Circuit with first and second terminals coupled together via a branch-interconnection arrangement

A circuit comprising:

• a common terminal;
• a first terminal;
• a second terminal;
• a first circuit branch, wherein the common terminal is coupled to the first circuit branch at a branch node and the first circuit branch terminates at the first terminal, and wherein the first circuit branch includes a first quarter wavelength transmission line having a first end coupled to the branch node and a second end coupled to the first terminal;
• a second circuit branch, wherein the common terminal is coupled to the second circuit branch at the branch node and the second circuit branch terminates at the second terminal, and wherein the second circuit branch includes a second quarter wavelength transmission line having a first end coupled to the branch node and a second end coupled to the second terminal;
• a branch-interconnection arrangement that includes a first resistor, wherein the first terminal and the second terminal are coupled together via the branch-interconnection arrangement;
• a first switched arrangement comprising a first switch having a first switch-terminal and a second switch-terminal, wherein the first switch-terminal is coupled to the common terminal, and wherein a second resistor and a first capacitor are arranged in parallel and coupled between the second switch-terminal and a reference terminal, the reference terminal configured to be coupled to a reference voltage;
• a second switched arrangement coupled directly to the first terminal, wherein the second switched arrangement comprises a second switch having a third switch-terminal and a fourth switch-terminal, wherein the third switch-terminal is coupled to the first terminal, and wherein a third resistor and a second capacitor are arranged in parallel and coupled between the fourth switch-terminal and the reference terminal, and wherein the first quarter wavelength transmission line is coupled between the first switched arrangement and the second switched arrangement;
• and
• a third switched arrangement comprising a third switch having a fifth switch-terminal and a sixth switch-terminal, wherein the fifth switch-terminal is connected to the second terminal, and wherein a fourth resistor and a third capacitor are arranged in parallel and coupled between the sixth switch-terminal and the reference terminal, and wherein the second quarter wavelength transmission line is coupled between the first switched arrangement and the third switched arrangement.

An analog beamformer circuit comprising:

• a common terminal;
• a first terminal, wherein the first terminal is configured to couple to a first antenna;
• a second terminal, wherein the second terminal is configured to couple to a second antenna;
• a first circuit branch, wherein the common terminal is coupled to the first circuit branch at a branch node and the first circuit branch terminates at the first terminal, and wherein the first circuit branch includes a first quarter wavelength transmission line having a first end electrically coupled to the branch node and a second end electrically coupled to the first terminal;
• a second circuit branch, wherein the common terminal is coupled to the second circuit branch at the branch node and the second circuit branch terminates at the second terminal, and wherein the second circuit branch includes a second quarter wavelength transmission line having a first end electrically coupled to the branch node and a second end electrically coupled to the second terminal;
• a branch-interconnection arrangement that includes a first resistor, wherein the first terminal and the second terminal are coupled together via the branch-interconnection arrangement;
• a first switched arrangement comprising a first switch having a first switch-terminal and a second switch-terminal, wherein the first switch-terminal is coupled to the common terminal, and wherein a second resistor and a first capacitor are arranged in parallel and coupled between the second switch-terminal and a reference terminal, the reference terminal configured to be coupled to a reference voltage;
• and
• a second switched arrangement comprising a second switch having a third switch-terminal and a fourth switch-terminal, wherein the third switch-terminal is coupled to the first terminal, and wherein a third resistor and a second capacitor are arranged in parallel and coupled between the fourth switch-terminal and the reference terminal, and wherein the first quarter wavelength transmission line is coupled between the first switched arrangement and the second switched arrangement.