Modular microwave power combiner
First Claim
1. A power combiner for microwave energy, comprising:
- a housing having at least one internal cavity disposed therein defined by a pair of facing end surfaces, said internal cavity being sized to resonate at a single frequency;
diode means situated within said housing for providing a source of microwave energy;
diode waveguide means positioned to extend radially within said housing, and having a coupling point situated axially adjacent one end surface defining said internal cavity, for electrically coupling said diode means to said internal cavity;
aperture means disposed through one of said end surfaces defining said internal cavity, near the periphery thereof, and situated in axial alignment with said coupling point of said radial waveguide means for forming an opening to said internal cavity through which microwave energy can propagate;
output means including an axially extending waveguide through one of said end surfaces defining said internal cavity for propagating microwave energy out of said power combiner; and
means including an axially extending waveguide through the other one of said end surfaces for reflecting microwave energy back into said cavity.
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Accused Products
Abstract
A modular microwave power combiner having a plurality of identical microwave diode amplifier circuits grouped in sets within the body of a modular unit which are electrically coupled in parallel to a central cavity sized to be resonant at a single frequency to minimize mismoding thereby enhancing combiner efficiency. A number of waveguides are provided for coupling of the microwave diode in each amplifier circuit to the resonant cavity, and the waveguides are situated on one side of a PC board at the top of each modular unit. Since each of the modular units is essentially identical in physical size and shape, the overall power output of the power combiner can be increased by merely adding additional modular units. The individual modular units are sized to fit top-to-bottom such that the respective resonant cavities are spaced apart by one-half wavelength (λ/2) for the parallel electrical coupling of all of the resonating cavities. Each modular unit further includes a water jacket around the diode mounts for conducting heat away from the microwave diode thereby increasing circuit density and decreasing overall housing size.
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Citations
22 Claims
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1. A power combiner for microwave energy, comprising:
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a housing having at least one internal cavity disposed therein defined by a pair of facing end surfaces, said internal cavity being sized to resonate at a single frequency; diode means situated within said housing for providing a source of microwave energy; diode waveguide means positioned to extend radially within said housing, and having a coupling point situated axially adjacent one end surface defining said internal cavity, for electrically coupling said diode means to said internal cavity; aperture means disposed through one of said end surfaces defining said internal cavity, near the periphery thereof, and situated in axial alignment with said coupling point of said radial waveguide means for forming an opening to said internal cavity through which microwave energy can propagate; output means including an axially extending waveguide through one of said end surfaces defining said internal cavity for propagating microwave energy out of said power combiner; and means including an axially extending waveguide through the other one of said end surfaces for reflecting microwave energy back into said cavity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A power combiner for microwave energy, comprising:
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a housing having at least two modlar units positioned in an axial adjacent configuration, each modular unit including an internal cavity sized to resonate at a single frequency; a plurality of diode means situated within each of said modular units for providing a source of microwave energy to said cylindrically shaped cavity; diode waveguide means positioned on each of said modular units for guiding microwave energy between each of said plurality of diode means and said cylindrically shaped internal cavity; cavity waveguide means positioned within said housing to extend axially between said internal cavities of axially adjacent modular units allowing microwave energy to propagate therebetween; output means positioned at one end of said housing and coupled to said internal cavity of the end modular unit for allowing the propagation microwave energy out of said power combiner; and means situated at the other end of said housing for reflecting /microwave energy back into said internal cavity of said end modular unit. - View Dependent Claims (18, 19, 20, 21, 22)
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Specification