Transmitter with high frequency amplification

A transmitter, comprising:

• a first path configured to receive a signal, the signal including low frequency components between approximately zero hertz and one-half of a symbol rate of the signal and high frequency components that are between approximately one-half of the symbol rate and the symbol rate of the signal, wherein at least one of the high frequency components is equal to the symbol rate of the signal, to amplify all of the high frequency components of the signal, and to output the high frequency component amplified signal;
• a second path configured to receive the signal, to amplify the low and the high frequency components of the signal, including the at least one of the high frequency components that is equal to the symbol rate of the signal, and to output the amplified signal, the second path being a single path that is not formed by parallel paths;
• a data circuit outputting the signal received by the first path;
• and
• a node coupled to the first path and the second path and configured such that the high frequency component amplified signal and the amplified signal combine at the node.

A circuit, comprising:

• a first node configured to receive a first signal of a differential signal pair;
• a first path coupled to the first node and configured to receive the first signal from the first node and to output a first path signal, the first path including a first amplifier configured to amplify high frequency components of the first signal received to generate the first path signal;
• a second path coupled to the first node and configured to receive the first signal from the first node and to output a second path signal, the second path including a second amplifier configured to amplify all of the frequency components of the first signal to generate the second path signal;
• a second node coupled to the first path and the second path and configured such that the first path signal and the second path signal combine at the second node;
• a third node configured to receive a second signal of the differential signal pair;
• a coupling circuit configured to electrically couple the first node and the third node, the coupling circuit including:
• a first inverter that includes an input electrically coupled to the first node and that includes an output electrically coupled to the third node;
• and
• a second inverter that includes an input electrically coupled to the output of the first inverter and the third node and that includes an output electrically coupled to the input of the first inverter and the first node;
• a third path coupled to the third node and configured to receive the second signal from the third node and to output a third path signal, the third path including a third amplifier configured to amplify high frequency components of the second signal to generate the third path signal;
• a fourth path coupled to the third node and configured to receive the second signal from the third node and to output a fourth path signal based on the amplified second signal, the fourth path including a fourth amplifier configured to amplify all of the frequency components of the second signal to generate the fourth path signal;
• and
• a fourth node coupled to the third path and the fourth path such that the third path signal and the fourth path signal combine at the fourth node.