Bipolar Gaussian single-cycle pulse generation circuit and method based on cmos

Abstract

The invention discloses a bipolar gauss single recurrent pulse generating circuit and method based on a CMOS. The bipolar gauss single recurrent pulse generating circuit based on the CMOS includes a narrow pulse generating unit, a clock signal polarity reversing unit, a direct-current level eliminating unit, a synchronization unit, a synthesis unit and a filter shaping unit. In the invention, influences of waveform converting and processing on base band data accuracy are avoided effectively; a bipolar gauss single recurrent pulse generator adopted by the invention can be realized by the integrated circuit CMOS technology, is suitable for integrating in an SOC chip and is high in promotion value; not only are the complexity and implementation difficulty of the bipolar gauss single recurrent pulse generating circuit lowered, but also the power consumption is lowered and the area of the chip is decreased, and the strict requirements for volume, power consumption, long term sustainable work and the like of embedded equipment with lower complex rate and higher reliability are met and the bipolar gauss single recurrent pulse generating circuit and method based on the CMOS can be widely used in the field of bio-medical treatment.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a CMOS-based bipolar Gaussian single-cycle pulse generation circuit and method. Background technique [0002] As the U.S. Federal Communications Commission (FCC) opened the civil license in the 3.1GHz-10.6GHz frequency band, Ultra Wideband (UWB) technology, with its own short-distance high-speed transmission, large data volume, high security, high precision and low Power consumption and other advantages provide a new technical means for the transformation of indoor short-distance communication from traditional wired connection to wireless connection, making the use of various electronic devices more flexible. Therefore, research on short-distance ultra-wideband wireless communication systems and their key technical methods is gradually emerging, among which is the pulse ultra-wideband (IR-UWB) technology with higher data rate and higher energy efficiency in the wide freque...

AI Technical Summary

Problems solved by technology

In the filtering method, the output signal generated by the high-frequency waveform generator is coupled to the pulse shaping filter for filtering processing, and the pulse signal that meets the spectrum constraint requirements is output. The advantage of this method is that the circuit structure is simple, and only capacitors, inductors and a small amount of MOS are required. Transistors can be implemented, and the main parasitic capacitance in the pulse generator can be used as a part of the filter capacitor to form a filter together with the inductor, but the disadvantage of this method is that the filter consumes a lot of power, and the spiral inductor used in the filter is susceptible to process deviation. The impact of the influence of the high-frequency filter cannot meet the stringent performance requirements. In addition, the chip area occupied by the spiral inductor is relatively large, which increases the cost of chip design and implementation.

In the spectrum mixing method, the local oscillator signal and the envelope signal generated by the high-frequency local oscillator are mixed by a mixer to obtain a pulse waveform that meets the requirements. This method can realize binary phase shift keying (BPSK) IR-UWB signal The generation and emission of this method, but the circuit scale of this method is large, the structure is complex, and the realization is difficult. Compared with the other two methods, its circuit power consumption and circuit area are relatively largest

In the multi-channel pulse synthesis method, the delay line is used to delay the propagation of multiple pulses, and then perform multi-channel pulse synthesis to generate multi-cycle pulses that meet the requirements. This method has high energy efficiency and simple circuit structure. The precise control of the alignment is extremely demanding, especially in the UWB frequency band, the pulse signal changes rapidly, which greatly increases the difficulty of designing the precise pulse alignment control circuit and timing circuit

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