Antenna system
View Patent ↗An antenna assembly for emitting a signal. The antenna assembly includes at least two antennas which are separated into a first group and a second group. Both groups of antennas are mounted on a panel. A first phase adjuster is coupled to the fist antenna group. The first phase adjuster is also coupled to a second phase adjuster, which is also coupled to said second antenna group. The first phase adjuster is coupled to the second phase adjuster, such that an adjustment of the first phase adjuster causes an adjustment of the second phase adjuster. The first phase adjuster is adapted to adjust a phase angle of the signal of the first antenna group, while the second phase adjuster is adapted to adjust a phase angle of the signal of said second antenna group.
1. A cellular base station antenna system, comprising:
a. an elongated panel antenna adapted to be mounted vertically and having a front side and a back side, said antenna producing a beam, said antenna comprising:
i. a feed system configured to supply signals to an arrangement of spaced first, second, third and fourth radiating elements on the front side of the panel antenna; and
ii. an electromechanical phase adjustment system, comprising:
1. a first mechanical phase shifting component located on the back side of the panel antenna and in said feed system;
2. said first phase shifting component including a first stationary transmission line of arcuate configuration component coupled at opposed ends to the first and second radiating elements, and a signal-conducting moveable first wiper component configured to wipe across said first transmission line component and thereby shorten the signal path to one of said first and second coupled radiating elements while lengthening the signal path to the other of said coupled radiating elements;
3. a second mechanical phase shifting component located on the back side of the panel antenna and in said feed system;
4. said second phase shifting component including a second stationary transmission line component of arcuate configuration coupled at opposed ends to the third and fourth radiating elements, and a signal-conducting moveable second wiper component configured to wipe across said second transmission line component and thereby shorten the signal path to one of said third and fourth coupled radiating elements while lengthening the signal path to the other of said coupled radiating elements;
5. a motor supported by said panel antenna below said first and second phase shifting components at the bottom of the panel antenna;
6. a mechanical linkage coupling said motor to said first and second wiper components, said linkage including an elongated member between said motor at the bottom of the panel antenna and said first and second moveable wiper components and coupled to at least one pivotally mounted wiper arm supporting at least one of said first and second moveable wiper components such that activation of said motor causes said elongated member to move in a lengthwise direction along said panel antenna, causes said first and second wiper components to simultaneously wipe arcuately across said transmission line components, and causes the fixed elevation of the beam to change in relation to the direction and magnitude of the movement of said elongated member; and
b. a beam elevation control system, comprising:
i. a motor controller located remotely from said antenna and coupled to said motor;
ii. said motor controller being configured to transmit beam elevation commands to said motor and to thereby make adjustments in beam elevation.
2. The antenna system defined by claim 1 wherein one of said first and second wiper components moves twice as far as the other of said wiper components when said elongated member is moved.
3. The antenna system defined by claim 1 further including a link interconnecting said first and second wiper components.
4. The antenna system defined by claim 1 wherein said mechanical linkage converts rotary movement of the motor to linear movement of the elongated member.
5. The antenna system defined by claim 1 wherein said beam elevation control system includes a beam position identifier to which said motor controller is responsive.
6. The antenna system defined by claim 1 wherein said elongated member has a terminus near a lower edge of said panel antenna.
7. The antenna system defined by claim 6 wherein said terminus of said elongated member is adapted first to facilitate manual manipulation of said elongated member to adjust beam elevation, and second to facilitate connection of said motor into said antenna system for remote electrical adjustment of beam elevation.
8. The antenna system defined by claim 6 wherein said terminus includes a threaded coupling nut through which said elongated member extends for connection to said motor.
9. The antenna system defined by claim 1 wherein said elongated member includes indicia providing an indication of beam elevation based upon the position of the elongated member.
10. The antenna system defined by claim 1 wherein said elongated member is composed of plastic.
11. The antenna system defined by claim 1 wherein said motor is adapted to be retrofitted to said panel antenna so as to hang below said panel antenna for easy installation.
12. The antenna system defined by claim 1 wherein said motor is configured to be retrofitted into said electromechanical phase adjustment system.
13. A cellular base station antenna system, comprising:
a. an elongated panel antenna adapted to be mounted vertically and having a front side and a back side, said antenna producing a beam, said antenna comprising:
i. a feed system configured to supply signals to an arrangement of spaced first, second, third and fourth radiating elements on the front side of the panel antenna; and
ii. an electromechanical phase adjustment system, comprising:
1. a first mechanical phase shifting component located on the back side of the panel antenna and in said feed system;
2. said first phase shifting component including a first stationary transmission line component of arcuate configuration coupled at opposed ends to the first and second radiating elements, and a signal-conducting moveable first wiper component configured to wipe across said first transmission line component and thereby shorten the signal path to one of said first and second coupled radiating elements while lengthening the signal path to the other of said coupled radiating elements;
3. a second mechanical phase shifting component located on the back side of the panel antenna and in said feed system;
4. said second phase shifting component including a second stationary transmission line component of arcuate configuration coupled at opposed ends to the third and fourth radiating elements, and a signal-conducting moveable second wiper component configured to wipe across said second transmission line component and thereby shorten the signal path to one of said third and fourth coupled radiating elements while lengthening the signal path to the other of said coupled radiating elements;
5. a motor supported by said panel antenna below said first and second phase shifting components at the bottom of the panel antenna;
6. a mechanical linkage coupling said motor to said first and second wiper components, said linkage including an elongated member between said motor at the bottom of the panel antenna and said first and second moveable wiper components and coupled to at least one pivotally mounted wiper arm supporting at least one of said first and second moveable wiper components such that activation of said motor causes said elongated member to move in a lengthwise direction along said panel antenna, causes said first and second wiper components to simultaneously wipe arcuately across said transmission line components, and causes the fixed elevation of the beam to change in relation to the direction and magnitude of the movement of said member; and
b. a beam elevation control system, comprising:
i. a first controller coupled directly to said motor; and
ii. a second controller coupled to said first controller from a location remote from said first controller;
iii. at least one of said controllers being configured to transmit beam elevation commands to said motor to cause the motor to make adjustments in fixed beam elevation.
14. The antenna system defined by claim 13 wherein said linkage is terminated below said panel antenna by a provision configured to enable said elongated member to be manually manipulated to adjust beam elevation if said motor is removed.
15. The antenna system defined by claim 14 wherein said provision includes a coupling nut for connecting said motor to said linkage.
16. The antenna system defined by claim 15 wherein said elongated member extends through said coupling nut for operative connection with drive means in said motor such that pulses sent to said motor from said first controller produce pulsed rotation of said motor causing step-wise linear movement of said elongated member and adjustment of the beam elevation.
17. The antenna system defined by claim 13 wherein one of said first and second wiper components moves twice as far as the other of said wiper components when said elongated member is moved.
18. The antenna system defined by claim 13 wherein said mechanical linkage converts between rotary movement of the motor and linear movement of the elongated member.
19. The antenna system defined by claim 13 wherein said beam elevation control system includes a beam position identifier to which said controller is responsive.
20. The antenna system defined by claim 13 wherein said elongated member has a terminus near a lower edge of said panel antenna.
21. The antenna system defined by claim 20 wherein said terminus of said elongated member is adapted first to facilitate manual manipulation of said elongated member to adjust beam elevation, and second to facilitate connection of said motor to said antenna system for remote electrical adjustment of beam elevation.
22. The antenna system defined by claim 20 wherein said terminus includes a threaded coupling nut through which said elongated member extends for connection to said motor.
23. The antenna system defined by claim 13 wherein said elongated member includes indicia providing an indication of beam elevation based upon the position of the elongated member.
24. The antenna system defined by claim 13 wherein said elongated member is composed of plastic.
25. The antenna system defined by claim 13 wherein said motor is adapted to be retrofitted to said panel antenna so as to hang below said panel antenna for easy installation.
26. The antenna system defined by claim 13 wherein said motor is configured to be retrofitted to said electromechanical phase adjustment system.
27. A cellular base station antenna system, comprising:
a. an elongated panel antenna adapted to be mounted vertically and having a front side and a back side, said antenna producing a beam, said antenna comprising:
i. a feed system configured to supply signals to an arrangement of spaced first and second radiating elements on the front side of the panel antenna; and
ii. an electromechanical phase shifter including a stationary transmission line component of arcuate configuration coupled at opposed ends to the first and second radiating elements, and a signal-conducting moveable wiper component supported on a pivotally mounted wiper arm configured to wipe said wiper component arcuately across said stationary transmission line component and thereby shorten the signal path to one of said first and second coupled radiating elements while lengthening the signal path to the other of said coupled radiating elements;
a mechanical linkage including an elongated member extending lengthwise along a portion of said panel antenna from a terminus located near a bottom edge of said panel antenna to said pivotally mounted wiper arm, said wiper arm converting linear movement of said elongated member to arcuate movement of said moveable wiper component; and
wherein said terminus is structured first to facilitate manual linear manipulation of said elongated member to adjust beam elevation and second to facilitate connection to a remotely controllable electric motor.
28. The antenna system defined by claim 27 wherein said linkage is terminated below said panel antenna by a provision configured to permit said elongated member to be manually manipulated to adjust beam elevation.
29. The antenna system defined by claim 28 wherein said provision includes a coupling nut for connecting a motor to said linkage.
30. The antenna system defined by claim 29 wherein said elongated member extends through said coupling nut for operative connection with drive means in a motor such that pulses sent to said motor from a controller produce pulsed rotation of said motor causing step-wise linear movement of said elongated member and adjustment of the beam elevation.
31. The antenna system defined by claim 27 wherein said elongated member includes indicia providing an indication of beam elevation based upon the position of the elongated member.
32. The antenna system defined by claim 27 wherein said elongated member is composed of plastic.
33. For use with a cellular base station antenna adapted to mount a plurality of radiating elements, a signal phase adjuster coupled to said radiating elements, and a linearly reciprocable, phase-adjustment mechanical linkage coupled to said phase adjuster and having a terminating provision located beyond an edge of said antenna, an article of manufacture comprising an electric actuator configured to connect to said provision to permit said phase adjuster to be manipulated under control of a remotely located controller.