A frequency doubler is provided that filters an input signal to form I and Q components responsive to a tuning signal. A single sideband mixer mixes the I and Q components with I and Q components of a local oscillator signal to form an output signal having a frequency of twice the frequency of the input signal.

A frequency doubler is provided that filters an input signal to form I and Q components responsive to a tuning signal. A single sideband mixer mixes the I and Q components with I and Q components of a local oscillator signal to form an output signal having a frequency of twice the frequency of the input signal.

Disclosed is a frequency multiplication apparatus including a first frequency multiplier receiving a first signal having a first frequency and outputting a second signal having a second frequency by multiplying the first frequency by n (n being a positive integer), a second frequency multiplier receiving the second signal and outputting a third signal having a third frequency by multiplying the second frequency by m (m being a positive integer), and a coupler connected between an output of the first frequency multiplier and an input of the second frequency multiplier and outputting a part of the second signal.

Disclosed is a frequency multiplication apparatus including a first frequency multiplier receiving a first signal having a first frequency and outputting a second signal having a second frequency by multiplying the first frequency by n (n being a positive integer), a second frequency multiplier receiving the second signal and outputting a third signal having a third frequency by multiplying the second frequency by m (m being a positive integer), and a coupler connected between an output of the first frequency multiplier and an input of the second frequency multiplier and outputting a part of the second signal.

Aspects of the present disclosure provide a low power differential frequency multiplier. An example frequency multiplier circuit generally includes a first set of transistors, a second set of transistors, and a resonant circuit. The first set of transistors comprises a first transistor and a second transistor, wherein each of the transistors in the first set is a first type of transistor. The second set of transistors comprises a third transistor and a fourth transistor, wherein each of the transistors in the second set is a second type of transistor. The resonant circuit has a first terminal coupled to the first set of transistors and a second terminal coupled to the second set of transistors, wherein the resonant circuit comprises an inductive element and a capacitive element coupled in parallel with the inductive element.

Aspects of the present disclosure provide a low power differential frequency multiplier. An example frequency multiplier circuit generally includes a first set of transistors, a second set of transistors, and a resonant circuit. The first set of transistors comprises a first transistor and a second transistor, wherein each of the transistors in the first set is a first type of transistor. The second set of transistors comprises a third transistor and a fourth transistor, wherein each of the transistors in the second set is a second type of transistor. The resonant circuit has a first terminal coupled to the first set of transistors and a second terminal coupled to the second set of transistors, wherein the resonant circuit comprises an inductive element and a capacitive element coupled in parallel with the inductive element.

An apparatus for performing a frequency multiplication of an mm-wave wave signal is provided. The apparatus includes a first differential circuit that is capable of receiving a 0 phase component of an input signal and a 180 phase component of the input signal having a first frequency. The first differential circuit provides a first output signal that is twice the frequency and is in phase(0) based on the 0 the 180 phase components of the input signal. The apparatus also includes a second differential circuit that is capable of receiving a 90 phase component of the input signal and a 270 phase component of the input signal, and provide a first output signal that is twice the frequency and out of phase(180). The apparatus also includes a differential transformer that is configured to receive the first output signal and the second output signal. The differential transformer is configured to provide a differential output signal that has a second frequency that is twice the first frequency.

An apparatus for performing a frequency multiplication of an mm-wave wave signal is provided. The apparatus includes a first differential circuit that is capable of receiving a 0 phase component of an input signal and a 180 phase component of the input signal having a first frequency. The first differential circuit provides a first output signal that is twice the frequency and is in phase(0) based on the 0 the 180 phase components of the input signal. The apparatus also includes a second differential circuit that is capable of receiving a 90 phase component of the input signal and a 270 phase component of the input signal, and provide a first output signal that is twice the frequency and out of phase(180). The apparatus also includes a differential transformer that is configured to receive the first output signal and the second output signal. The differential transformer is configured to provide a differential output signal that has a second frequency that is twice the first frequency.

Antenna modules and systems, and applications and methods of manufacturing thereof, are described herein. An example radio frequency (RF) signal transmitter includes a data signal port to receive a baseband data signal; a carrier signal port to receive an initial carrier signal; and an antenna module coupled to the signal ports. The antenna module includes: a substrate with a front face that has a phased array of active antenna elements that includes at least two columns of the active antenna elements; and a rear face that has, for each column, a RF signal launcher to receive a RF data signal for the column; and a transmitting module mounted to the rear face. The transmitting module has, for each column of active antenna elements: a combiner to form the RF data signal; and a RF signal port to transmit the RF data signal to the RF signal launcher.

Antenna modules and systems, and applications and methods of manufacturing thereof, are described herein. An example radio frequency (RF) signal transmitter includes a data signal port to receive a baseband data signal; a carrier signal port to receive an initial carrier signal; and an antenna module coupled to the signal ports. The antenna module includes: a substrate with a front face that has a phased array of active antenna elements that includes at least two columns of the active antenna elements; and a rear face that has, for each column, a RF signal launcher to receive a RF data signal for the column; and a transmitting module mounted to the rear face. The transmitting module has, for each column of active antenna elements: a combiner to form the RF data signal; and a RF signal port to transmit the RF data signal to the RF signal launcher.