Tracker module, power amplifier module, radio frequency module, and communication device

Patent metadata

Field	Value
Publication number	US-12126308-B2
Application number	US-202218055957-A
Country	US
Kind code	B2
Filing date	Nov 16, 2022
Priority date	May 25, 2020
Publication date	Oct 22, 2024
Grant date	Oct 22, 2024

Abstract

A tracker module is provided that includes a second substrate that is separate from a first substrate, a tracker component, and a low pass filter. A power amplifier is disposed on or in the first substrate. Moreover, the tracker component supplies a power supply voltage to the power amplifier. The low pass filter is disposed on a path between an output terminal of the tracker component and the power amplifier. The tracker component and the low pass filter are disposed on or in the second substrate.

First claim

What is claimed:

1. A tracker module comprising:
a first substrate that is separate from a second substrate on or in-which a power amplifier is disposed, the first substrate having a first main surface and a second main surfaces that are opposite to each other;
a tracker component configured to supply a power supply voltage to the power amplifier; and
a low pass filter disposed between an output terminal of the tracker component and the power amplifier,
wherein the tracker component and the low pass filter are disposed on the first main surface of the first substrate,
wherein the first substrate has a power amplifier connection terminal configured to connect to the power amplifier and that is disposed on the second main surface of the first substrate and that overlaps the low pass filter in a plan view in a thickness direction of the first substrate.

2. The tracker module according to claim 1 , wherein the tracker component and the low pass filter are integrated together into a single package.

3. The tracker module according to claim 1 , wherein the low pass filter is disposed on the first substrate and adjacent to the tracker component.

4. The tracker module according to claim 3 , wherein:
the low pass filter includes a plurality of electronic components, and
at least one of the plurality of electronic components is disposed adjacent to the tracker component.

5. The tracker module according to claim 1 , wherein the low pass filter comprises a single chip.

6. A power amplifier module comprising:
the tracker module according to claim 1 ; and
the power amplifier.

7. The power amplifier module according to claim 6 , further comprising:
a control circuit configured to control the power amplifier,
wherein the power amplifier includes:
an amplifier element,
a plurality of bias circuits configured to supply a bias current for the amplifier element, and
a switch configured to switch between the plurality of bias circuits.

8. The power amplifier module according to claim 7 , wherein the control circuit is configured to control the switch in response to a digital signal that is configured to control the bias current for the amplifier element.

9. The power amplifier module according to claim 8 , wherein the digital signal is generated based on an envelope signal.

10. The tracker module according to claim 1 ,
wherein a first path length of a path between the tracker component and the low pass filter is shorter than a second path length of a path between the low pass filter and the power amplifier.

11. The tracker module according to claim 10 , wherein the tracker component and the low pass filter are integrated together into a single package.

12. The tracker module according to claim 10 , wherein:
the low pass filter is disposed in a substrate and includes a plurality of electronic components, and
at least one of the plurality of electronic components is disposed in the substrate and adjacent to the tracker component.

13. A radio frequency module comprising:
a tracker module comprising:
a first substrate that is separate from a second substrate on which a power amplifier is disposed, the first substrate having a first main surface and a second main surfaces that are opposite to each other;
a tracker component configured to supply a power supply voltage to the power amplifier; and
a low pass filter disposed between an output terminal of the tracker component and the power amplifier,
wherein the tracker component and the low pass filter are disposed on the first main surface of the first substrate;

a transmission filter configured to allow a radio frequency signal amplified by the power amplifier to pass therethrough;
a control circuit configured to control the power amplifier;
a first terminal configured to receive a serial data signal that is based on a serial data transmission standard; and
a second terminal configured to receive a digital signal different from the serial data signal.

14. The radio frequency module according to claim 13 , wherein the control circuit is configured to perform control in response to the digital signal received from the second terminal.

15. The radio frequency module according to claim 13 , wherein the second terminal comprises a plurality of second terminals that are adjacent to each other.

16. The radio frequency module according to claim 13 , further comprising:
at least two signal terminals through which the radio frequency signal passes,
wherein the second terminal is located between the two signal terminals.

17. A communication device comprising:
the radio frequency module according to claim 13 ; and
a signal processing circuit configured to output a radio frequency signal to the radio frequency module.

Assignees

• Murata Manufacturing Co

Inventors

• Kogure Takeshi
• Aramata Tomohide

Classifications

• H03F3/24

  of transmitter output stages · CPC title

• H04B1/0475

  with means for limiting noise, interference or distortion (H04B1/0483 takes precedence) · CPC title

• H04B1/03

  Constructional details, e.g. casings, housings · CPC title

• H03F3/68

  Combinations of amplifiers, e.g. multi-channel amplifiers for stereophonics {(power amplifiers using a combination of several semiconductor amplifiers H03F3/211; combinations of amplifiers using coupling networks with distributed constants H03F3/602)} · CPC title

• H03F2200/417

  A switch coupled in the output circuit of an amplifier being controlled by a circuit · CPC title