Rectenna array for detecting power radiated pattern of microwave or millimeter-wave signals

A system for measuring a power radiated pattern of an incident radio frequency (RF) signal indicating spatial distribution characteristics of a device under test (DUT), the system comprising:

• a plurality of antenna elements arranged in an array,
• wherein the plurality of antenna elements comprise a plurality of antennas and a plurality of diodes coupled to the plurality of antennas, respectively,
• wherein each antenna of the plurality of antennas comprises a co-planar high gain antenna, and
• wherein each diode of the plurality of diodes has a fixed zero bias, such that the plurality of diodes receive the incident RF signal through the plurality of antennas to which the plurality of diodes are respectively coupled, and rectify the incident RF signal to DC voltages that are proportional to power of the incident RF signal, enabling the plurality of antenna elements to operate in a detect mode for detecting radiated power.

A system for measuring a power radiated pattern of an incident radio frequency (RF) signal indicating spatial distribution characteristics of a device under test (DUT), the system comprising:

• a plurality of antenna elements arranged in an array,
• wherein the plurality of antenna elements comprise a plurality of antennas and a plurality of diodes coupled to the plurality of antennas, respectively,
• wherein each antenna of the plurality of antennas comprises a co-planar high gain antenna, and
• wherein each antenna of the plurality of antennas has a radar cross-section (RCS) that is too small for the plurality of antenna elements to operate in a reflect mode, so that the plurality of antenna elements operate only in a detect mode for detecting radiated power.