Low noise block down converter with a plurality of local oscillators
First Claim
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1. A low noise block down converter, comprising:
- a plurality of local oscillators each including a dielectric resonator and having an oscillation frequency different from each other; and
a metal shielding box accommodating said plurality of local oscillators,whereinsaid metal shielding box includes only one shielding chamber accommodating said plurality of local oscillators andan electromagnetic coupling preventing member preventing electromagnetic coupling between one and another one of said dielectric resonators;
said electromagnetic coupling preventing member extending between any two of said dielectric resonators and receiving a reference potential.
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Abstract
A low noise block down converter accommodates two local oscillators within one shielding chamber in a metal shielding box and has a conductive bar provided between two dielectric resonators included in the local oscillators respectively. The conductive bar prevents electromagnetic coupling between the two dielectric resonators. Therefore, the device dimension can be made small compared to the conventional case in which two local oscillators are completely separated from each other by a metal wall.
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4 Claims
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1. A low noise block down converter, comprising:
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a plurality of local oscillators each including a dielectric resonator and having an oscillation frequency different from each other; and a metal shielding box accommodating said plurality of local oscillators, wherein said metal shielding box includes only one shielding chamber accommodating said plurality of local oscillators and an electromagnetic coupling preventing member preventing electromagnetic coupling between one and another one of said dielectric resonators; said electromagnetic coupling preventing member extending between any two of said dielectric resonators and receiving a reference potential. - View Dependent Claims (2, 3, 4)
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Specification