Wifi coverage is worse with panoramic wifi

Prior to installing the panoramic wifi I had the telephone modem/router in my network hub box that is located in my master bedroom closet.  Then I had a wireless router plugged into another data port in a more central location in the house.  Now that I had to plug the panoramic wifi router in the master bedroom closet I have worse wifi coverage than I had before.  Can I add another router at a different data port in my house and have it work with the panoramic router to increase my coverage?