Phase shift module with an enhanced frequency multiplier and temperature compensation in local oscillator path

An antenna apparatus,

• an upconverter and/or downconverter (UDC) circuit comprising one or more frequency mixers;
• and
• a phase shift module, comprising:
• a phase shifter configured to receive a local oscillator signal and generate a phase-shifted signal that is phase-shifted by a phase shift with respect to the local oscillator signal, and
• a frequency multiplier configured to generate a frequency-multiplied signal having a frequency that is a multiple K of a frequency of the local oscillator signal, where K is greater than 1, based on the phase-shifted signal and further based on an inverted phase-shifted signal,
• wherein the one or more frequency mixers of the UDC circuit are configured to perform frequency mixing using the frequency-multiplied signal generated by the frequency multiplier.

An antenna apparatus, comprising:

• a temperature compensation circuit, configured to determine a phase shift function indicative of phase shift variations as a function of temperature based on measurements performed at two different temperatures, the measurements indicative of at least one of:
• a phase of a signal to be transmitted, measured at an output of an upconverter and/or downconverter (UDC) circuit,
• a phase of a signal transmitted by at least one antenna element of an antenna array,
• a phase of a signal received by one or more antenna elements of the antenna array, measured at an output of the one or more antenna elements, and
• a phase of a signal generated by the UDC circuit based on the signal received by the one or more antenna elements;
• and
• a phase shift module, configured to apply a phase shift to a local oscillator signal to generate a phase-shifted local oscillator signal, the phase shift based on the phase shift function.