Applications of the SRV constraint in broadband pattern synthesis
Signal Processing
Adaptive wideband beamforming with sensor delay-lines
Signal Processing
Design of frequency invariant beamformer without temporal filtering
IEEE Transactions on Signal Processing
Multirate method for constant beamwidth beamforming of nested array
WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
Selective frequency invariant uniform circular broadband beamformer
EURASIP Journal on Advances in Signal Processing - Special issue on microphone array speech processing
Broadband beamforming using Laguerre filters
Signal Processing
Bit error rate reduction for circular ultrawideband antenna by dynamic differential evolution
International Journal of RF and Microwave Computer-Aided Engineering
| Hi-index | 35.69 |
Smart antenna techniques at the base station can dramatically improve the performance of the mobile radio system by employing spatial filtering. The design of a fully spatial signal processor using rectangular array configuration is proposed. Two-dimensional (2-D) spatial filters that can be implemented by microstrip technology are capable of filtering the received signal in the angular domain as well as the frequency domain. Furthermore, it has wideband properties and, hence, eliminates the requirement of different antenna spacing for applications including various carrier frequencies. The desired frequency selectivity of the smart antenna can be combined with compensation of the undesired frequency performance of a single antenna element, and the result is quite satisfactory for practical implementation. In addition, if the elements of the array are not perfectly omnidirectional or frequency independent, we can compensate for these deficiencies in the design algorithm. Two different algorithms for calculating the real-valued weights of the antenna elements are proposed. The first algorithm is more complex but leads to sharper beams and controlled performance. The second method is simpler but has wider beam and lower fractional bandwidth. Some computer simulation results demonstrating the directional beam patterns of the designed beamformers are also presented.