High linearity antenna swapping circuitry
First Claim
1. Radio frequency (RF) front end circuitry comprising:
- transceiver switching circuitry;
antenna swapping circuitry comprising;
a first pole and a second pole;
a first throw and a second throw; and
a first switching element coupled between the first pole and the first throw, a second switching element coupled between the first pole and the second throw, a third switching element coupled between the second pole and the first throw, and a fourth switching element coupled between the second pole and the second throw; and
multiplexer circuitry coupled between the transceiver switching circuitry and the antenna swapping circuitry; and
switch control circuitry coupled to the transceiver switching circuitry and the antenna swapping circuitry and configured to;
in a first low-band transmit mode, provide a primary low-band transmit signal at the first pole of the antenna swapping circuitry via the transceiver switching circuitry and forward the primary low-band transmit signal to the first throw via the first switching element in the antenna swapping circuitry; and
in a second low-band transmit mode, provide a primary low-band transmit signal at the second pole of the antenna swapping circuitry via the transceiver switching circuitry and forward the primary low-band transmit signal to the second throw via the fourth switching element in the antenna swapping circuitry.
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Accused Products
Abstract
Antenna swapping circuitry includes a first pole, a second pole, a first throw, a second throw, and a number of switching elements. A first switching element is coupled between the first pole and the first throw. A second switching element is coupled between the first pole and the second throw. A third switching element is coupled between the second pole and the first throw. A fourth switching element is coupled between the second pole and the second throw. A linearity of the first switching element and the fourth switching element is higher in a closed state of operation than in an open state of operation. A linearity of the second switching element and a third switching element is higher in an open state of operation than in a closed state of operation.
5 Citations
14 Claims
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1. Radio frequency (RF) front end circuitry comprising:
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transceiver switching circuitry; antenna swapping circuitry comprising; a first pole and a second pole; a first throw and a second throw; and a first switching element coupled between the first pole and the first throw, a second switching element coupled between the first pole and the second throw, a third switching element coupled between the second pole and the first throw, and a fourth switching element coupled between the second pole and the second throw; and multiplexer circuitry coupled between the transceiver switching circuitry and the antenna swapping circuitry; and switch control circuitry coupled to the transceiver switching circuitry and the antenna swapping circuitry and configured to; in a first low-band transmit mode, provide a primary low-band transmit signal at the first pole of the antenna swapping circuitry via the transceiver switching circuitry and forward the primary low-band transmit signal to the first throw via the first switching element in the antenna swapping circuitry; and in a second low-band transmit mode, provide a primary low-band transmit signal at the second pole of the antenna swapping circuitry via the transceiver switching circuitry and forward the primary low-band transmit signal to the second throw via the fourth switching element in the antenna swapping circuitry. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification