CPC H04B 5/77 (2024.01) [H04B 5/72 (2024.01); H04B 5/79 (2024.01); H04W 52/0203 (2013.01); H04B 7/0413 (2013.01)] | 22 Claims |
1. A termination circuit for backscatter communication in an integrated wake-up receiver tag device, the termination circuit comprising:
a first branch comprising,
a first connection to an antenna;
a first switch between the first connection and an open load that is connected between the first switch and ground, wherein the first switch is controlled by a first phase of an intermediate frequency signal of the tag device; and
a second switch between the first connection and a shorted load that is connected between the second switch and ground, wherein the second switch is controlled by a second phase of the intermediate frequency signal of the tag device; and
a second branch comprising,
a second connection to the antenna;
a third switch between the second connection and a capacitive load that is connected between the third switch and ground, wherein the third switch is controlled by a third phase of the intermediate frequency signal of the tag device; and
a fourth switch between the second connection and an inductive load that is connected between the fourth switch and ground, wherein the fourth switch is controlled by a fourth phase of the intermediate frequency signal of the tag device.
|