Structure of reception frequency converting portion in a multi-band microwave detector
First Claim
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1. A structure of a reception frequency converting portion of a multi-band microwave detector, and including a microwave circuit comprising:
- a horn antenna;
two-port cavity integrally formed with said horn antenna and having one port communicated with a throat portion of said horn antenna;
one-port cavity integrally formed with said two-port cavity and communicated with the other port of said two-port cavity;
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a mixer diode located at said throat portion of said horn antenna;
a first local oscillator provided within said two-port cavity; and
a second local oscillator provided within said one-port cavity.
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Abstract
A structure of a reception frequency converting portion of a multi-band microwave detector, and including a microwave circuit comprises a horn antenna, two-port cavity integrally formed with the horn antenna and having one port communicated with a throat portion of the horn antenna, one-port cavity integrally formed with the two-port cavity and communicated with the other port of the two-port cavity, a mixer diode located at the throat portion of the horn antenna, a first local oscillator arranged within the two-port cavity, and a second local oscillator arranged within the one-port cavity.
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Citations
7 Claims
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1. A structure of a reception frequency converting portion of a multi-band microwave detector, and including a microwave circuit comprising:
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a horn antenna; two-port cavity integrally formed with said horn antenna and having one port communicated with a throat portion of said horn antenna; one-port cavity integrally formed with said two-port cavity and communicated with the other port of said two-port cavity;
;a mixer diode located at said throat portion of said horn antenna; a first local oscillator provided within said two-port cavity; and a second local oscillator provided within said one-port cavity.
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2. A multi-band microwave detector comprising:
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a main body defining a horn antenna, a first cavity communicated with said horn antenna through a throat portion, and a second cavity communicated with said first cavity; a microwave circuit including a mixing means located in said throat portion, a first local oscillator located within said first cavity and a second local oscillator located within said second cavity, said first and second local oscillators being operated in time sharing basis. - View Dependent Claims (3, 4, 5, 6, 7)
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Specification