Broadband receiver for multi-band millimeter-wave wireless communication

A radio frequency (RF) frontend circuit, comprising:

• a transmitting and receiving (T/R) switch to be coupled to an antenna;
• an RF transmitter coupled to the T/R switch to transmit first RF signals via the antenna;
• and
• an RF receiver coupled to the T/R switch to receive second RF signals via the antenna, wherein the T/R switch couples the RF transmitter or the RF receiver to the antenna at a particular point in time, wherein the RF receiver comprises:
• a low noise amplifier (LNA) to receive and amplify the second RF signals,
• a transformer-based in-phase quadrature (IQ) generator to generate a differential in-phase local oscillator (LOI) signal and a differential local oscillator quadrature (LOQ) signal based on a local oscillator (LO) signal received from a local oscillator,
• a plurality of load resistors coupled to an output of the transformer-based IQ generator, wherein each of the plurality of load resistors couples one of the differential LOI and the differential LOQ signals to a predetermined bias voltage, and
• a downconverter having one or more mixers coupled to the LNA and the transformer-based IQ generator to receive and mix the amplified RF signals with the differential LOI and the differential LOQ signals to down convert the amplified RF signals into intermediate frequency (IF) signals, wherein the IF signals are to be processed by a signal processing module.

A mobile device, comprising:

• an antenna;
• a radio frequency (RF) receiver to receive RF signals via the antenna, the RF receiver including:
• a low noise amplifier (LNA) to receive and amplify the RF signals,
• a transformer-based in-phase quadrature (IQ) generator to generate a differential in-phase local oscillator (LOI) signal and a differential quadrature local oscillator (LOQ) signal based on a local oscillator (LO) signal received from a local oscillator,
• a plurality of load resistors coupled to an output of the transformer-based IQ generator, wherein each of the plurality of load resistors couples one of the differential LOI and the differential LOQ signals to a predetermined bias voltage, and
• a downconverter having one or more mixers coupled to the LNA and the transformer-based IQ generator to receive and mix the amplified RF signals with the differential LOI and the differential LOQ signals to down convert the amplified RF signals into intermediate frequency (IF) signals, wherein the IF signals are to be processed by a signal processing module;
• and
• a signal processor to process the IF signals.