When the transmission output is lowered, the curren applied to a power amplifier circui 2 is reduced, the rapid reduction in the power supply voltage of the battery 1 is suppressed and the communication is maintained for a prescribed time without causing rapid deterioration of communication....
Abstract: A new type of Automatic Gain Control(AGC) circuit with the functions of over temperature processing and battery voltage tracking was designed for class D power amplifier. The AGC circuit blended the chip over temperature processing in AGC gain adjustment, solving the problem of sound ...
When the transmission output is lowered, the curren applied to a power amplifier circui 2 is reduced, the rapid reduction in the power supply voltage of the battery 1 is suppressed and the communication is maintained for a prescribed time without causing rapid deterioration of communication. 展开...
the reduction in the transmission output of a power amplifier 4. When the transmission output is lowered, the curren applied to a power amplifier circui 2 is reduced, the rapid reduction in the power supply voltage of the battery 1 is suppressed and the communication is maintained for a ...
power the transimpedance amplifier, which makes the gain flat in the band and the bandwidth change reduced. In order to extend the dynamic range of the input signal, the variable MOS resistor is introduced to realize the Auto Gain Control(AGC) function, so that the amplifier can operate at ...
Thus, it is very suitable for use in portable and battery-powered equipment such as hearing aid instrument and wireless radio device. The proposed AGC consists of current controlled exponential amplifier, current-mode precision rectifier, current-mode low pass filter and current-mode integrator. The...
20 GHz时发生器相位噪声测量结果, RF输入功率 = −10 dBm 0 REF: 0dBc/Hz –0 CARRIER POWER = –4.53dBm MARKER 1: 10.0kHz, –114.71dBc/Hz –40 –60 –80 –100 –120 –140 –160 –180 –200 100 RAW SMOOTHED 1 1k 10k 100k FREQUENCY OFFSET (Hz) 1M 图15. AGC RF输出端测得的相位...
参照图2中所示,可变增益放大耦合电路102可以包括第一可变增益放大器(variablegainamplifier,vga)1021、耦合器1022和第二vga1023。低噪声放大器101的输出端连接第一vga1021的输入端;第一vga1021的输出端连接耦合器1022的输入端;耦合器1022的直通输出端连接第二vga1023的输入端,耦合器1022的耦合输出端作为可变增益放大耦合...
EUA6230 2.4W, Mono Class G Audio Power Amplifier with AGC DESCRIPTION The EUA6230 is a mono Class G power amplifier with an integrated inverting charge-pump power supply and automatic gain control (AGC). The charge pump can supply up to 500mA of peak out-put current over a 2.7V to 5V...
The resulting RSSI voltage is proportional to the power applied at the Low Noise Amplifier input (LNI). The voltage for VTHRES can be derived from a resistor divider that uses the precision +3 V output from pin 24 of the receiver. When the RSSI signal is higher than VTHRES, the ...