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.

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.

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.

The present disclosure provides a hetero-integrated terahertz low-noise miniaturized image frequency rejection transceiver front-end, including an intermediate frequency circuit and a terahertz circuit arranged up and down, where the terahertz circuit includes a local oscillator frequency tripler, a 135 3 dB filter coupler, a radio frequency waveguide power divider, and two quartz hetero-integrated subharmonic mixers; resonant cavities of an input unit, a first output unit, an isolation unit, and a second output unit of the 135 3 dB filter coupler are sequentially coupled through resonant grooves to form a ring structure, a cavity length of the resonant cavity of the input unit is twice that of the resonant cavities of the other three units, and an electrical length of a waveguide of the first output unit is 45 different from that of a waveguide of the second output unit.

A frequency multiplier includes an input terminal, an output terminal, a first transistor having a first gate to which a radiofrequency signal is input from the input terminal, a first drain from which an output signal is issued to the output terminal, and a first source, a second transistor having a second gate, a second source to which the radiofrequency signal is input from the input terminal, and a second drain from which an output signal is issued to the output terminal, and a stabilizing resistor which is a resistor connected to the second gate, wherein no resistor exists on the path for the radiofrequency signal, and wherein the stabilizing resistor suppresses a reflex gain produced by the second transistor.

A frequency multiplier includes an input terminal, an output terminal, a first transistor having a first gate to which a radiofrequency signal is input from the input terminal, a first drain from which an output signal is issued to the output terminal, and a first source, a second transistor having a second gate, a second source to which the radiofrequency signal is input from the input terminal, and a second drain from which an output signal is issued to the output terminal, and a stabilizing resistor which is a resistor connected to the second gate, wherein no resistor exists on the path for the radiofrequency signal, and wherein the stabilizing resistor suppresses a reflex gain produced by the second transistor.