penetrating radar, non-destructive testing, wireless Communication, hostage rescue, urban anti-terrorism and many other fields have important application prospects. [0003] Among the key technologies of ultra-wideband communication, narrow pulse signal generation technology has always been a technical issue that has attracted much attention in the field of radio frequency circuit research. There are many ways to generate pulses: s...

Claims

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Application Information

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IPC IPC(8): G01S7/282
Inventor 刘丽华陈洁吴秉横黄琼孟升卫方广有
Owner INST OF ELECTRONICS CHINESE ACAD OF SCI
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