Dual mode rotary microwave coupler

Claim 2

A microwave coupling device comprising: first and second rotatably mounted circular waveguide sections; first means responsive to first and second linearly polarized input signals for launching counterrotating circularly polarized signals in said first waveguide section, said first means including a pair of input ports formed in said first circular waveguide section with approximately a ninety degree interval about the circumference of the section therebetween, a pair of septums in said first circular waveguide section approximately orthogonally disposed to each other, and a differential phase shifter comprising at least one iris disposed within said first circular waveguide section; and second means including first and second output ports formed in said second circular waveguide section, for providing first and second linearly polarized output signals at said first and second output ports respectively, such that each said output signal has first and second linearly polarized signal components with the first signal component of each said output signal being derived from said first input signal and being substantially in phase quadrature with the other said first signal component, and the second signal component of each output signal being derived from said second input signal and being substantially in phase quadrature with the other said second signal component.

Claim 3

The device of claim 1 wherein the vectors representative of the transverse electric field of said linearly polarized input signals are designated cos omega 1t and cos omega 2t, wherein omega 1 and omega 2 are the radian frequencies of said first and second input signal respectively; said first means includes means for converting said input signals into signals of the form and said second means includes means for providing said first linearly polarized output signal in the form cos omega 1t + sin omega 2t and said second linearly polarized output signal in the form sin omega 1t + cos omega 2t.

Claim 4

The device of claim 1 wherein the output ports of said second means are separated by approximately a 90 degree interval about the circumference of said second circular waveguide section.

Claim 5

A microwave coupling device comprising: first and second rotatably mounted circular waveguide sections; first means responsive to first and second linearly polarized input signals for launching counterrotating circularly polarized signals in said first waveguide section, said first means including an orthogonal mode transducer having a pair of input ports formed in said first circular waveguide section; and a ninety degree hybrid junction having a pair of input ports adapted to be energized by said linearly polarized input signals, and having a pair of output ports coupled to said pair of input ports of said orthogonal mode transducer; and second means including first and second output ports formed in said second circular waveguide sections, for providing first and second linearly polarized output signals at said first and second output ports respecTively, such that each said output signal has first and second linearly polarized signal components with the first signal component of each said output signal being derived from said first input signal and being substantially in phase quadrature with the other said first signal component, and the second signal component of each output signal being derived from said second input signal and being substantially in phase quadrature with the other said second signal component.

Claim 6

A microwave coupling device comprising: first and second rotatably mounted circular waveguide sections; first means responsive to first and second linearly polarized input signals for launching counterrotating circularly polarized signals in said first waveguide section, said first means including an orthogonal mode transducer having a pair of input ports formed in said first circular waveguide section; and a ninety degree hybrid junction having a pair of input ports adapted to be energized by said linearly polarized input signals, and having a pair of output ports coupled to said pair of input ports of said orthogonal mode transducer; and second means including first and second output ports formed in said second circular waveguide sections, for providing first and second linearly polarized output signals at said first and second output ports respecTively, such that each said output signal has first and second linearly polarized signal components with the first signal component of each said output signal being derived from said first input signal and being substantially in phase quadrature with the other said first signal component, and the second signal component of each output signal being derived from said second input signal and being substantially in phase quadrature with the other said second signal component.

Claim 7

The device of claim 4 wherein the input ports of the orthogonal mode transducer are separated by approximately a ninety degree interval about the circumference of said first circular waveguide section.

Claim 8

The device of claim 5 further including a different pair of approximately orthogonally disposed septum plates in each said first and second circular waveguide sections.

Claim 9

The device of claim 4 wherein the output ports of said second means are separated by approximately a ninety degree interval about the circumference of said circular waveguide section.

Claim 10

A microwave coupling device comprising: first and second rotatably mounted circular waveguide sections; first means responsive to first and second linearly polarized input signals for launching counterrotating circularly polarized signals in said first waveguide section, said first means including an orthogonal mode transducer having substantially orthogonally disposed input ports formed in said first circular waveguide section; a magic tee junction having a pair of input ports and a pair of output ports; and means for coupling the output ports of said magic tee to the input ports of the orthogonal mode transducer of said first means so that the phase delay in one coupling path is approximately ninety degrees greater than in the other coupling path; and second means including first and second output ports formed in said second circular waveguide section, for providing first and second linearly polarized output signals at said first and second output ports respectively, such that each said output signal has first and second linearly polarized signal components with the first signal component of each said output signal being derived from said first input signal and being substantially in phase quadrature with the other said first signal component, and the second signal component of each output signal being derived from said second input signal and being substantially in phase quadrature with the other said second signal component.

Claim 11

A microwave coupling device comprising: first and second rotatably mounted circular waveguide sections; first means responsive to first and second linearly polarized input signals for launching counterrotating circularly polarized signals in said first waveguide section, said first means including an orthogonal mode transducer having substantially orthogonally disposed input ports formed in said first circular waveguide section; a magic tee junction having a pair of input ports and a pair of output ports; and means for coupling the output ports of said magic tee to the input ports of the orthogonal mode transducer of said first means so that the phase delay in one coupling path is approximately ninety degrees greater than in the other coupling path; and second means including first and second output ports formed in said second circular waveguide section, for providing first and second linearly polarized output signals at said first and second output ports respectively, such that each said output signal has first and second linearly polarized signal components with the first signal component of each said output signal being derived from said first input signal and being substantially in phase quadrature with the other said first signal component, and the second signal component of each output signal being derived from said second input signal and being substantially in phase quadrature with the other said second signal component.

Claim 12

The device of claim 8 wherein the output ports of said second means are separated by approximately a 90 degree interval about the circumference of said second circular waveguide section.

Claim 13

The device of claim 9 further including a different pair of approximately orthogonally disposed septum plates in each said first and second circular waveguide sections.