The present invention relates to an imaging device (1) comprising: a first microwave sensor or set of microwave sensors (2), preferably radiometric sensors, each microwave sensor (2) being configured to pick up electromagnetic radiation emitted or reflected by bodies or objects situated in a detection zone of said microwave sensor (2); and reflector means (6) configured to reflect the electromagnetic radiation that can be picked up by the first microwave sensor or the set of microwave sensors (2). In particular, the reflector means (6) are mounted to move in the detection zone of each microwave sensor (2) in such a manner as to move said detection zone by moving the reflector means (6). The invention also provides a corresponding microwave imaging method.

A test device 1 that measures the transmission properties or reception properties of the test object 100 having the test antenna 110, and includes an anechoic box 50, a plurality of test antennas 6 that transmit or receive radio signals to or from the antenna under tests, a posture changeable mechanism 56 that changes the posture of the test object arranged in the quiet zone QZ, a measurement device 2 that measures the transmission properties or reception properties of the test object with respect to the test object whose posture is changed by the posture changeable mechanism using the test antenna, and the reflector 7 that radio signal is reflected, The plurality of test antennas include a reflection type test antenna 6a and the plurality of direct-type test antennas 6b, 6c, 6d.

A test device 1 that measures the transmission properties or reception properties of the test object 100 having the test antenna 110, and includes an anechoic box 50, a plurality of test antennas 6 that transmit or receive radio signals to or from the antenna under tests, a posture changeable mechanism 56 that changes the posture of the test object arranged in the quiet zone QZ, a measurement device 2 that measures the transmission properties or reception properties of the test object with respect to the test object whose posture is changed by the posture changeable mechanism using the test antenna, and the reflector 7 that radio signal is reflected, The plurality of test antennas include a reflection type test antenna 6a and the plurality of direct-type test antennas 6b, 6c, 6d.

In a transmitting-side control apparatus (30), a transmission control unit (32) controls a radiator (11) to transmit an OAM known signal formed by one common OAM transmission mode at each of transmitting-side relative position candidates. An acquisition unit (33) acquires a feedback signal including information about a use transmitting-side relative position based on a reception strength of the OAM known signal transmitted under the control of the transmission control unit (32). An adjustment unit (34) adjusts a relative position between the radiator (11) and a focal point of a reflecting mirror (12) to the use transmitting-side relative position indicated by the information included in the feedback signal.

Examples disclosed herein relate to a meta-structure based reflectarray for beamforming wireless applications and a method of operation of passive reflectarrays in an indoor environment. The method includes receiving, by a plurality of passive reflectarrays, a Radio Frequency (RF) signal from a source. The method also includes reflecting, by the plurality of passive reflectarrays, the RF signal to generate a plurality of RF beams to a respective target coverage area, in which each of the plurality of RF beams increases a multipath gain along a signal path between a corresponding passive reflectarray to the respective target coverage area.

Examples disclosed herein relate to a meta-structure based reflectarray for beamforming wireless applications and a method of operation of passive reflectarrays in an indoor environment. The method includes receiving, by a plurality of passive reflectarrays, a Radio Frequency (RF) signal from a source. The method also includes reflecting, by the plurality of passive reflectarrays, the RF signal to generate a plurality of RF beams to a respective target coverage area, in which each of the plurality of RF beams increases a multipath gain along a signal path between a corresponding passive reflectarray to the respective target coverage area.

A 2.2M offset antenna includes a reflector hub; a positioner for supporting the reflector hub; a plurality of reflector panels including a first plurality of side panels and a second plurality of side panels, the first plurality of side panels and the second plurality of side panels each being selectively securable to the reflector hub; each side panel of the first plurality of side panels being uniquely sized relative to the other side panels of the first plurality of side panels such that the first plurality of side panels may be nested together in a stacked configuration when separated from reflector hub; and each side panel of the second plurality of side panels being uniquely sized relative to the other side panels of the second plurality of side panels such that the second plurality of side panels may be nested together in a stacked configuration when separated from reflector hub.

A 2.2M offset antenna includes a reflector hub; a positioner for supporting the reflector hub; a plurality of reflector panels including a first plurality of side panels and a second plurality of side panels, the first plurality of side panels and the second plurality of side panels each being selectively securable to the reflector hub; each side panel of the first plurality of side panels being uniquely sized relative to the other side panels of the first plurality of side panels such that the first plurality of side panels may be nested together in a stacked configuration when separated from reflector hub; and each side panel of the second plurality of side panels being uniquely sized relative to the other side panels of the second plurality of side panels such that the second plurality of side panels may be nested together in a stacked configuration when separated from reflector hub.

A testing system and a testing method with multiple antennas are provided. The system comprises an anechoic chamber for containing a device under test, at least two feed antennas, a movable shaped reflector, and a reflector positioner rotationally coupled to the shaped reflector. The reflector positioner provides a rotation mechanism that rotates the shaped reflector and directs its focal point towards a field generated by each of the at least two feed antennas.

A testing system and a testing method with multiple antennas are provided. The system comprises an anechoic chamber for containing a device under test, at least two feed antennas, a movable shaped reflector, and a reflector positioner rotationally coupled to the shaped reflector. The reflector positioner provides a rotation mechanism that rotates the shaped reflector and directs its focal point towards a field generated by each of the at least two feed antennas.