Systems and methods for signal frequency division in wireless communication systems

A system comprising:

• at least one antenna configured to receive a first diversity receive signal and a second diversity receive signal, the first diversity receive signal and the second diversity receive signal being received at a receive radio frequency and having signal diversity, and to transmit a first diversity transmit signal and a second diversity transmit signal, the first diversity transmit signal and the second diversity transmit signal being transmitted at a transmit radio frequency and having signal diversity;
• a first signal path having a first frequency converter configured to downconvert the first diversity receive signal from the receive radio frequency to a first receive intermediate frequency and to upconvert the first diversity transmit signal from a first transmit intermediate frequency to the transmit radio frequency;
• a second signal path having a second frequency converter configured to downconvert the second diversity receive signal from the receive radio frequency to a second receive intermediate frequency and to upconvert the second diversity transmit signal from a second transmit intermediate frequency to the transmit radio frequency;
• an N-plexer configured to provide the first diversity receive signal and the second diversity receive signal to a cable and to provide from the cable the first diversity transmit signal to the first signal path and the second diversity transmit signal to the second signal path;
• an other N-plexer configured to provide the first diversity transmit signal and the second diversity transmit signal to the cable and to provide from the cable the first diversity receive signal to a third signal path and the second diversity receive signal to a fourth signal path;
• and
• a modem configured to receive the first and second diversity receive signals from the third and fourth signal paths, to demodulate the first and second diversity receive signals to a received data signal, to receive a transmission data signal, to modulate the transmission data signal to the first diversity transmit signal at the first transmit intermediate frequency, and to modulate the transmission data signal to the second diversity transmit signal at the second transmit intermediate frequency.

A method comprising:

• receiving, from at least one antenna by an orthomode transducer, a first diversity receive signal and a second diversity receive signal, the first diversity receive signal and the second diversity receive signal being received at a receive radio frequency and having signal diversity;
• downconverting, by a first frequency converter electrically coupled to a first signal path, the first diversity receive signal from the receive radio frequency to a first receive intermediate frequency;
• downconverting, by a second frequency converter electrically coupled to a second signal path, the second diversity receive signal from the receive radio frequency to a second receive intermediate frequency;
• providing, by an N-plexer, the first diversity receive signal and the second diversity receive signal to a cable;
• providing, by the N-plexer, a first diversity transmit signal from the cable to the first signal path and a second diversity transmit signal from the cable to the second signal path;
• upconverting, by the first frequency converter electrically coupled to the first signal path, the first diversity transmit signal from a first transmit intermediate frequency to a transmit radio frequency;
• upconverting, by the second frequency converter electrically coupled to the second signal path, the second diversity transmit signal from a second transmit intermediate frequency to the transmit radio frequency;
• and
• transmitting, to the at least one antenna by the orthomode transducer, the first diversity transmit signal and the second diversity transmit signal, the first diversity transmit signal and the second diversity transmit signal being transmitted at the transmit radio frequency and having signal diversity;
• wherein the first diversity receive signal and the first diversity transmit signal are orthogonally polarized to the second diversity receive signal and the second diversity transmit signal, respectively.

A method comprising:

• receiving, by at least one antenna, a first diversity receive signal and a second diversity receive signal, the first diversity receive signal and the second diversity receive signal being received at a receive radio frequency and having signal diversity;
• downconverting, by a first frequency converter electrically coupled to a first signal path, the first diversity receive signal from the receive radio frequency to a first receive intermediate frequency;
• downconverting, by a second frequency converter electrically coupled to a second signal path, the second diversity receive signal from the receive radio frequency to a second receive intermediate frequency;
• providing, by an N-plexer, the first diversity receive signal and the second diversity receive signal to a cable;
• providing, by the N-plexer, a first diversity transmit signal from the cable to the first signal path and a second diversity transmit signal from the cable to the second signal path;
• upconverting, by the first frequency converter electrically coupled to the first signal path, the first diversity transmit signal from a first transmit intermediate frequency to a transmit radio frequency;
• upconverting, by the second frequency converter electrically coupled to the second signal path, the second diversity transmit signal from a second transmit intermediate frequency to the transmit radio frequency;
• transmitting, by the at least one antenna, the first diversity transmit signal and the second diversity transmit signal, the first diversity transmit signal and the second diversity transmit signal being transmitted at the transmit radio frequency and having signal diversity;
• providing, by an other N-plexer, the first diversity transmit signal and the second diversity transmit signal to the cable;
• providing, by the other N-plexer, the first diversity receive signal from the cable to a third signal path;
• providing, by the other N-plexer, the second diversity receive signal from the cable to a fourth signal path;
• receiving, by a modem, the first and second diversity receive signals from the third and fourth signal paths;
• demodulating, by the modem, the first and second diversity receive signals to a received data signal;
• receiving, by the modem, a transmission data signal;
• modulating, by the modem, the transmission data signal to the first diversity transmit signal at the first transmit intermediate frequency;
• and
• modulating, by the modem, the transmission data signal to the second diversity transmit signal at the second transmit intermediate frequency.

A method comprising:

• receiving, by at least one antenna, a first diversity receive signal and a second diversity receive signal, the first diversity receive signal and the second diversity receive signal being received at a receive radio frequency and having signal diversity;
• downconverting, by a first frequency converter electrically coupled to a first signal path, the first diversity receive signal from the receive radio frequency to a first receive intermediate frequency;
• downconverting, by a second frequency converter electrically coupled to a second signal path, the second diversity receive signal from the receive radio frequency to a second receive intermediate frequency, wherein the first and second receive intermediate frequencies are different;
• providing, by an N-plexer, the first diversity receive signal and the second diversity receive signal to a cable;
• providing, by the N-plexer, a first diversity transmit signal from the cable to the first signal path and a second diversity transmit signal from the cable to the second signal path;
• upconverting, by the first frequency converter electrically coupled to the first signal path, the first diversity transmit signal from a first transmit intermediate frequency to a transmit radio frequency;
• upconverting, by the second frequency converter electrically coupled to the second signal path, the second diversity transmit signal from a second transmit intermediate frequency to the transmit radio frequency;
• and
• transmitting, by the at least one antenna, the first diversity transmit signal and the second diversity transmit signal, the first diversity transmit signal and the second diversity transmit signal being transmitted at the transmit radio frequency and having signal diversity.