In this paper, we describe the near-field measurements of
the surface of a 120 GHz reflectarray. The reconfigurable
offset-fed reflectarray under development consist of
approximately 3700 coplanar patch antenna elements which
are individually controlled by 4-state
micro-electro-mechanical (MEMS) phase shifters.
Measurements of a static reflectarray preceding the
MEMS-controlled one are done in order to characterize the
behavior of individual antenna elements of the
reflectarray. Measurement setup, probe selection and the
effect of the directional coupler are described.
Amplitude and phase patterns of the reflectarray are
shown. Also the main characteristics of the static
reflectarray under test are presented.
|Conference||9th European Radar Conference, EuRAD 2012 - Held as Part of European Microwave Week, EuMW 2012|
|Abbreviated title||EuRAD 2012|
|Period||31/10/12 → 2/11/12|
- antenna measurements
- near-field-probe measurements