1. A planetary gear unit in an electrically operated brake for reducing the rotational speed from a drive shaft of an electric motor to an outgoing rotating means, which transmits a brake applying rotational movement to the brake, comprising
a first planet wheel between a sun wheel gearing on an ingoing first shaft and a first internal gearing in a housing of the unit,
a crank arm, on which the first planet wheel is rotationally arranged and which is rigidly connected to a second shaft coaxial with the first shaft,
at least one second planet wheel between a second sun wheel gearing on the second shaft and a second internal gearing in the housing of the unit, and
an outgoing gear, which is coaxial with the first and second shafts and to which the at least one second planet wheel is rotatably connected, characterized in that the first and second shafts are journalled in relation to each other by means of a radial bearing and in that the outgoing gear is journalled on the second shaft by means of radial bearings.
2. A unit according to claim 1, characterized in that the first planet wheel is rotationally arranged on a pin on the crank arm over a bearing.
3. A unit according to claim 1, characterized in that three second planet wheels are equidistantly distributed between the second sun wheel gearing and the second internal gearing.
4. A unit according to claim 1, characterized in that the outgoing gear is provided with at least one pin for the second planet wheel.
5. A unit according to claim 4, characterized in that the pin comprises a screw and a sleeve and that the second planet wheel is journalled on the sleeve by means of a bearing.
6. A unit according to claim 1, characterized in that the dimensioning of the different members in the gear unit is such that the rotational speed reduction in each of the two stages of the unit is in the order of 1:4-1:6, the first stage comprising the first shaft, the first planet wheel, and the crank arm, and the second stage comprising the second shaft, the second planet wheels, and the outgoing gear.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A mobile wireless communications device comprising:
an antenna;
a plurality of Long Term Evolution (LTE) radio frequency (RF) differential inputs; and
a front end circuit comprising
a plurality of band pass filters coupled to said antenna,
a plurality of LNAs coupled respectively to said plurality of band pass filters, and
a plurality of RF switching circuits, each RF switching circuit respectively coupled between each LNA and a pair of LTE RF differential inputs and configured to switch to one or both of said pair of LTE RF differential inputs.
2. The mobile wireless communications device of claim 1 wherein said plurality of LTE RF differential inputs comprises:
a group of low band LTE RF differential inputs;
a group of mid band LTE RF differential inputs; and
a group of high band LTE RF differential inputs.
3. The mobile wireless communications device of claim 1 further comprising a controller configured to operate said plurality of RF switching circuits in a carrier aggregation mode.
4. The mobile wireless communications device of claim 3 wherein said controller is configured to operate based upon a Mobile Industry Processor Interface (MIPI).
5. The mobile wireless communications device of claim 1 wherein said front end circuit comprises a plurality of RF splitters respectively coupled between said plurality of LNAs and said plurality of RF switching circuits.
6. The mobile wireless communications device of claim 5 wherein each RF switching circuit comprises a pair of single-pole, double-throw switches coupled to a respective one of said plurality of RF splitters.
7. The mobile wireless communications device of claim 1 wherein said front end circuit comprises a plurality thereof including a low band front end circuit, a mid band front end circuit, and a high band front end circuit.
8. The mobile wireless communications device of claim 1 wherein said front end circuit comprises a plurality of RF baluns respectively coupled to said plurality of RF switching circuits.
9. The mobile wireless communications device of claim 1 further comprising a housing containing said antenna, said plurality of LTE RF differential inputs, and said front end circuit.
10. A mobile wireless communications device comprising:
an antenna;
a plurality of Long Term Evolution (LTE) radio frequency (RF) differential inputs;
a front end circuit comprising
a plurality of band pass filters coupled to said antenna,
a plurality of LNAs coupled respectively to said plurality of band pass filters,
a plurality of RF switching circuits, each RF switching circuit respectively coupled between each LNA and a pair of LTE RF differential inputs and configured to switch to one or both of said pair of LTE RF differential inputs, and
a controller configured to operate said plurality of RF switching circuits in a carrier aggregation mode; and
a housing containing said antenna, said plurality of LTE RF differential inputs, and said front end circuit.
11. The mobile wireless communications device of claim 10 wherein said plurality of LTE RF differential inputs comprises:
a group of low band LTE RF differential inputs;
a group of mid band LTE RF differential inputs; and
a group of high band LTE RF differential inputs.
12. The mobile wireless communications device of claim 10 wherein said controller is configured to operate based upon a Mobile Industry Processor Interface (MIDI).
13. The mobile wireless communications device of claim 10 wherein said front end circuit comprises a plurality of RF splitters respectively coupled between said plurality of LNAs and said plurality of RF switching circuits.
14. The mobile wireless communications device of claim 13 wherein each RF switching circuit comprises a pair of single-pole, double-throw switches coupled to a respective one of said plurality of RF splitters.
15. The mobile wireless communications device of claim 10 wherein said front end circuit comprises a plurality thereof including a low band front end circuit, a mid band front end circuit, and a high band front end circuit.
16. The mobile wireless communications device of claim 10 wherein said front end circuit comprises a plurality of RF baluns respectively coupled to said plurality of RF switching circuits.
17. A method of making a mobile wireless communications device comprising:
coupling a front end circuit between a plurality of Long Term Evolution (LTE) radio frequency (RF) differential inputs and an antenna, the front end circuit comprising
a plurality of band pass filters coupled to the antenna,
a plurality of LNAs coupled respectively to the plurality of band pass filters, and
a plurality of RF switching circuits, each RF switching circuit respectively coupled between each LNA and a pair of LTE RF differential inputs and configured to switch to one or both of the pair of LTE RF differential inputs.
18. The method of claim 17 wherein the plurality of LTE RF differential inputs comprises:
a group of low band LTE RF differential inputs;
a group of mid band LTE RF differential inputs; and
a group of high band LTE RF differential inputs.
19. The method of claim 17 further comprising coupling a controller to operate the plurality of RF switching circuits in a carrier aggregation mode.
20. The method of claim 19 wherein the controller operates based upon a Mobile Industry Processor Interface (MIPI).
21. The method of claim 17 wherein the front end circuit comprises a plurality of RF splitters respectively coupled between the plurality of LNAs and the plurality of RF switching circuits.
22. The method of claim 21 wherein each RF switching circuit comprises a pair of single-pole, double-throw switches coupled to a respective one of the plurality of RF splitters.