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An experimental digital beamforming array
1988 IEEE AP-S. International Symposium, Antennas and Propagation, 2003A digital beamforming (DBF) array was fabricated and tested using commercially available parts to demonstrate beam agility and reconfigurability. The antenna portion of the DBF system consists of a 2*4 array of microstrip patch elements. The patch radiators are corner-fed square elements with a diagonal slot for circular polarization designed at 2.95 ...
D.C.D. Chang, W.N. Klimczak, G.C. Busche
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Postfiltering in Digital Beamformers
IEEE Transactions on Aerospace and Electronic Systems, 1976Assuming a sinusoidal signal superimposed on a narrow-band Gaussian noise as the input to a receiving array, the output power and signal-to-noise ratio of a digital beamformer with postfiltering were formulated so that subsequent calculations could be made without an analysis in the frequency domain.
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Resolution enhancement of digital beamformers
IEEE Transactions on Acoustics, Speech, and Signal Processing, 1984Large array extent is usually required in order to adequately enhance the resolution of a beamformer and to improve its beam pattern. Due to physical constraints this requirement may not be met. This paper presents the results of an analytical and experimental study in the use of a signal extrapolation method to enhance the beamformer resolution for ...
null Hong Fan, E. El-Masry, W. Jenkins
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2012
DBF architectures provide significant functionality enhancements for phased array radar. At the current state of digital technology, element-level DBF is often impractical for large arrays operating at high frequencies, so subarray level implementations are commonly used to reduce the digital receiver count.
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DBF architectures provide significant functionality enhancements for phased array radar. At the current state of digital technology, element-level DBF is often impractical for large arrays operating at high frequencies, so subarray level implementations are commonly used to reduce the digital receiver count.
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Digital beamforming for smart antennas
2001 IEEE MTT-S International Microwave Sympsoium Digest (Cat. No.01CH37157), 2002An 8-channel digital phased array antenna (PAA) is designed and evaluated for a smart antenna application in the cellular PCS band (1850 MHz to 1990 MHz). Each channel is digitized at the RF carrier frequency using bandpass sampling clocking up to 1.5 Gsps with a 140 MHz bandwidth.
T.W. Nuteson, G.S. Mitchell
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Digital beamforming demonstration radar
International Symposium on Antennas and Propagation Society, Merging Technologies for the 90's, 1990The development of a demonstration radar has been undertaken to demonstrate the capabilities and application of digital beamforming techniques and technologies for future monostatic surveillance radars. These techniques and technologies are also applicable to bistatic radars.
J.H. Hunter, T.W. Miller
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IEEE Transactions on Aerospace and Electronic Systems, 2023
Xinzhu Chen +5 more
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Xinzhu Chen +5 more
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Properties of Digital Beamforming with Subarrays
2006 CIE International Conference on Radar, 2006Digital beamforming with array antennas is often applied at subarray outputs. These subarrays can be considered as new array elements; their phase centres are separated by more than half a wavelength. This leads to grating effects when the beam is scanned digitally.
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An Experimental Digital Beamforming Sonar
1977Previous experimental results using a 250-kHz acoustic imaging system show the Potential usefulness of holographic processing in high resolution sonars 1,2 This paper presents the design and preliminary experimental results of a holographic sonar using a linear array, As presently configured, the system consists of a 128-element line array, a single ...
L. C. Granger +2 more
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Hybrid analog digital beamforming
2022In recent years, two of the main trends in wireless communication have been higher carrier frequencies and larger antenna arrays. Each trend by itself allows for a significant gain in system performance, but they are difficult to combine. The former trend, higher carrier frequencies in the millimeter-wave (mm-wave) range, offers an unprecedented ...
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