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 receive resonators;
a low noise amplifier operatively coupled via an input to a last resonator in one of the plurality of receive filter sections, the low noise amplifier being operatively coupled via an output to the input of another of the plurality of receive filter sections;
a bypass function to allow the received RF signals to bypass the amplifier; and
wherein the radiofrequency device has a noise figure, when not in bypass, of less than 1.2 dB at the center band.
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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
33 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 receive resonators; a low noise amplifier operatively coupled via an input to a last resonator in one of the plurality of receive filter sections, the low noise amplifier being operatively coupled via an output to the input of another of the plurality of receive filter sections; a bypass function to allow the received RF signals to bypass the amplifier; and wherein the radiofrequency device has a noise figure, when not in bypass, of less than 1.2 dB at the center band. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. 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 receive resonators; a low noise amplifier operatively coupled via an input to a last resonator in one of the plurality of receive filter sections, the low noise amplifier being operatively coupled via an output to the input of another of the plurality of receive filter sections; wherein the radiofrequency device has a noise figure of less than 1.2 dB at the center band, and the size of the device is less than 220 cubic inches for each antenna element-base station path, excluding connectors and mounting apparatus. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. 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 plurality of transmission paths disposed within the housing and including a plurality of transmit resonators; a plurality of receive paths disposed within the housing and including a plurality of receive resonators; one or more low noise amplifiers each operatively coupled via an input to a last resonator in a pre-LNA receive filter section, the low noise amplifier being operatively coupled via an output to the input of a post-LNA receive filter section; wherein at least one of the receive paths of the radiofrequency device has a noise figure of less than 1.2 dB at the center band. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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Specification