Antenna in package production test

A method of testing an antenna-in-package (AiP) device, the method comprising:

• pressing an AiP device disposed within an opening of a socket toward a circuit board such that the AiP device is electrically coupled to the circuit board via input/output connections of the AiP device and of the circuit board;
• transmitting, by a transmit (Tx) antenna of the AiP device, a radio frequency (RF) signal;
• receiving, by a first antenna of a loadboard, the RF signal, wherein the loadboard is disposed in the opening of the socket over the AiP device;
• relaying, by a coupling network, the RF signal from the first antenna to a second antenna of the loadboard;
• receiving, by a receive (Rx) antenna of the AiP device, the RF signal transmitted by the second antenna of the loadboard;
• demodulating the RF signal received by the Rx antenna of the AiP device to generate a first demodulated signal;
• detecting a power of the first demodulated signal;
• comparing the power of the first demodulated signal with a power of the RF signal transmitted by the Tx antenna of the AiP device;
• and
• determining that the AiP device is defective if a difference between the power of the first demodulated signal and the power of the RF signal is outside a first pre-determined range.

A method of testing an antenna-in-package (AiP) device, the method comprising:

• placing a loadboard on the AiP device, wherein the loadboard has a first antenna and a second antenna that are aligned with a transmit (Tx) antenna of the AiP device and a receive (Rx) antenna of the AiP device, respectively;
• receiving, by the first antenna of the loadboard, a radio frequency (RF) signal transmitted by the Tx antenna of the AiP device;
• relaying, by a coupling network, the RF signal from the first antenna to the second antenna of the loadboard;
• transmitting, by the second antenna of the loadboard, the relayed RF signal to the Rx antenna of the AiP device;
• mixing, by a mixer of the AiP device, the RF signal received at the Rx antenna with an output signal of a local oscillator (LO) to produce a demodulated signal having a pre-determined frequency component;
• detecting a signal level of the pre-determined frequency component of the demodulated signal;
• and
• determining that the AiP device is defective upon detection that the detected signal level differs from a power of the RF signal by more than a pre-determined threshold.