## Superdirective Magnetic Dipole Array as a First-Order Probe for Spherical Near-Field Antenna Measurements

Publication: Research - peer-review › Journal article – Annual report year: 2012

### Standard

**Superdirective Magnetic Dipole Array as a First-Order Probe for Spherical Near-Field Antenna Measurements.** / Kim, Oleksiy S.; Pivnenko, Sergey; Breinbjerg, Olav.

Publication: Research - peer-review › Journal article – Annual report year: 2012

### Harvard

*I E E E Transactions on Antennas and Propagation*, vol 60, no. 10., 10.1109/TAP.2012.2207363

### APA

*I E E E Transactions on Antennas and Propagation*,

*60*(10). 10.1109/TAP.2012.2207363

### CBE

### MLA

*I E E E Transactions on Antennas and Propagation*. 2012. 60(10). Available: 10.1109/TAP.2012.2207363

### Vancouver

### Author

### Bibtex

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### RIS

TY - JOUR

T1 - Superdirective Magnetic Dipole Array as a First-Order Probe for Spherical Near-Field Antenna Measurements

AU - Kim,Oleksiy S.

AU - Pivnenko,Sergey

AU - Breinbjerg,Olav

PY - 2012

Y1 - 2012

N2 - The theory as well as numerical and experimental results are presented for a superdirective array composed of closely spaced electrically small resonant magnetic dipole elements. The array operates on a metal ground plane and can exhibit a maximum directivity of 11.5 dBi, 15.2 dBi, and 17.8 dBi (including 3 dB due to the ground plane), for 2, 3, and 4 magnetic dipoles, respectively. The array is self-resonant and is directly excited by a 50-ohm coaxial cable through the ground plane. The array radiates essentially the $\vert\mu\vert=1$ spherical modes, which, despite a narrow bandwidth, makes it an excellent first-order probe for spherical near-field antenna measurements at low frequencies.

AB - The theory as well as numerical and experimental results are presented for a superdirective array composed of closely spaced electrically small resonant magnetic dipole elements. The array operates on a metal ground plane and can exhibit a maximum directivity of 11.5 dBi, 15.2 dBi, and 17.8 dBi (including 3 dB due to the ground plane), for 2, 3, and 4 magnetic dipoles, respectively. The array is self-resonant and is directly excited by a 50-ohm coaxial cable through the ground plane. The array radiates essentially the $\vert\mu\vert=1$ spherical modes, which, despite a narrow bandwidth, makes it an excellent first-order probe for spherical near-field antenna measurements at low frequencies.

KW - Electrically small antennas,

KW - First-order probe

KW - Magnetic dipole

KW - Spherical near-field antenna measurements

KW - Superdirectivity

KW - Supergain array

U2 - 10.1109/TAP.2012.2207363

DO - 10.1109/TAP.2012.2207363

M3 - Journal article

VL - 60

JO - I E E E Transactions on Antennas and Propagation

T2 - I E E E Transactions on Antennas and Propagation

JF - I E E E Transactions on Antennas and Propagation

SN - 0018-926X

IS - 10

ER -