Method and apparatus for determining antenna radiation patterns
First Claim
1. A method for determining the radiation pattern of a first antenna, where the antenna is placed fixedly in the quiet zone of a focusing system having a focal plane, comprising the steps of:
- placing a modulated scattering probe array in the focal plane of the focusing system,placing a second antenna near the probe array,causing one of the two antennas to transmit electromagnetic radiation so as to cause the modulated scattering probe array to retransmit electromagnetic radiation,causing the other antenna to collect the electromagnetic radiation retransmitted by the probe array,determining, from the retransmitted electromagnetic radiation collected by the other antenna, a signal which represents the field at each point of the probe array, anddisplaying this signal as the radiation pattern of the first antenna.
1 Assignment
0 Petitions
Accused Products
Abstract
A compact range for the determination of the radiation pattern of a first antenna (1), comprises a focusing system (3) and apparatus (2) supporting the first antenna in the quiet zone of the focusing system. For that purpose, the base comprises a modulated-retransmission probe array (6, 16) mounted in the focal plane (7) of the focusing system, a second antenna (10, 17) mounted near the probe array, apparatus (13) to determine, from the electromagnetic radiation retransmitted by the probe array and collected by one of the antennas during the transmission of electromagnetic radiation by the other, a signal SI representing the field at each point of the probe array, and a display (14) for displaying the signal.
16 Citations
20 Claims
-
1. A method for determining the radiation pattern of a first antenna, where the antenna is placed fixedly in the quiet zone of a focusing system having a focal plane, comprising the steps of:
-
placing a modulated scattering probe array in the focal plane of the focusing system, placing a second antenna near the probe array, causing one of the two antennas to transmit electromagnetic radiation so as to cause the modulated scattering probe array to retransmit electromagnetic radiation, causing the other antenna to collect the electromagnetic radiation retransmitted by the probe array, determining, from the retransmitted electromagnetic radiation collected by the other antenna, a signal which represents the field at each point of the probe array, and displaying this signal as the radiation pattern of the first antenna. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A compact range for the determination of the radiation pattern of a first antenna, comprising a focusing system having a focal plane and means fixedly supporting said first antenna in the quiet zone of the focusing system, said compact range comprising:
-
a modulated scattering probe array mounted in the focal plane of said focusing system for retransmitting received radiation, a second antenna mounted near said probe array, means for generating, from electromagnetic radiation retransmitted by the probe array and collected by one of the antennas during transmission of electromagnetic radiation by the other antenna, a signal representing the radiation pattern of said first antenna, and means for displaying said signal. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
-
-
19. A method for determining the radiation pattern of an antenna, where the antenna is placed fixedly in the quiet zone of a focusing reflector having a focal plane, comprising the steps of:
-
placing a modulated probe array in the focal plane of the focusing reflector, causing the antenna to transmit electromagnetic radiation, receiving the transmitted electromagnetic radiation in the modulated probe array, determining, from the received electromagnetic radiation collected by the modulated probe array, a signal which represents the electromagnetic radiation field at each point of the probe array, and displaying this signal as the radiation pattern of the antenna.
-
-
20. A compact range for the determination of the radiation pattern of an antenna, comprising:
-
a focusing reflector having a focal plane; means for fixedly supporting said antenna in the quiet zone of said focusing reflector; a modulated probe array mounted in the focal plane of said focusing reflector for receiving radiation transmitted by said antenna and reflected by said focusing reflector; means for generating, from electromagnetic radiation received by the probe array, a signal representing the radiation pattern of said antenna, and means for displaying said signal.
-
Specification