Patent ID: 9030369
Filing Date: 2015-05-12
Classification: H01P,Y10T

Abstract:
1. An apparatus comprising: a first hybrid coupler having a first port, a second port, a third port, and a fourth port, wherein the fourth port of the first hybrid coupler is a first isolation port, and wherein the first port of the first hybrid coupler is configured to carry a first portion of a differential signal, and wherein the first hybrid coupler is substantially curvilinear; and a second hybrid coupler having a first port, a second port, a third port, and a fourth port, wherein the fourth port of the second hybrid coupler is a second isolation port, and wherein the first port of the second hybrid coupler is configured to carry a second portion of the differential signal, and wherein the second hybrid coupler is substantially curvilinear, and wherein the first and second isolation ports are mutually coupled; a third hybrid coupler having a first port, a second port, a third port, and a fourth port, wherein the fourth port of the third hybrid coupler is a third isolation port, and wherein the first port of the third hybrid coupler is configured to carry the first portion of the differential signal, and wherein the third hybrid coupler is substantially curvilinear; and a fourth hybrid coupler having a first port, a second port, a third port, and a fourth port, wherein the fourth port of the fourth hybrid coupler is a fourth isolation port, and wherein the first port of the fourth hybrid coupler is configured to carry the second portion of the differential signal, and wherein the fourth hybrid coupler is substantially curvilinear, and wherein the third and fourth isolation ports are mutually coupled.