Amplifier circuits
View Patent ↗Radio Frequency (RF) amplifier circuits are disclosed which may exhibit improved video/instantaneous bandwidth performance compared to conventional circuits. For example, disclosed RF amplifier circuits may employ a baseband decoupling network connected in parallel with a low-pass RF matching network of the amplifier circuit.
1. A radio frequency (RF) amplifier circuit comprising:
a packaged amplifier circuit having a transistor connected to an output of the packaged amplifier circuit, the packaged amplifier circuit further comprising, between the transistor and the output:
a low-pass RF matching network comprising an un-shunted RF matching capacitance connected to ground; and
a baseband decoupling network connected in parallel with the low-pass RF matching network, the baseband decoupling network comprising a series arrangement comprising a decoupling capacitor and an inductance connected in series between a drain of the transistor and ground, wherein the baseband decoupling network is provided inside the package and the output of the packaged amplifier circuit is configured to be connected to a low pass matching network via an inductive connection.
2. The RF amplifier circuit of claim 1 , wherein the inductance comprises a pair of inductors connected in series.
3. The RF amplifier circuit of claim 1 , wherein the inductive connection comprises at least one wire bond.
4. The RF amplifier circuit of claim 1 , wherein the RF matching capacitance is connected to a low pass matching network via an inductive connection.
5. The RF amplifier circuit of claim 4 , wherein the inductive connection comprises at least one wire bond.
6. An integrated circuit comprising the RF amplifier circuit according to claim 1 .
7. A mobile base station comprising the RF amplifier circuit according to claim 1 .