Name
Abstract | ||
|---|---|---|
Multiple independent radio-frequency (RF) beams find applications in communications, radio astronomy, radar and microwave imaging. An N-point fast Fourier transform (FFT) applied spatially across an array of receiver antennas provides N-independent RF beams at N/2 log2N multiplier complexity. Here, a low-complexity multiplierless approximation for the 8-point FFT is presented for RF beamforming, using only 26 additions. The algorithm provides eight beams that closely resemble the antenna array patterns of the traditional FFT-based beamformer albeit without using multipliers. The proposed FFT-like algorithm was verified on-chip using a Xilinx Virtex-6 Lx240T field programmable gate array (FPGA) device. The FPGA implementation indicated bandwidth of 369 MHz for each of the independent receive-mode RF beams. |
Year | DOI | Venue |
|---|---|---|
2015 | 10.1049/el.2014.3561 | Electronics Letters |
Keywords | Field | DocType |
CMOS integrated circuits,antenna arrays,approximation theory,fast Fourier transforms,field programmable gate arrays,radio networks,CMOS simulation,CMOS technology,FFT based beamformer,FPGA device,RF beamforming,RF beams,RF multibeam receivers,antenna array patterns,complementary metal oxide semiconductor,fast Fourier transform,field programmable gate array,microwave imaging,multibeam RF aperture,multiple independent radio frequency,multiplier complexity,multiplierless FFT approximation,multiplierless approximation,radar imaging,radio astronomy,receiver antenna array | Aperture,Radar,Beamforming,Radar imaging,Antenna array,Field-programmable gate array,Electronic engineering,Fast Fourier transform,Microwave imaging,Mathematics | Journal |
Volume | Issue | ISSN |
50 | 24 | 0013-5194 |
Citations | PageRank | References |
1 | 0.38 | 1 |
Authors | ||
6 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| D. Suarez | 1 | 1 | 0.72 |
| Renato J. Cintra | 2 | 218 | 26.82 |
| Fábio M. Bayer | 3 | 126 | 12.89 |
| A. Sengupta | 4 | 1 | 0.38 |
| Sunera Kulasekera | 5 | 40 | 4.63 |
| Arjuna Madanayake | 6 | 242 | 53.31 |