Patent ID: 9608688
Date: 2017-03-28
CPC Classifications: H04B,H04L

Claim:
1. An apparatus comprising: a first hybrid RF coupler having a first main port, a first in-phase port, a first quadrature-phase port, and a first isolation port, which is coupled to a primary RF antenna, wherein the first hybrid RF coupler is configured to receive an RF transmit signal via the first main port to provide an RF antenna transmit signal via the first isolation port; a second hybrid RF coupler having a second main port, a second in-phase port, a second quadrature-phase port, and a second isolation port; a first RF filter coupled between the first in-phase port and the second in-phase port; and a second RF filter coupled between the first quadrature-phase port and the second quadrature-phase port, wherein the first hybrid RF coupler, the second hybrid RF coupler, the first RF filter, and the second RF filter form a first RF diplexer, wherein: