Radiocommunications antenna with misalignment of radiation lobe by variable phase shifter
DCFirst Claim
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1. A radiocommunication antenna, comprising:
- a variable phase adjustment unit that directs a radiation lobe of the antenna by variable phase adjustment and that includes an actuating device with an actuator (41) whose displacement controls the phase shift; and
a module, insertable into the antenna and extractible therefrom, including a mechanical or electromechanical device co-operating with the actuating device to control the displacement of the actuator when the module is installed in the antenna,the actuating device having a control pin (21) comprising a screw (21A) and a shaft (21C) comprising grooves (21E), said control pin (21) being terminated at the end of said screw (21A) by a recess (21B),a block (23), interconnected with a fixed portion (42) of the antenna and comprising a tapered orifice (23C) forming a bearing (23A), anda mobile stop (22), interconnected with said actuator (41), said mobile stop (22) comprising a notch (22A) intended for receiving said recess (21B) of said control pin (21),so that a rotation of said screw (21A), and thereby of the control pin (21), in said bearing (23A) induces the displacement of said actuator (41).
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Abstract
A radiocommunications antenna, notably for cellular radiotelephony network base station, of radiation lobe depointing type induced by variable phase adjustment unit including an actuating device including an actuator (13 or 41) whereof the displacement controls the phase shift, characterised in that it includes a module, insertable into the antenna and extractible therefrom, including a mechanical or electromechanical device co-operating with the actuating device to control the displacement of the actuator (13 or 41) when the module is installed in the antenna.
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Citations
14 Claims
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1. A radiocommunication antenna, comprising:
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a variable phase adjustment unit that directs a radiation lobe of the antenna by variable phase adjustment and that includes an actuating device with an actuator (41) whose displacement controls the phase shift; and a module, insertable into the antenna and extractible therefrom, including a mechanical or electromechanical device co-operating with the actuating device to control the displacement of the actuator when the module is installed in the antenna, the actuating device having a control pin (21) comprising a screw (21A) and a shaft (21C) comprising grooves (21E), said control pin (21) being terminated at the end of said screw (21A) by a recess (21B), a block (23), interconnected with a fixed portion (42) of the antenna and comprising a tapered orifice (23C) forming a bearing (23A), and a mobile stop (22), interconnected with said actuator (41), said mobile stop (22) comprising a notch (22A) intended for receiving said recess (21B) of said control pin (21), so that a rotation of said screw (21A), and thereby of the control pin (21), in said bearing (23A) induces the displacement of said actuator (41). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A radiocommunications antenna, comprising:
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a variable phase adjustment unit that directs a radiation lobe of the antenna by variable phase adjustment and that includes an actuating device with an actuator whose displacement controls the phase shift; an antenna cover having one end closed by an external cap, the variable phase adjustment unit being accessible at the one end of said antenna cover closed by said external cap, said external cap having an opening that exposes an inside of said external cap; and a module removably inserted inside said opening of said external cap and including at least one of a mechanical and electromechanical device, co-operating with the actuating device to control the displacement of the actuator, said module having a plate that closes said opening and external means for removably attaching said plate to said external cap. - View Dependent Claims (13, 14)
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Specification