Regulation of an amplification apparatus
View Patent ↗An amplification apparatus includes an amplifier. The amplification apparatus includes a bias voltage circuitry coupled to the amplifier to provide a bias voltage thereto. The amplification apparatus includes a supply voltage circuitry coupled to the amplifier to provide a supply voltage thereto. The supply voltage circuitry is coupled to the bias voltage circuitry. The bias voltage circuitry is configured to provide the bias voltage depending on the supply voltage.
1. Amplification apparatus comprising:
an amplifier;
a bias voltage circuitry coupled to the amplifier to provide a bias voltage thereto;
a supply voltage circuitry coupled to the amplifier to provide a supply voltage thereto;
wherein the supply voltage circuitry is coupled to the bias voltage circuitry; and
wherein the bias voltage circuitry is configured to provide the bias voltage depending on the supply voltage;
the amplifier comprising a first amplifier stage coupled in series with a second amplifier stage;
the bias voltage circuitry coupled to the second amplifier to provide the bias voltage thereto;
the supply voltage circuitry coupled to the first amplifier to provide the supply voltage thereto.
2. Amplification apparatus according to claim 1 ,
the amplifier comprising a third amplifier coupled in series with the first amplifier and the second amplifier.
3. Amplification apparatus according to claim 2 ,
wherein the third amplifier is a variable gain amplifier.
4. Amplification apparatus according to claim 1 ,
wherein the bias voltage circuitry is coupled to the first amplifier to provide a second bias voltage thereto.
5. Amplification apparatus comprising:
an amplifier;
a bias voltage circuit coupled to the amplifier to provide a bias voltage thereto;
a supply voltage circuitry coupled to the amplifier to provide a supply voltage thereto;
wherein the supply voltage circuitry is coupled to the bias voltage circuitry;
wherein the bias voltage circuitry is configured to provide the bias voltage depending on the supply voltage; and
a supply voltage control signal input coupled to supply voltage circuitry to feed a supply voltage control signal to the supply voltage circuitry.
6. Amplification apparatus according to claim 5 ,
wherein the supply voltage is derived from a global supply voltage in dependence of the supply voltage control signal.
7. Amplification apparatus comprising:
an amplifier;
a bias voltage circuitry coupled to the amplifier to provide a bias voltage thereto;
a supply voltage circuitry coupled to the amplifier to provide a supply voltage thereto;
wherein the supply voltage circuitry is coupled to the bias voltage circuitry;
wherein the bias voltage circuitry is configured to provide the bias voltage depending on the supply voltage; and
wherein the supply voltage circuitry comprises a linear regulator to provide a supply voltage derived from a constant supply voltage.
8. Amplification apparatus comprising:
an amplifier;
a bias voltage circuitry coupled to the amplifier to provide a bias voltage thereto;
a supply voltage circuitry coupled to the amplifier to provide a supply voltage thereto;
wherein the supply voltage circuitry is coupled to the bias voltage circuitry;
wherein the bias voltage circuitry is configured to provide the bias voltage depending on the supply voltage; and
wherein the bias voltage circuitry comprises a voltage controlled current source.
9. Amplification apparatus according to claim 8 ,
wherein the voltage controlled current source receives the supply voltage or a derivative thereof.
10. Amplification apparatus according to claim 8 ,
wherein the voltage controlled current source receives the supply voltage control signal.
11. Amplification apparatus according to claim 8 ,
wherein the voltage controlled current source comprises a feedback through a resistance.
12. Amplification apparatus according to claim 11 ,
wherein the resistance comprises a temperature depending element.
13. Amplification apparatus according to claim 11 ,
wherein the temperature depending element is a diode.
14. Transmission apparatus comprising:
a pre-amplifier stage, that receives an input signal and provides an output signal;
a power regulator connected to the pre-amplifier stage, that provides a power control signal to the pre-amplifier stage to regulate an output power of the output signal;
an output stage, that receives the output signal and provides a transmission signal;
a controller connected to the output stage, that provides an operation control signal to the output stage to control an operating point thereof;
wherein the controller is connected to the power regulator to receive the power control signal;
wherein the controller calculates the operation control signal as function of the power control signal;
a voltage gain amplifier that receives a radio frequency signal and provides the input signal;
wherein the voltage gain amplifier comprises a gain setting input to receive a gain setting signal; and
wherein the gain setting signal represents a ramping information of the transmission signal.
15. Transmission apparatus comprising:
a preamplifier stage, that receives an input signal and provides an output signal;
a power regulator connected to the preamplifier stage, that provides a power control signal to the preamplifier stage to regulate an output power of the output signal;
an output stage, that receives the output signal and provides a transmission signal;
a controller connected to the output stage, that provides an operation control signal to the output stage to control an operating point thereof;
wherein the controller is connected to the power regulator to receive the power control signal;
wherein the controller calculates the operation control signal as function of the power control signal; and
wherein the power regulator comprises a linear regulator receiving a second gain setting signal.
16. Transmission apparatus according to claim 15
wherein the second gains setting signal represents an amplitude information of the transmission signal.
17. Transmission apparatus according to claim 15
wherein the second gains setting signal represents a ramping information of the transmission signal.
18. Method for power adjustment of an amplifier having serial connection of a pre-amplifier stage and an output stage comprising:
providing a power signal;
setting a gain of the pre-amplifier stage in accordance to the power signal;
calculating an operation control signal in dependence of the power signal;
setting an operation point of the output stage in dependence to the operation control signal; and
setting a second operation point of the pre-amplifier stage in dependence to the operation control signal.