Multiband antenna apparatus and methods
First Claim
1. An antenna comprising:
- a dielectric element having a longitudinal direction and a transverse direction, said element being deposited at least partially on a ground plane;
a conductive coating deposited on the dielectric element, the conductive coating having a first portion and a second portion, wherein all of said second portion and at least a radiating part of said first portion are disposed substantially within the same plane;
a feed structure coupled to the conductive coating; and
a resonant structure formed between the first portion and the second portion to electrically isolate the first portion and the second portion at a first frequency, and to form first and second resonators.
3 Assignments
0 Petitions
Accused Products
Abstract
A multiband antenna, and component for implementing a multiband antenna for, e.g., a small-sized radio device. In one embodiment, the antenna component comprises a simple and reliable dielectric substrate, the conductive coating of which forms a radiating element. This has a plurality (e.g., two) resonances for forming separate operating bands. The lower resonance is based on the entire element, and the upper resonance on the head part of the element. The conductive coating has a pattern, which functions as a parallel resonance circuit between the head part and the tail part of the element. The natural frequency of this parallel resonance circuit is in the range of the upper operating band of the antenna. The resonance frequencies of the antenna and thus its operating bands can be tuned independently of each other so that the tuning cycle need not be repeated.
114 Citations
45 Claims
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1. An antenna comprising:
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a dielectric element having a longitudinal direction and a transverse direction, said element being deposited at least partially on a ground plane; a conductive coating deposited on the dielectric element, the conductive coating having a first portion and a second portion, wherein all of said second portion and at least a radiating part of said first portion are disposed substantially within the same plane; a feed structure coupled to the conductive coating; and a resonant structure formed between the first portion and the second portion to electrically isolate the first portion and the second portion at a first frequency, and to form first and second resonators. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A radio frequency device comprising:
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a multi-band antenna deposited on a dielectric substrate, the multi-band antenna comprising a first portion and a second portion; a ground structure; a feed structure coupled to at least one of the first portion and the second portion, said feed structure and said ground structure forming a single connection; and a resonant structure formed between the first portion and the second portion to electrically isolate the first portion and the second portion within a first frequency band, and to form a first resonator and a second resonator; wherein the first resonator and the second resonator are substantially electrically isolated from each another with respect to at least frequency tuning. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A multi-band antenna manufactured according to the method comprising:
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mounting a dielectric substrate at least partially on a ground plane, wherein said ground plane is arranged a certain distance away from said dielectric substrate at least on one side; disposing conductive material as a first portion and a second portion on the dielectric substrate; disposing a resonant structure between the first portion and the second portion to produce a first resonator and a second resonator;
whereinsaid first portion and said second portion are arranged to create inductance and capacitance parallelly disposed in between said first and second portions; and disposing a feed structure on at least one of the first portion and the second portion. - View Dependent Claims (20, 21, 22, 23, 24)
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25. A mobile radio frequency device comprising:
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a transceiver; and an antenna in signal communication with said transceiver, said antenna having; a first conductive portion deposited on a dielectric substrate; a second conductive portion deposited on the dielectric substrate, wherein all of said second portion and at least the radiating part of said first portion are disposed substantially within the same plane; and a resonant structure formed between the first conductive portion and the second conductive portion; wherein the first conductive portion forms, with the dielectric substrate, a first resonator that resonates within a first frequency band. - View Dependent Claims (26, 27, 28, 29, 30)
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31. An antenna component for implementing an antenna of a radio device, the antenna having at least a lower and an upper operating band, said component comprising:
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a dielectric substrate with a longitudinal and a transverse direction; and a conductive coating of the substrate forming a radiating element having a feed end for signal communication with a feed conductor of the antenna; wherein the radiating element is formed into at least a head part and a tail part, said head part proximate said feed end, said head and tail parts being coupled to each other only through at least one interconnecting conductor formed from the conductive coating of the substrate, said at least one conductor providing an inductance between the head part and the tail part, said head and tail parts further being capacitively coupled to each other via at least one non-conductive slot on the substrate; wherein a resonance frequency of a parallel resonance circuit formed by said at least one conductor and said capacitive coupling is disposed in the range of said upper operating band so as to substantially separate the tail part electrically from the head part at the upper operating band. - View Dependent Claims (32, 33, 34, 35, 36, 37)
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38. A radio device, said device comprising a circuit board, a conductive surface of which functions as a ground plane, and an antenna, the antenna comprising an antenna component having at least a lower and an upper operating band, said component comprising:
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a dielectric substrate with a longitudinal and a transverse direction; and a conductive coating of the substrate forming a radiating element having a feed end for signal communication with a feed conductor of the antenna; wherein the radiating element is formed into at least a head part and a tail part, said head part proximate said feed end, said head and tail parts being coupled to each other only through at least one interconnecting conductor formed from the conductive coating of the substrate, said at least one conductor providing an inductance between the head part and the tail part, said head and tail parts further being capacitively coupled to each other via at least one non-conductive slot on the substrate; wherein said antenna component is disposed substantially on the circuit board with its lower surface against the circuit board and with the feed end of the radiating element is connected to the feed conductor of the antenna; and wherein said ground plane is arranged a prescribed distance away from said dielectric element at least on one side. - View Dependent Claims (39, 40, 41)
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42. An antenna component for implementing an antenna of a radio device, the antenna having at least a lower and an upper operating band, said component comprising:
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a dielectric substrate with a longitudinal and a transverse direction; and a conductive coating of the substrate forming a radiating element having a feed end for signal communication with a feed conductor of the antenna; wherein the radiating element is formed into at least a head part and a tail part, said head part proximate said feed end, said head and tail parts being coupled to each other only through at least one interconnecting conductor formed from the conductive coating of the substrate, said at least one conductor providing an inductance between the head part and the tail part, said head and tail parts further being capacitively coupled to each other via at least one non-conductive slot on the substrate; wherein said at least one conductor is substantially straight and runs in said longitudinal direction of the substrate in substantially central area of its upper surface, said at least one non-conductive slot comprising two slots each being disposed lateral to the at least one conductor on a different side thereof.
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43. An antenna component for implementing an antenna of a radio device, the antenna having at least a lower and an upper operating band, said component comprising:
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a dielectric substrate with a longitudinal and a transverse direction; and a conductive coating of the substrate forming a radiating element having a feed end for signal communication with a feed conductor of the antenna; wherein the radiating element is formed into at least a head part and a tail part, said head part proximate said feed end, said head and tail parts being coupled to each other only through at least one interconnecting conductor formed from the conductive coating of the substrate, said at least one conductor providing an inductance between the head part and the tail part, said head and tail parts further being capacitively coupled to each other via at least one non-conductive slot on the substrate; wherein said at least one conductor is straight and runs in the longitudinal direction of the substrate substantially on the edge of its upper surface, and said non-conductive slot is disposed only on one side of the at least one conductor.
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44. An antenna comprising:
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a dielectric element having a longitudinal direction and a transverse direction, said element being deposited at least partially on a ground plane;
wherein said ground plane is arranged a distance away from said dielectric element at least on one side;a conductive coating deposited on the dielectric element, the conductive coating having a first portion and a second portion; a ground structure; a feed structure coupled to at least one of the first portion and the second portion, wherein said feed structure and said ground structure forming a single connection; and a resonant structure formed between the first portion and the second portion to electrically isolate the first portion and the second portion at a first frequency, and to form first and second resonators.
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45. A radio frequency device comprising:
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a multi-band antenna deposited on a dielectric substrate, the multi-band antenna comprising a first portion and a second portion; wherein all of said second portion and at least the radiating part of said first portion are disposed substantially on the same plane and said first portion and said second portion are arranged to cause inductance and capacitance disposed in parallel between said first and second portions; a resonant structure formed between the first portion and the second portion to electrically isolate the first portion and the second portion within a first frequency band, and to form a first resonator and a second resonator; wherein the first resonator and the second resonator are substantially electrically isolated from each another with respect to at least frequency tuning.
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Specification