Sökning: "Signal integrity"

Visar resultat 1 - 5 av 54 avhandlingar innehållade orden Signal integrity.

1. 1. Design, analysis and integration of mixed-signal systems for signal and power integrity

   Författare :Li-Rong Zheng; KTH; []
   Nyckelord :signal integrity; power distribution; interconnects; deep submicron circuits; system-on-chip; system-in-package; mixed signalsystem; single level integration;

   Sammanfattning : .... LÄS MER

3. 2. Ultrasonic Arrays for Sensing and Beamforming of Lamb Waves

   Författare :Marcus Engholm; Tadeusz Stepinski; Paul D. Wilcox; Uppsala universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; imaging; array processing; guided waves; Lamb waves; dispersive waves; multi-modal waves; spatial filtering; mode suppression; resonant ultrasound; transducer design; direction of arrival estimation; adaptive beamforming; Signal processing; Signalbehandling; Electronic measurement and instrumentation; Elektronisk mät- och apparatteknik;

   Sammanfattning : Non-destructive testing (NDT) techniques are critical to ensure integrity and safety of engineered structures. Structural health monitoring (SHM) is considered as the next step in the field enabling continuous monitoring of structures. LÄS MER

4. 3. Some Aspects of Advanced Technologies and Signal Integrity Issues in High Frequency PCBs, with Emphasis on Planar Transmission Lines and RF/Microwave Filters

   Författare :Felix D. Mbairi; Sture Petersson; Shaofang Gong; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Signal integrity; crosstalk; guard trace; PCB; transmission line loss; high frequency measurement; dielectric; SU-8; electromagnetic bandgap; microwave filter; Electrical engineering; electronics and photonics; Elektroteknik; elektronik och fotonik;

   Sammanfattning : The main focus of this thesis is placed on high frequency PCB signal Integrity Is-sues and RF/Microwave filters using EBG structures. From the signal Integrity aspect, two topics were mainly discussed. LÄS MER

5. 4. Subband Beamforming for Speech Enhancement in Hands-Free Communication

   Författare :Zohra Yermeche; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Beamforming; Speech enhancement; Subband filtering;

   Sammanfattning : Speech enhancement by means of microphone array signal processing has a major role in voice communication applications such as audio-conferencing, hands-free telephony, voice recognition and hearing aids. In these communication scenarios, the speaker is positioned at a remote distance from the microphones, which causes problems of environment noise and interfering sound corrupting the received speech. LÄS MER

7. 5. Soft-Constrained Subband Beamforming for Speech Enhancement

   Författare :Zohra Yermeche; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Sammanfattning : New speech acquisition applications are emerging as a result of advances in technology and the prevalence of mobile communication. While today voice control of consumer equipment is becoming a reality, communication technology has extended voice connectivity to personal computers and mobile communication devices with the aim of enabling natural communication in a variety of environments such as cars, restaurants and offices. LÄS MER