Title:
TRACKER MODULE, POWER AMPLIFICATION MODULE, HIGH FREQUENCY MODULE, AND COMMUNICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/241233
Kind Code:
A1
Abstract:
The present invention makes it possible to realize both low-loss and good attenuation characteristics in each of a plurality of communication bands. A tracker module (1) comprises an external connection terminal (12), a tracker (3), and a variable low pass filter (4). The external connection terminal (12) is connected to a power amplifier. The tracker (3) supplies mains voltage to the power amplifier via the external connection terminal (12) by means of an envelope tracking method. The variable low pass filter (4) is provided on a path between the tracker (3) and the external connection terminal (12). In the variable low pass filter (4), a first block (5) comprises an least one electronic component. A second block (6) is a block for varying the cutoff frequency of the variable low pass filter (4). The second block (6) and the tracker (3) are made into one package. The first block (5) and the tracker (3) are provided separately from each other.
Inventors:
KOGURE TAKESHI
Application Number:
PCT/JP2021/018085
Publication Date:
December 02, 2021
Filing Date:
May 12, 2021
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H04B1/40; H03F1/02; H03F3/24
Domestic Patent References:
| WO2019065027A1 | 2019-04-04 |
Foreign References:
| JP2016201787A | 2016-12-01 | |||
| US20140266462A1 | 2014-09-18 | |||
| JP2011176529A | 2011-09-08 | |||
| JP2018182720A | 2018-11-15 |
Attorney, Agent or Firm:
HOKUTO PATENT ATTORNEYS OFFICE (JP)
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