Modular type cellular antenna assembly
View Patent ↗A individually formed radiating unit, an antenna array, and an antenna assembly are provided. The individually formed radiating unit includes a reflector, at least one radiating element integrated into a first side of the reflector, and a housing disposed on a second side of the reflector. The housing forms a chamber for housing a feed network.
1. An antenna array comprising:
a plurality of separate, individually formed modular radiating units, each modular radiating unit comprising:
a unitary body comprising a reflector, a radiating element disposed on a first side of the reflector, and a housing disposed on a second side of the reflector;
wherein reflectors of respective ones of the plurality of modular radiating units overlap, wherein the plurality of modular radiating units are linked together via joints of the respective ones of the plurality of modular radiating units, and
wherein respective housings of the plurality of modular radiating units which are linked together to form at least one chamber in which a feed network is disposed, the feed network being coupled to the radiating elements.
2. The antenna array of claim 1 further comprising at least first and second dielectric sheets located on opposing sides of the feed network.
3. The antenna array of claim 2 wherein at least one of the first or second dielectric sheets include at least one sub-sheet formed from a first dielectric material, and at least one sub-sheet formed from a second dielectric material and a third dielectric material, wherein the sub-sheet formed from the first dielectric material adjustably slides relative to the sub-sheet formed from the second and third dielectric materials thereby permitting a beam formed by the radiating elements to scan in space.
4. The antenna array of claim 1 wherein the feed network further comprises at least one adjustable phase shift device.
5. The antenna array of claim 4 wherein the at least one adjustable phase shift device includes a plurality of individual adjustable phase shift devices.
6. The antenna array of claim 5 wherein the plurality of individual adjustable phase shift devices are linked together.
7. The antenna array of claim 1 , wherein at least one radiating element comprises a dipole element which is coupled to the feed network by a balun.
8. The antenna array of claim 1 , wherein the feed network comprises a stripline feed network.
9. The antenna array of claim 1 , wherein the feed network comprises a first feed network isolated from a second feed network, and wherein the at least one chamber comprises a double chamber including a first chamber housing the first feed network and a second chamber housing the second feed network.
10. The antenna array of claim 1 , wherein the radiating element and the reflector of each unitary body are formed without use of fasteners and without a joint between the radiating element and the reflector.
11. An antenna array, comprising:
a plurality of separate, individually formed modular radiating units assembled together, each modular radiating unit comprising a reflector comprising a first ground plane and a second ground plane, wherein each of the first ground plane and the second ground plane comprise a joint formed so that a conductive surface of adjacent modular radiating units form a capacitive coupling between the adjacent modular radiating units, and wherein the first ground planes and second ground planes of the plurality of modular radiating units collectively define an enclosure running in a longitudinal dimension of the antenna array;
each modular radiating unit further comprising a respective radiating element integrated into the first ground plane of each respective radiating unit and external to the enclosure; and
a feed network disposed inside the enclosure, between the first ground plane and the second ground plane, and coupled to the radiating elements.
12. The antenna array of claim 11 , wherein the feed network further comprises a plurality of adjustable phase shifters located within the enclosure.
13. The antenna array of claim 11 , wherein each of the radiating elements is coupled to the feed network by a separately formed balun.
14. The antenna array of claim 11 , wherein each of the radiating elements comprises a dipole element integrated into the reflector, wherein the dipole element is coupled to the feed network by a balun connected to the radiating element.