| 摘要 |
An EER amplifier for amplifying an RF signal includes: (II) a first RF amplifier for amplifying the phase portion of the signal; (III) an EER modulator for amplifying the envelope or baseband portion of the signal, including: A) a high frequency operational amplifier; B) a power amplifier; C) a feedback control loop including: ( 1 ) a current-to-voltage conversion amplifier having an input coupled to a current monitoring output of the power amplifier and an output, ( 2 ) an input buffer amplifier having an input coupled to receive the envelope signal and an output; ( 3 ) a summing amplifier having: (a) an input coupled to the outputs of: (a) the current-to-voltage conversion amplifier and (b) the input buffer amplifier, and (b) an output coupled to the current control input of the power amplifier.
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