RF antenna coupling structure

A radio frequency integrated circuit comprises:

• transmitter section that includes a transmit filter module, a transmit mixing module, and a power amplifier interoperably coupled to convert outbound low intermediate frequency (IF) signals into outbound radio frequency (RF) signals;
• receiver section that includes a low noise amplifier, a receive mixing module, and a receiver filter module interoperably coupled to convert inbound RF signals into inbound low IF signals;
• and
• an antenna coupling structure that includes:
• a first transformer having a primary winding and a secondary winding, wherein the primary winding of the first transformer is operably coupled to the power amplifier, and wherein the secondary winding of the first transformer has a desired output impedance;
• a second transformer having a primary winding and a secondary winding, wherein the primary winding of the second transformer is operably coupled to the low noise amplifier, and wherein the secondary winding of the second transformer has a desired output impedance;
• and
• a transformer balun having a differential winding and a single-ended winding, wherein the differential winding is operably coupled to the secondary windings of the first and second transformers and the single-ended winding is operably coupled to an antenna.