Disclosed herein are various examples of architectures, circuits, devices and methods that provide wireless communication systems that can switch between switch combining and simplex operating modes. The switch combining modes utilize switching to dynamically route transmit and receive signals from a first antenna while the simplex operating modes route transmit signals to the first antenna and route receive signals from a second antenna. A controller is configured to control a duplexer to switch between the switch combining and the simplex operating modes.