Electrical circuit and component with said circuit
View Patent ↗An electrical circuit that includes an electric four-terminal network is disclosed. The electric four-terminal network includes a first electrical port with a first terminal and a second terminal and a second electrical port with a first terminal and a second terminal. The electrical circuit also includes a first shunt branch between the second terminal of first electrical port and ground.
1. An electrical circuit comprising:
an electric four-terminal network that includes a first electrical port with a first terminal and a second terminal and a second electrical port with a first terminal and a second terminal;
a first shunt branch between the second terminal of the first electrical port and ground; and
a first switching element in the first shunt branch;
wherein the electric four-terminal network comprises resonators configured to operate with bulk acoustic waves.
2. The electrical circuit of claim 1 , further comprising a second shunt branch between the second terminal of the second electrical port and ground; and
a second switching element in the second shunt branch.
3. The electrical circuit of claim 1 , further comprising a resonator unit comprising a first resonator and a second resonator acoustically coupled and electrically isolated from each other.
4. The electrical circuit of claim 3 , wherein the first resonator is in a first signal path and the second resonator is in a second signal path, the first signal path being separate from the second signal path.
5. The electrical circuit of claim 3 , wherein:
the first resonator between the first and second terminals of the first port; and
the second resonator is between the first and second terminals of the second port.
6. The electrical circuit of claim 3 , further comprising a partially acoustically transmissive coupling layer between the first and second resonators;
wherein the first and second resonators are acoustically coupled to one another via the partially acoustically transmissive coupling layer.
7. The electrical circuit of claim 3 , further comprising a lateral acoustic coupling layer, wherein:
the first and second resonators are side-by-side; and
the first and second resonators are acoustically coupled via the lateral acoustic coupling layer.
8. An electrical circuit comprising:
an electric four-terminal network that includes a first electrical port with a first terminal and a second terminal and a second electrical port with a first terminal and a second terminal;
a first shunt branch between the second terminal of the first electrical port and ground;
a second shunt branch between the second terminal of the second electrical port and ground;
a first switching element in the first shunt branch; and
a second switching element in the second shunt branch;
wherein the electric four-terminal network comprises first and second transducers configured to operate with surface acoustic waves.
9. The electrical circuit of claim 8 , wherein:
the first transducer is acoustically coupled to the second transducer; and
the first transducer is electrically isolated from the second transducer.
10. The electrical circuit of claim 9 , wherein:
the first transducer is in a first signal path; and
the second transducer is in a second signal path, the second signal path being separate from the first signal path.
11. The electrical circuit of claim 10 , wherein:
the first transducer is between the first and second terminals of the first port; and
the second transducer is between the first and second terminals of the second port.
12. The electrical circuit of claim 9 , wherein the first and second transducers are arranged in an acoustic track side by side.