Pulse ultra-wideband transmitter with adjustable amplitude and spectrum

An ultra-wideband receiver, pulsed technology, applied in electrical components, transmission systems, etc., can solve the problems of large influence of process deviation, and achieve the effects of reducing power consumption, adjustable frequency spectrum and amplitude, and simple structure

Inactive Publication Date: 2010-12-22
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the problem that the current IR-UWB transmitter is greatly affected by the restrictions of different UWB standards

Method used

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  • Pulse ultra-wideband transmitter with adjustable amplitude and spectrum
  • Pulse ultra-wideband transmitter with adjustable amplitude and spectrum
  • Pulse ultra-wideband transmitter with adjustable amplitude and spectrum

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Embodiment Construction

[0022] The technical solution of the present invention will be further described below through the embodiments and in conjunction with the accompanying drawings. figure 1 Shown is the basic components of the entire transmitter system, which includes: BPSK modulated pulse generator, amplitude-adjustable pulse combiner, RLC frequency selector, output buffer controller and output buffer. The transmitter adopting the system architecture of the present invention has the functions of adjustable amplitude and frequency spectrum.

[0023] The following is attached figure 2 and image 3 , introduce in detail the embodiment of the transmitter CMOS circuit using the system architecture of the present invention, the entire transmitter CMOS circuit is based on the SMIC 0.13μm CMOS process:

[0024] 1) Pulse generator for BPSK modulation

[0025] Its circuit is as figure 2 As shown in the middle left block diagram "BPSK modulated pulse generator", it is divided into upper and lower br...

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Abstract

The invention belongs to the ultra-wideband communication technical field, and in particular relates to a pulse ultra-wideband transmitter with adjustable amplitude and spectrum. The transmitter is composed of four-stage modules which are sequentially connected together, wherein, the former two-stage modules generate pulse signals modulated by BPSK, an intermediate RLC frequency-selective network realizes adjustment of amplitude, length and spectrum of pulse, and finally the pulse is output by an ultra-wideband output buffer. The transmitter is modulated by adopting the BPSK, and an RLC network is taken as a core module of the whole system to realize adjustment of pulse parameters and compensation of process variation. By virtue of the characteristics of low duty cycle of an IR-UWB transmission signal, the output buffer is switched off in the case of no pulse to lower power consumption. The transmitter has the advantage of adjustable pulse parameters, thus meeting the requirements of UWB standards in different countries for spectrum and transmission power.

Description

technical field [0001] The invention belongs to the technical field of ultra-wideband communication, and in particular relates to a pulse type ultra-wideband transmitter. Background technique [0002] Nowadays, the types of electronic consumer products are increasing day by day, and the short-distance high-speed wireless communication between electronic consumer products has attracted more and more attention. Pulse ultra-wideband (IR-UWB) is a high-speed wireless communication technology suitable for short distances. It is derived from military radar technology and directly uses sub-nanosecond narrow pulses to transmit data. The pulse spectrum is very wide, up to 500MHz or more . It has many unique advantages, such as low interception rate, anti-multipath, strong penetration, simple logic structure, etc.; theoretically it can reach a transmission rate of 500MHz, and it can be used without a license application. With the rapid development of microelectronic devices, UWB tec...

Claims

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Application Information

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IPC IPC(8): H04B1/69H04B1/02
Inventor 蒋俊洪志良
Owner FUDAN UNIV
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