This paper discusses design & measurement techniques for highly reliable & wideband Digital Multi beamforming Horn Array Antenna with gain adjustment capabilities for Space Applications. Complexity of feeding network has been reduced by many folds with the use of 24 dual coaxial fed circularly polarized conical horn antennas providing an excellent axial ratio of <2 dB for entire array highly recommended for satellite communication. Horn array antenna shows excellent wideband characteristics having bandwidth greater than 1GHz with an excellent VSWR<1.3. Horn array antenna holds the capability of transmission using both circular polarization as well as linear polarization. Horn array antenna exhibits high gain of 23.7 dB with multi beam operation. Independent element digital control enables the options for multiple beam forming, gain adjustment, & combinations of multiple adaptive beam generation discussed in detail. The chains from transmitter to antenna for beam forming network have also been discussed. Reliability analysis through antenna measurements show gain degradation due to failure of elements is less as compared to other antennas. Horn array antenna has been simulated & optimized on Ansoft HFSS v11.
[1]
Abdel-Badeeh M. Salem,et al.
Antenna Array Beamforming Using Neural Network
,
2008
.
[2]
T. Sehm,et al.
A large planar 39-GHz antenna array of waveguide-fed horns
,
1998
.
[3]
S. K. A. Rahim,et al.
A NOVEL ACTIVE ANTENNA BEAMFORMING NETWORKS USING BUTLER MATRICES
,
2009
.
[4]
F. De Flaviis,et al.
Microstrip antenna array with beamforming network for WLAN applications
,
2005,
2005 IEEE Antennas and Propagation Society International Symposium.
[5]
Y. Hao,et al.
A monolithic active conical horn antenna array for millimeter and submillimeter wave applications
,
2006,
IEEE Transactions on Antennas and Propagation.
[6]
T. Sehm,et al.
A high-gain 58-GHz box-horn array antenna with suppressed grating lobes
,
1999
.
[7]
H. Grubinger,et al.
An Active Electronic Ka-Band Antenna Beam-Forming Network based on Injection-Locked Local Oscillators
,
2007,
2007 IEEE/MTT-S International Microwave Symposium.