| 摘要 |
In a preferred embodiment, a gain control circuit employs variable gain circuitry and a variable frequency converter, both controlled by a processor. The processor controls the carrier frequency of an RF modulated output signal of the circuit by controlling the frequency converter. The processor also preferably controls the gain of the variable gain circuitry as a function of both the output carrier frequency and temperature, as measured by a temperature sensing element. Preferably, the gain is controlled to maintain a constant gain over specified operating frequency and temperature ranges. The gain control circuit can be employed within a transceiver of a wireless communication terminal. Similar gain control circuitry can be utilized within a base station transceiver in which frequency channels are dynamically allocable among a plurality of gain-controlled amplification circuits.
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