Switch topology for switching filters multiplexers
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United States of America Patent
Stats
-
May 15, 2018
Issued Date -
N/A
app pub date -
Jan 29, 2016
filing date -
Jun 30, 2015
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
This disclosure relates to radio frequency (RF) front end circuitry used to route RF signals. In one embodiment, the RF front end circuitry has a filter circuit and a switch device. The switch device includes a common port, an RF port, and switchable path connected in series between the common port and the RF port. The switch device is configured to present approximately the filter capacitance of the filter circuit at the common port when the switchable path is closed. However, when the switchable path is open, the switch device is configured to present a device capacitance at the common port that is approximately equal to the filter capacitance of the filter circuit. In this manner, if the common port is connected to an antenna, the capacitance seen by the antenna from the common port remains substantially unchanged regardless of which of the switchable path is opened or closed.
First Claim
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International Classification(s)
- 2016 Application Filing Year
- H01P Class
- 694 Applications Filed
- 597 Patents Issued To-Date
- 86.03 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- H01P Class
- 0 % this patent is cited more than
- 7 Age
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