Methods, systems and devices for wireless devices having multiple wireless modules

For use in a device using time-division-multiple access and multiple wireless modules, a method comprising:

• generating a signal indicative of a first wireless module being active;
• in a first state that is responsive to the signal indicating the first wireless module is active, connecting a transmitter of a second wireless module to a duplexer;
• in a second state that is responsive to the signal indicating the first wireless module is not active, connecting the transmitter of the second wireless module to an antenna while bypassing the duplexer;
• connecting, in the first state, the duplexer to the antenna and connecting, in the second state, the transmitter to the antenna while bypassing the duplexer;
• wherein, the duplexer connects a receiver of the second wireless module to the antenna and includes a transmit band pass filter configured and arranged with a rejection band near an operating band of a receiver of the first wireless module.

A system for using time-division-multiple access communications, the system comprising:

• a first wireless module having a receiver that receives data at a first frequency band and a transmitter that sends data at a second frequency band;
• a second wireless module having a receiver that receives data operating at a third frequency band:
• an antenna;
• a duplexer having a transmit band pass filter designed with a rejection band near the third frequency band;
• a first switch that, in a first state setting, routes the data from the transmitter of the first wireless module through the duplexer and that, in a second state setting, routes the data from the transmitter by bypassing the duplexer;
• and
• a second switch that, in the first state, routes the data from the transmitter to the antenna through the duplexer and, in the second state, routes data from the first switch to the antenna while bypassing the duplexer;
• wherein the first switch is configured and arranged to operate in the first and the second states in response to a signal indicative of the second wireless module receiving data.