Huffman code-fed omnidirectional acoustical arrays

El‐Khamy, Said E.; Banah, A.H.

doi:10.1109/29.52699

Cited by 7 publications

(4 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In particular, many of them are too short due to the absence of a systematical generation algorithm (e.g. Barker Codes [9] and Kuttruff-Quadt Codes [4]), implying that they may be used only for small arrays, while others, being based on amplitude tapering (e.g., Huffman-Type Codes [6]- [8], Huffman Codes [8], [10], [11]), lead to low power utilization efficiency in the amplification stage and complexity added to the beamforming architecture. This poor power utilization efficiency is particularly limiting in on-board space applications, radar systems, etc.…”

Section: Radiation Patternmentioning

confidence: 99%

See 1 more Smart Citation

A novel phase-only excitation law for omnidirectional arrays

Petrolati

Angeletti

Toso

2010

2010 IEEE International Symposium on Phased Array Systems and Technology

View full text Add to dashboard Cite

A new class of excitation sequences (PAT Codes) for feeding large linear omnidirectional arrays is presented. The use of PAT Codes succeeds in overcoming the problem, typical of previously proposed excitations (e.g., Kuttruff-Quadt, Huffman-Type, Huffman Codes), of obtaining Radiation Patterns with excellent omnidirectional characteristics and avoiding, at the same time, power utilization inefficiencies due to amplitude tapering. This attractive feature derives from the innovative PAT Code generation method named Spectral Domain Synthesis (SDS) which acts directly on Code Spectrum and leads to define a simple code generation formula. Thanks to SDS, PAT Code-fed arrays succeed in controlling Radiation Pattern omnidirectionality both on average and locally, avoiding the presence of deep dips or peaks typical of other feeding sequences (e.g., Frank Codes). Due to their systematic generation algorithm, PAT Codes may be easily employed in large array applications and might also represent an optimum starting point for numerical optimization techniques aiming at further performance improvements.

show abstract

Section: Radiation Patternmentioning

confidence: 99%

“…Indeed, high frequency devices present low power generation capabilities and the use of lossy power combining networks jeopardizes the overall system efficiency [1]- [2]. One of the most important contributions to omnidirectional array development is represented by the so called Code-Fed Array Theory [3]- [8].…”

Section: Introductionmentioning

confidence: 99%

A novel phase-only excitation law for omnidirectional arrays

Petrolati

Angeletti

Toso

2010

2010 IEEE International Symposium on Phased Array Systems and Technology

View full text Add to dashboard Cite

show abstract

“…This leads to a reduction in power utilization efficiency in the amplification stage. Examples of codes belonging to this family are Huffman-Type Codes [3]- [4] and Huffman Codes [4].…”

Section: Introductionmentioning

confidence: 99%

“…Omnidirectional linear arrays excitations based on information theory codes led to the so called Code-Fed Array Theory [1]- [4]. The basic idea consists in using codes characterized by sharp Aperiodic Autocorrelation Functions (AAFs) as array feeding sequences, being excitation AAFs related to arrays' radiation patterns by a discrete Fourier Transform.…”

Section: Introductionmentioning

confidence: 99%