Radio frequency power amplifier implementing a gain equalizer and a process of implementing the same
View Patent ↗An amplifier includes an input impedance matching network; at least one transistor; and a gain equalizer configured to equalize gain. The gain equalizer is connected to components of the input impedance matching network.
1 . An amplifier comprising:
an input impedance matching network comprising at least one impedance matching component;
at least one transistor;
an input lead coupled to the at least one transistor;
an output lead coupled to the at least one transistor; and
a gain equalizer configured to equalize gain and the gain equalizer comprising at least one equalizer component,
wherein the at least one equalizer component of the gain equalizer is connected in series or parallel with the at least one impedance matching component of the input impedance matching network.
2 . The amplifier according to claim 1 wherein:
the gain equalizer and the input impedance matching network are configured as an equalizing input matching circuit; and
the equalizing input matching circuit comprises the at least one equalizer component of the gain equalizer to equalize the gain and the input impedance matching network being configured to maintain an input impedance.
3 . The amplifier according to claim 1 wherein the at least one equalizer component of the gain equalizer is connected in series and/or parallel to the at least one impedance matching component of the input impedance matching network; and wherein the at least one impedance matching component comprises an inductor and/or a capacitor.
4 . The amplifier according to claim 1 wherein the at least one equalizer component of the gain equalizer is connected in parallel to the at least one impedance matching component of the input impedance matching network; and wherein the at least one impedance matching component comprises an inductor and/or a capacitor.
5 . The amplifier according to claim 1 wherein one or more equalizer components of the gain equalizer are cascaded to one or more impedance matching components of the input impedance matching network.
6 . The amplifier according to claim 1 wherein:
one or more equalizer components of the gain equalizer are cascaded to one or more impedance matching components of the input impedance matching network; and
one or more equalizer components of the gain equalizer are cascaded to one or more impedance matching components of the input impedance matching network.
7 . The amplifier according to claim 6 wherein the one or more equalizer components of the gain equalizer comprise at least one resistor in series and/or parallel with the at least one impedance matching component.
8 . The amplifier according to claim 7 wherein the at least one resistor has a resistance of 0.1 ohm-5 ohm.
9 . The amplifier according to claim 1 wherein the gain equalizer is configured to reduce a variation of gain to a range of 1.0 dB-4.0 dB.
10 . The amplifier according to claim 1 wherein the gain equalizer is configured to reduce a variation of gain at least 20%.
11 . The amplifier according to claim 1 further comprising a housing,
wherein the gain equalizer and the input impedance matching network are arranged in the housing.
12 . The amplifier according to claim 1 further comprising a support,
wherein the gain equalizer and the input impedance matching network are arranged on the support.
13 . The amplifier according to claim 1 wherein the at least one transistor comprises a GaN based transistor.
14 . The amplifier according to claim 1 wherein the at least one transistor comprises a LDMOS based transistor.
15 . The amplifier according to claim 1 wherein:
the at least one transistor comprises a transistor implemented as a carrier amplifier; and
the at least one transistor comprises a transistor implemented as a peaking amplifier.
16 . The amplifier according to claim 1 wherein the at least one transistor comprises a plurality transistors configured in a Doherty configuration.
17 . The amplifier according to claim 1 wherein the at least one transistor comprises a plurality of transistors configured in a multistage configuration.
18 . A process of implementing an amplifier comprising:
providing an input impedance matching network comprising at least one impedance matching component;
providing at least one transistor;
providing a gain equalizer configured to equalize gain and the gain equalizer comprising at least one equalizer component;
coupling an input lead to the at least one transistor;
coupling an output lead to the at least one transistor; and
coupling the at least one equalizer component of the gain equalizer in series or parallel with the at least one impedance matching component of the input impedance matching network.
19 . The process of implementing an amplifier according to claim 18 further comprising configuring the gain equalizer and the input impedance matching network as an equalizing input matching circuit,
wherein the equalizing input matching circuit comprises the at least one equalizer component of the gain equalizer to equalize the gain and the input impedance matching network being configured to maintain an input impedance.
20 . The process of implementing an amplifier according to claim 18 further comprising connecting the at least one equalizer component of the gain equalizer in series and/or parallel with the at least one impedance matching component of the input impedance matching network.
21 . The process of implementing an amplifier according to claim 20 further comprising connecting the at least one equalizer component of the gain equalizer in series and/or parallel to the at least one impedance matching component of the input impedance matching network, wherein the at least one impedance matching component comprises an inductor and/or a capacitor.
22 . The process of implementing an amplifier according to claim 20 wherein the gain equalizer is configured to reduce a variation of gain to a range of 1.0 dB-4.0 dB.
23 . The process of implementing an amplifier according to claim 20 wherein the gain equalizer is configured to reduce a variation of gain at least 20%.
24 . The process of implementing an amplifier according to claim 18 further comprising connecting the at least one equalizer component of the gain equalizer in parallel to the at least one impedance matching component of the input impedance matching network, wherein the at least one impedance matching component comprises an inductor and/or a capacitor.
25 . The process of implementing an amplifier according to claim 18 further comprising:
connecting the at least one equalizer component of the gain equalizer in series and/or parallel to one or more impedance matching components of the input impedance matching network, wherein the at least one impedance matching component comprises an inductor and/or a capacitor.
26 . The process of implementing an amplifier according to claim 25 wherein the at least one equalizer component of the gain equalizer comprise at least one resistor.
27 . The process of implementing an amplifier according to claim 26 wherein the at least one resistor has a resistance of 0.1 ohm-5 ohm.
28 . The process of implementing an amplifier according to claim 18 further comprising:
providing a housing; and
arranging the gain equalizer and the input impedance matching network in the housing.
29 . The process of implementing an amplifier according to claim 18 further comprising:
providing a support; and
arranging the gain equalizer and the input impedance matching network on the support.
30 . The process of implementing an amplifier according to claim 18 wherein the at least one transistor comprises a GaN based transistor.
31 . The process of implementing an amplifier according to claim 18 wherein the at least one transistor comprises a LDMOS based transistor.
32 . The process of implementing an amplifier according to claim 18 wherein:
the at least one transistor comprises a transistor implemented as a carrier amplifier; and
the at least one transistor comprises a transistor implemented as a peaking amplifier.