Multi-function communication device with millimeter-wave range operation

A communication device, comprising:

• an input port;
• a first output port;
• a second output port;
• a first output arm comprising one end connected to the first output port and another end connected to a branch point and comprising a first switching element configured to be shorted in a second mode;
• a second output arm comprising one end connected to the second output port and another end connected to the branch point and comprising a second switching element configured to be shorted in a first mode;
• and
• an input arm comprising one end connected to the input port and another end connected to the branch point and comprising a third switching element configured to introduce a discontinuity into a transmission line in the form of a matching circuit configured to change an impedance of the input arm in a divider mode,
• wherein in the first mode, all power is transmitted to the first output port,
• wherein in the second mode, all power is transmitted to the second output port, and
• wherein in the divider mode, all power is transmitted to the first output port and the second output port.

A communication device, comprising:

• an input port;
• N output ports;
• N output arms;
• and
• an input arm comprising one end connected to the input port and another end, connected to a branch point and comprising a third switching element configured to introduce a discontinuity into a transmission line in the form of a matching element or matching circuit configured to change an impedance of the input arm in a divider mode,
• wherein each of the N output arms is connected at one end to a corresponding output port and at another end to the branch point and comprises a first switching element configured to change an impedance of a corresponding output arm, and
• wherein N is a positive integer greater than or equal to 3.

A communication device, comprising:

• an input port;
• a first output port;
• a second output port;
• a first output arm comprising one end connected to the first output port and another end connected to a branch point and comprising a first switching element configured to change an impedance of the first output arm;
• a second output arm comprising one end connected to the second output port and another end connected to the branch point and comprising a second switching element configured to change an impedance of the second output arm;
• and
• an input arm comprising ends connected to the input port and another end connected to the branch point and comprising a third switching element configured to change an impedance of the input arm,
• wherein each of the first switching element and the second switching element is configured to be shorted to the ground to change an impedance of the corresponding output arm in a mode of transmitting an entire power to another output arm,
• wherein the third switching element is configured to introduce a discontinuity into a transmission line in the form of a matching element or matching circuit to change an impedance of the input arm in a divider mode, and
• wherein the matching element or matching circuit has a purely reactive resistance that is opposite in sign and equal in magnitude to a reactive resistance caused by a mismatch of the first output arm and the second output arm in the divider mode.