System and method of integrating and concealing antennas, antenna subsystems and communications subsystems

• US 6,222,503 B1
• Filed: 01/09/1998
• Issued: 04/24/2001
• Est. Priority Date: 01/10/1997
• Status: Expired due to Fees

• Current Assignee: Richard R. Harlan, William Gietema
• Original Assignee: Richard R. Harlan, William Gietema
• Inventors: Harlan, Richard R., Gietema, William
• Primary Examiner(s): Ho, Tan
• Assistant Examiner(s): CHEN, SHIH CHAO
• Application Number:
  US09/005,250
• Time in Patent Office: 1,201 Days
• Field of Search: H01/Q.112, 343/878, 343/879, 343/890, 343/891, 343/892, 343/700.MS
• US Class Current: 343/890
• CPC Class Codes: H01Q 1/1207 for fastening a rigid aerial element
• CPC Class Codes: H01Q 1/246 specially adapted for base stations
• CPC Class Codes: H01Q 1/44 using equipment having another main function to serve additionally as an antenna , e.g. means for giving an antenna an aesthetic aspectH01Q1/27 - H01Q1/34 take precedence

Abstract

A system and method of deploying a plurality of aesthetically unobtrusive radio frequency (RF) antenna systems or complying with zoning ordinances and other restrictive covenants, and for providing an array configuration which is intelligently controlled to overcome many of the limitations of conventional RF antenna systems. Antennas and communications systems components including filter-preamplifier, frequency-converter, and beam-selection/manipulation subsystems are concealed by packaging and integrating them within common pole-like objects and panel-like structures. The pole-like objects include utility poles, street lamps, flagpoles, signs, church steeples, columns, railings, and roof balconies. Panel-like structures include advertising billboards and road signs, and building panels. The concealed antennas and related components are then integrated into larger scale antenna subsystems. The antenna subsystems are connected to an intelligent controller to provide enhanced performance, functionality, and service in communications systems.

Claims

1. A method of concealing a base station radio frequency (RF) antenna array in a modified component of a common object comprising the steps of:

constructing the modified component from a dielectric material;

mounting the antenna array inside the modified component so that the antenna is not visible to an observer; and

substituting the modified component for a normal component of the common object.

2. The method of concealing a base station RF antenna array of claim 1 wherein the step of mounting the antenna array includes mounting a microwave dish inside the modified component.

3. The method of concealing a base station RF antenna array of claim 1 wherein the step of mounting the antenna array includes mounting a horn antenna inside the modified component.

4. The method of concealing a base station RF antenna array of claim 1 wherein the step of constructing a modified component from a dielectric material includes constructing an elongate tube that is normally found in an urban setting and does not appear to be an antenna housing.

5. The method of concealing a base station RF antenna array of claim 4 wherein the step of constructing an elongate tube from a dielectric material includes the steps of:

constructing the tube in a shape which duplicates a top portion of a common pole-like object; and

substituting the tube for the top portion of the common pole-like object.

6. The method of concealing a base station RF antenna array of claim 4 wherein the step of mounting the antenna array includes mounting at least one conforming panel array in the elongate tube.

7. The method of concealing a base station RF antenna array of claim 4 wherein the elongate tube is physically mounted on top of an enclosure at the base thereof, and the method further comprises mounting antenna components comprising a picocell base station in a cellular telephone network inside the enclosure.

8. The method of concealing a base station RF antenna array of claim 1 wherein the step of constructing a modified component from a dielectric material includes constructing the modified component to resemble a common object selected from the group consisting of:

a vertical building column;

a vertical building mullion; and

a horizontal building rail.

9. A method of concealing a base station radio frequency (RF) antenna and associated antenna components in a modified panel-like component of a common structure comprising the steps of:

constructing the modified panel-like component from a dielectric material;

mounting the antenna and the antenna components behind the panel-like component in a position in which the antenna radiates through the dielectric panel-like component and is not visible from in front of the panel-like component; and

substituting the modified panel-like component for a normal component of the common structure.

10. The method of concealing a base station RF antenna and associated antenna components in a panel-like structure of claim 9 wherein the step of constructing the modified panel-like component includes constructing a panel-like component which duplicates a common panel-like component selected from the group consisting of:

a billboard;

a street sign;

a building spandrel panel;

a building roof panel;

a ceiling tile; and

a building wall panel.

11. The method of concealing a base station RF antenna and associated antenna components of claim 9 wherein the step of mounting the antenna and the antenna components behind the modified panel-like component includes a step selected from the group consisting of:

mechanically fastening the antenna and the antenna components to a back surface of the panel-like component;

adhering the antenna and the antenna components to the back surface of the panel-like component; and

embedding the antenna and the antenna components within the dielectric material of the panel-like component.

12. The method of concealing a base station RF antenna and associated antenna components of claim 9 wherein the antenna comprises a plurality of antenna elements, and the step of mounting the antenna behind the panel-like component includes mounting the plurality of antenna elements in an array configuration.

13. The method of concealing a base station RF antenna and associated antenna components of claim 9 wherein the panel-like component includes a wall-mounted enclosure mounted on the back surface thereof and the antenna components comprise a picocell base station in a cellular telephone network, the step of mounting the antenna components including mounting the antenna components inside the enclosure.

14. A concealed base station radio frequency (RF) antenna comprising:

a modified component of a common object constructed from a dielectric material, said said modified component being substituted for a normal component of the common object; and

an antenna array mounted inside the modified component so that the antenna is not visible to an observer, and the modified component appears to be a normal part of the common object.

15. The concealed base station RF antenna of claim 14 wherein the modified component is an elongate tube that is normally found in an urban setting and does not appear to be an antenna housing.

16. A concealed base station radio frequency (RF) antenna comprising:

a modified panel-like component of a common structure that is constructed from a dielectric material, and is substituted for a normal component of the common structure; and

at least one antenna element and associated antenna components mounted behind the panel-like component in a position in which the antenna radiates through the dielectric panel-like component, and is not visible from in front of the panel-like component.

17. The concealed base station RF antenna of claim 16 wherein the shape of the panel-like component duplicates a panel-like component selected from the group consisting of:

a billboard;

a street sign;

a building spandrel panel;

a building roof panel;

a ceiling tile; and

a building wall panel.

18. The concealed base station RF antenna of claim 17 wherein the antenna comprises a plurality of antenna elements mounted in an array configuration.

19. A method of deploying a plurality of distributed, invisible, cellular base station radio frequency (RF) antennas and antenna subsystems, said method comprising the steps of:

concealing each antenna in a common structural object having a geographic location and sufficient vertical height for the antenna to provide RF coverage of a desired area;

electronically connecting each antenna to an associated antenna subsystem; and

electronically connecting each antenna subsystem to an intelligent controller that manipulates the RF coverage area of the plurality of antennas through the associated antenna subsystems.

20. The method of claim 19 wherein the step of concealing each antenna in a common structural object includes concealing each antenna inside a common pole-like object constructed of dielectric material.

21. The method of claim 19 wherein the step of concealing each antenna in a common structural object includes concealing each antenna behind a common panel-like structure constructed of dielectric material.

22. The method of claim 19 wherein the step of concealing each antenna in a common object includes the steps of:

concealing a first subset of the plurality of antennas inside a plurality of common pole-like objects constructed of dielectric material; and

concealing a second subset of the plurality of antennas behind a plurality of common panel-like structures constructed of dielectric material.

23. The method of claim 19 wherein each of the antennas comprises a plurality of antenna elements configured to form an array, and the step of electronically connecting each antenna to an associated antenna subsystem includes connecting each antenna array to a beam forming and steering subsystem which controls an antenna pattern created by each antenna array.

24. The method of claim 23 further comprising the steps of:

detecting that one of the plurality of antennas has malfunctioned;

determining, in the intelligent controller, whether a blind spot has been created by the malfunctioning antenna; and

directing, by the intelligent controller, the beam forming and steering subsystems of antennas neighboring the malfunctioning antenna to reform and redirect their antenna patterns to cover the blind spot, upon determining that a blind spot has been created by the malfunctioning antenna.

25. The method of claim 23 wherein the antenna elements are configured to utilize linear polarization, and circular polarization, and the method further comprises the steps of:

determining, in the intelligent controller, whether performance would be optimized by utilizing circular polarization; and

utilizing circular polarization upon determining that performance would be optimized by utilizing circular polarization.

26. The method of claim 19 wherein the steps of electronically connecting each antenna to an associated antenna subsystem, and electronically connecting each antenna subsystem to an intelligent controller include establishing at least one radio link between the intelligent controller and an antenna subsystem.

27. The method of claim 19 wherein the steps of electronically connecting each antenna to an associated antenna subsystem, and electronically connecting each antenna subsystem to an intelligent controller include establishing at least one fiber-optic link between the intelligent controller and an antenna subsystem.

28. The method of claim 19 further comprising establishing a radio link between the intelligent controller and a satellite.

29. The method of claim 19 wherein a plurality of the antennas and antenna subsystems are concealed in a single structural object, and the method includes controlling, by the intelligent controller, the plurality of antennas and antenna subsystems in the single structural object to form a master antenna.

30. The method of claim 29 further comprising utilizing the master antenna to serve a primary base station within an urban supercell.

31. A method of enabling wireline voice and data terminals within a premises to communicate over a wireless telecommunications network, said method comprising the steps of:

installing an antenna-transceiver subsystem on the premises which converts incoming communications from the wireline voice and data terminals to radio frequency (RF) communications, the antenna-transceiver subsystem being concealed as part of a common structural object on the premises so that the antenna-transceiver subsystem is invisible to an observer; and

connecting the wireline voice and data terminals to the antenna-transceiver subsystem.

32. The method of claim 31 further comprising the steps of:

installing a radio base station for the wireless telecommunications network near the premises, the radio base station being concealed in a common structural object and having an antenna pattern which covers the premises; and

establishing RF communications between the antenna-receiver subsystem and the radio base station.

33. A radio frequency (RF) antenna concealed in a pole-like object comprising:

a microstrip feed circuit;

a first dielectric layer adjacent the microstrip feed circuit;

a first ground plane having at least one aperture therein adjacent the first dielectric layer and opposite the microstrip feed circuit;

a second dielectric layer adjacent the first ground plane and opposite the first dielectric layer;

a first layer of microstrip radiating elements adjacent the second dielectric layer and opposite the first ground plane, the microstrip radiating elements being energized by an electromagnetic field generated by the microstrip feed circuit and passing through the apertures in the first ground plane;

a third dielectric layer adjacent the first layer of microstrip radiating elements and opposite the second dielectric layer;

a second layer of microstrip radiating elements adjacent the third dielectric layer and opposite the first layer of microstrip radiating elements, the radiating elements in the second layer being energized by an electromagnetic field generated by the feed circuit and passing through the apertures in the first ground plane, and each element in the second layer being rotated 90 degrees in the plane of the layer from the orientation of the elements in the first layer of radiating elements; and

a dielectric lens layer adjacent the second layer of microstrip radiating elements and opposite the third dielectric layer.

34. The RF antenna of claim 33 further comprising an outer protective radome adjacent the second layer of microstrip radiating elements and opposite the third dielectric layer.

35. A radio frequency (RF) antenna suitable for concealing in a pole-like object comprising:

a first ground plane formed as a tube to fit within the pole-like object;

a first concentric dielectric layer adjacent the first ground plane;

a concentric stripline feed circuit adjacent the first dielectric layer and opposite the first ground plane;

a second concentric dielectric layer adjacent the stripline feed circuit and opposite the first dielectric layer;

a second concentric ground plane having at least one aperture therein adjacent the second dielectric layer and opposite the stripline feed circuit;

a third concentric dielectric layer adjacent the outer ground plane and opposite the second dielectric layer; and

a first concentric layer of radiating elements adjacent the third dielectric layer and opposite the second ground plane, the radiating elements being energized by an electromagnetic field generated by the stripline feed circuit and passing through the apertures in the second ground plane.

36. The RF antenna of claim 35 further comprising:

a fourth concentric dielectric layer adjacent the first layer of radiating elements and opposite the third dielectric layer; and

a second concentric layer of microstrip radiating elements adjacent the fourth dielectric layer and opposite the first layer of microstrip radiating elements, the radiating elements in the second layer being energized by an electromagnetic field generated by the stripline feed circuit and passing through the apertures in the second ground plane, and each element in the second layer of elements being rotated 90 degrees in the plane of the layer from the orientation of the elements in the first layer of radiating elements.

37. The RF antenna of claim 36 further comprising a concentric dielectric lens layer adjacent the second layer of microstrip radiating elements and opposite the fourth dielectric layer.

38. The RF antenna of claim 36 further comprising a concentric outer protective radome adjacent the second layer of microstrip radiating elements and opposite the fourth dielectric layer.