Intermediate frequency filter for millimeter-wave carrier aggregation

A wireless communication apparatus, comprising:

• a high band millimeter wave (mmW) carrier aggregation (CA) receive port;
• a high band mixer coupled to the high band mmW CA receive port;
• a tunable high pass filter coupled to the high band mixer;
• a low band mmW CA receive port;
• a low band mixer coupled to the low band mmW CA receive port;
• a tunable low pass filter coupled to the low band mixer;
• and
• an intermediate frequency (IF) received signal multiplexer including a first input coupled to the tunable high pass filter, a second input coupled to the tunable low pass filter, and a merged IF CA signal output.

A method comprising:

• receiving, at a high band millimeter wave (mmW) carrier aggregation (CA) receive port, a first wireless data signal;
• downconverting the first wireless data signal to a high band intermediate frequency (IF) signal using a high band mixer, the high band mixer including a radio frequency (RF) receive signal input, a local oscillator (LO) input, and an IF signal output, wherein the RF receive signal input is coupled to the high band mmW CA receive port to receive the first wireless data signal;
• filtering the high band IF signal using a tunable high pass filter, the tunable high pass filter including an input and an output, wherein the input is coupled to the IF signal output of the high band mixer;
• receiving a second wireless data signal at a low band mmW CA receive port;
• downconverting the second wireless data signal to a low band IF signal using a low band mixer including an RF receive signal input, an LO input, and an IF signal output, wherein the RF receive signal input of the low band mixer is coupled to the low band mmW CA receive port to receive the second wireless data signal;
• filtering the low band IF signal using a tunable low pass filter, the tunable low pass filter including an input and an output, wherein the input is coupled to the IF signal output of the low band mixer, and wherein the output is coupled to a second input of the IF received signal multiplexer;
• and
• multiplexing the high band IF signal and the low band IF signal to generate a merged IF CA signal using an IF received signal multiplexer, the IF received signal multiplexer including a merged IF CA signal output, a first input, and the second input, wherein the first input is coupled to the output of the tunable high pass filter to receive the high band IF signal, and wherein the second input is coupled to the output of the tunable low pass filter to receive the low band IF signal.