KR-20260067887-A - DELAY-BASED SPECTRUM-SHAPING ULTRA WIDEBAND TRANSMITTER AND ITS DRIVING METHOD

KR20260067887AKR 20260067887 AKR20260067887 AKR 20260067887AKR-20260067887-A

Abstract

An ultra-wideband transmitter capable of forming a delay-based spectrum and a driving method thereof are provided according to an example of the present disclosure. In particular, the ultra-wideband transmitter may include: a clock generator that generates and outputs at least one clock signal having a fixed period; a pulse generator that receives the clock signal generated from the clock generator and generates a first pulse signal and at least one second pulse signal having a preset frequency band; a pulse shaping unit that shapes the first pulse signal and the at least one second pulse signal to correspond to a transmission method; a multiplexer that selects one of the at least one clock signal based on phase data and outputs a carrier wave; a power amplifier that amplifies each pulse signal shaped by the pulse shaping unit or a combined pulse signal resulting from the combination of each shaped pulse signal; and a combining unit disposed before or after the power amplifier that combines and outputs each pulse signal shaped by the pulse shaping unit or each pulse signal amplified by the power amplifier.

Inventors

송민영
김찬영
손지훈

Assignees

재단법인대구경북과학기술원

Dates

Publication Date: 20260513
Application Date: 20241106

Claims (20)

A clock generation unit that generates and outputs at least one clock signal having a fixed period; A pulse generation unit that receives a clock signal generated from the above clock generation unit and generates a first pulse signal having a preset frequency band and at least one second pulse signal; A pulse forming unit that forms the first pulse signal and the at least one second pulse signal to correspond to a transmission method; A multiplexer that selects one of the at least one clock signal based on phase data and outputs a carrier wave; A power amplifier that amplifies each pulse signal formed by the pulse forming unit or a combined pulse signal according to the combination of each formed pulse signal; and A combining unit positioned before or after the power amplifier, which combines and outputs each pulse signal formed by the pulse shaping unit or each pulse signal amplified by the power amplifier. Ultra-wideband transmitter.
In paragraph 1, The above at least one second pulse signal is, A pulse signal having the same shape as the first pulse signal and time-shifting the first pulse signal by a preset delay time, Ultra-wideband transmitter.
In paragraph 1, The above delay time is, A constant multiple of the clock period, or a synchronous or asynchronous delay Ultra-wideband transmitter.
In paragraph 1, The above pulse generating unit is, A shift register comprising D flip-flops as a delay circuit, Ultra-wideband transmitter.
In paragraph 1, The above pulse forming unit is, Shaping the first pulse signal and the at least one second pulse signal to satisfy a pre-stored spectrum mask, Ultra-wideband transmitter.
In paragraph 1, The above power amplifier is, Composed of at least one or more, amplifying each formed pulse signal or the combined pulse signal according to a preset amplification rate based on single-bit size data, Ultra-wideband transmitter.
In paragraph 1, When the above coupling part is positioned before the power amplifier part, Each formed pulse signal output from the pulse forming unit is combined in the digital domain, wherein the combined pulse signal output from the combining unit is up-converted by the carrier wave through the power amplifier and output. Ultra-wideband transmitter.
In paragraph 1, When the above coupling part is positioned after the power amplifier part, Each amplified pulse signal output from the power amplifier is combined in the RF domain, wherein each shaped pulse signal output from the pulse shaping unit is input to each power amplifier and multiplied by the carrier wave to be output, and each waveform is combined by the combining unit and output. Ultra-wideband transmitter.
In a driving method for an ultra-wideband transmitter, A step in which a clock generation unit generates and outputs at least one clock signal having a constant period; A pulse generation unit receives a clock signal generated from the clock generation unit and generates a first pulse signal having a preset frequency band and at least one second pulse signal; A step in which a pulse shaping unit shapes the first pulse signal and the at least one second pulse signal to correspond to a transmission method; A step in which a combining part combines and outputs each formed pulse signal output from the pulse forming part; and A power amplifier including the step of amplifying and outputting a pulse signal coupled by the coupling unit, Driving method of an ultra-wideband transmitter.
In Paragraph 9, The above at least one second pulse signal is, A pulse signal having the same shape as the first pulse signal and time-shifting the first pulse signal by a preset delay time, Driving method of an ultra-wideband transmitter.
In Paragraph 9, The above delay time is, A constant multiple of the clock period, or a synchronous or asynchronous delay Driving method of an ultra-wideband transmitter.
In Paragraph 9, The step of shaping the first pulse signal and the at least one second pulse signal to correspond to a transmission method is The first pulse signal and the at least one second pulse signal are shaped to satisfy a pre-stored spectrum mask. Driving method of an ultra-wideband transmitter.
In Paragraph 9, The step of amplifying the pulse signal combined by the above-mentioned coupling part is, Amplifying the combined pulse signal according to a preset amplification rate based on single-bit size data, Driving method of an ultra-wideband transmitter.
In Paragraph 9, The step of amplifying the combined pulse signal described above is, The above power amplifier outputs the combined pulse signal by up-converting it with the carrier wave. Driving method of an ultra-wideband transmitter.
In a driving method for an ultra-wideband transmitter, A step in which a clock generation unit generates and outputs at least one clock signal having a constant period; A pulse generation unit receives a clock signal generated from the clock generation unit and generates a first pulse signal having a preset frequency band and at least one second pulse signal; A step in which a pulse shaping unit shapes the first pulse signal and the at least one second pulse signal to correspond to a transmission method; A step in which a power amplifier amplifies each pulse signal formed by the pulse forming unit; and A combining unit comprising the step of combining and outputting each amplified pulse signal output from the power amplifier, Driving method of an ultra-wideband transmitter.
In paragraph 15, The above at least one second pulse signal is, A pulse signal having the same shape as the first pulse signal and time-shifting the first pulse signal by a preset delay time, Driving method of an ultra-wideband transmitter.
In paragraph 15, The above delay time is, A constant multiple of the clock period, or a synchronous or asynchronous delay Driving method of an ultra-wideband transmitter.
In paragraph 15, The step of shaping the first pulse signal and the at least one second pulse signal to correspond to a transmission method is The first pulse signal and the at least one second pulse signal are shaped to satisfy a pre-stored spectrum mask. Driving method of an ultra-wideband transmitter.
In paragraph 15, The step of amplifying the pulse signal combined by the above-mentioned coupling part is, Amplifying each of the amplified pulse signals according to a preset amplification rate based on single-bit size data, Driving method of an ultra-wideband transmitter.
In paragraph 15, The step of combining each of the amplified pulse signals above is, When each formed pulse signal output from the pulse forming unit is input to each power amplifier and multiplied by the carrier wave to produce an output, each waveform is combined by the coupling unit and output. Driving method of an ultra-wideband transmitter.

Description

Delay-Based Spectrum-Shaping Ultra Wideband Transmitter and Its Driving Method The present disclosure relates to a delay-based spectrum-forming ultra-wideband transmitter and a driving method thereof. Ultra-wideband (UWB) is a wireless communication technology that enables the transmission of large amounts of information with low power by using a wide spectrum of frequencies over short distances compared to the conventional spectrum, and is also known as wireless digital pulse. Generally, it is defined as a short-range wireless communication technology that realizes ultra-high-speed communication at speeds of 100 Mbps or higher in the frequency band of 3.1 to 10.6 GHz with low power consumption across a very wide band compared to the existing spectrum. The most significant feature of UWB is that it utilizes an ultra-wideband while maintaining relatively low output power. Furthermore, ultra-wideband systems are constructed based on a relatively lower spectral power density compared to existing narrowband systems or broadband CDMA systems. It is highly useful because it is significantly superior to existing wireless communication technologies in terms of speed and power consumption. In particular, it is emerging as a groundbreaking technology suitable for Personal Area Networks (PANs) that connect personal computers, peripherals, and/or home appliances located within a certain distance from offices and homes using a high-speed wireless interface. The background art is provided to facilitate understanding of the present disclosure. It should not be understood as an acknowledgment that the matters described in the background art exist as prior art. Figure 1 is a diagram schematically showing the configuration of an ultra-wideband transmitter according to a comparative example. Figure 2 is a diagram illustrating the characteristics of a spectrum generated by an ultra-wideband transmitter according to a comparative example. FIG. 3 is a diagram illustrating the operation of combining a first pulse signal and a second pulse signal in an ultra-wideband transmitter according to a first embodiment of the present disclosure. FIG. 4 is a diagram illustrating the operation of combining a first pulse signal and a second pulse signal in an ultra-wideband transmitter according to a second embodiment of the present disclosure. FIG. 5 is a block diagram schematically showing the configuration of an ultra-wideband transmitter according to a first embodiment of the present disclosure. FIG. 6 is a block diagram schematically showing the configuration of an ultra-wideband transmitter according to a second embodiment of the present disclosure. FIG. 7 is a diagram illustrating a driving method of an ultra-wideband transmitter according to a first embodiment of the present disclosure. FIG. 8 is a diagram illustrating a driving method of an ultra-wideband transmitter according to a second embodiment of the present disclosure. FIG. 9 is a diagram showing an example of a spectrum generated as a first pulse signal and a second pulse signal are combined by an ultra-wideband transmitter according to the present disclosure. Figure 10 is a diagram showing spectrum regulations for each country. The advantages and features of the present disclosure and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, the present disclosure is not limited to the embodiments disclosed below but may be implemented in various different forms. These embodiments are provided merely to ensure that the disclosure is complete and to fully inform those skilled in the art of the scope of the invention, and the present disclosure is defined only by the scope of the claims. In connection with the description of the drawings, similar reference numerals may be used for similar components. In this document, expressions such as "have," "can have," "include," or "can include" refer to the existence of the relevant feature (e.g., numerical values, functions, actions, or components, etc.) and do not exclude the existence of additional features. In this document, expressions such as “A or B,” “at least one of A or/and B,” or “one or more of A or/and B” may include all possible combinations of items listed together. For example, “A or B,” “at least one of A and B,” or “at least one of A or B” may refer to cases including (1) at least one A, (2) at least one B, or (3) both at least one A and at least one B. Expressions such as "first," "second," "first," or "second" used in this document may modify various components regardless of order and/or importance, and are used merely to distinguish one component from another without limiting such components. For example, the first user device and the second user device may represent different user devices regardless of order or importance. For example, without departing from the scope of rights set forth in this document, the first co