Low noise figure radiofrequency device
First Claim
1. A radiofrequency device adapted for coupling to an antenna comprising:
- a housing having a plurality of cavities and an input and output, the input being operatively coupled to the antenna, the output being operatively coupled to a base station;
a transmission path disposed within the housing and including a plurality of transmit resonators;
a receive path disposed within the housing, the receive path including a plurality of filter sections, each filter section including a plurality of receive resonators;
a low noise amplifier operatively coupled via an input to a last resonator in one of the plurality of filter sections, the low noise amplifier being operatively coupled via an output to the input of another of the plurality of filter sections; and
wherein the radiofrequency device has a noise figure of less than 1.2 dB at the center band.
1 Assignment
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Accused Products
Abstract
A RF device such as a tower mounted amplifier (TMA), mast-head amplifier (MHA), or Tower Mounted Boosters (TMB) includes a housing having a plurality of cavities and an input and an output, the input being coupled to the antenna and the output being coupled to a base station. The housing includes a transmission path holding multiple coaxial resonators. The housing further includes multiple receive paths including at least one path having a plurality of cavities, each cavity containing a dielectric resonator. The metallic transmit resonator nearest the antenna input is coupled to the first dielectric resonator via a common resonant wire. The last dielectric resonator in the receive path is coupled to a first metallic resonator of a downstream clean-up filter via another common resonant wire.
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Citations
38 Claims
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1. A radiofrequency device adapted for coupling to an antenna comprising:
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a housing having a plurality of cavities and an input and output, the input being operatively coupled to the antenna, the output being operatively coupled to a base station; a transmission path disposed within the housing and including a plurality of transmit resonators; a receive path disposed within the housing, the receive path including a plurality of filter sections, each filter section including a plurality of receive resonators; a low noise amplifier operatively coupled via an input to a last resonator in one of the plurality of filter sections, the low noise amplifier being operatively coupled via an output to the input of another of the plurality of filter sections; and wherein the radiofrequency device has a noise figure of less than 1.2 dB at the center band. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A radiofrequency device adapted for coupling to an antenna comprising:
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a housing having a plurality of cavities and an input and output, the input being operatively coupled to the antenna, the output being operatively coupled to a base station; a transmission path disposed within the housing and including a plurality of transmit resonators; a pre-LNA filter section disposed within the housing, the pre-LNA filter section including a receive filter having a plurality of cavities, each cavity holding a dielectric resonator, the pre-LNA filter section further comprising a clean-up filter, the clean-up filter including at least one cavity disposed within the housing, the at least one cavity containing one or more coaxial resonators; a low noise amplifier operatively coupled to a last coaxial resonator in the clean-up filter, the low noise amplifier being operatively coupled to the input of a post-LNA receive filter; and wherein the radiofrequency device has a noise figure of less than 1.2 dB at the center band. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A radiofrequency device adapted for coupling to an antenna comprising:
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a housing having an input and output, the input being operatively coupled to the antenna, the output being operatively coupled to a base station; a transmission path within the housing including a plurality of transmit resonators; a first receive filter disposed within the housing and including a plurality of cavities, each cavity holding a dielectric resonator, wherein a transmit resonator located closest to the input is coupled to a first dielectric resonator using a conductor connected to the transmit resonator and terminating adjacent to the first dielectric resonator; a second receive filter disposed in the housing, wherein a last dielectric resonator in the first receive filter is coupled to a first receive resonator in the second receive filter via a conductor connected to the first receive resonator of the second receive filter and terminating adjacent to the last dielectric resonator; and a low noise amplifier operatively coupled to a last resonator in the second receive filter, the low noise amplifier being operatively coupled to the input of a third receive filter. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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Specification