Transmission and reception antenna system for space diversity reception
First Claim
1. A radio frequency antenna system (1e) capable of operating in a transmission mode and a reception mode, said system comprising:
- a first antenna (12) optimally tuned for receiving signals in a first frequency band;
a second antenna (10) optimally tuned for transmitting signals in a second frequency band different from the first frequency band when the system is operating in the transmission mode; and
means (20), operatively connected to the second antenna (10), for tuning the second antenna (10) to a third frequency band substantially equal to the first frequency band when the system is operating in the reception mode so that the second antenna (10) also receives the signals in the first frequency band.
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0 Petitions
Accused Products
Abstract
A method and device for achieving space diversity reception in a system that has a first antenna and a second antenna disposed apart from each other over a quarter wavelength of the operating frequency, wherein the first antenna is optimally tuned to a first frequency for receiving signals in an operating mode. In its first function, the second antenna is optimally tuned to a second frequency for transmitting signals in the same mode or for receiving signals in a different mode. In its second function, the second antenna can be tuned to the first frequency so that it also receives signals in the first frequency in the same mode as the first antenna. The signals in the first frequency received by the second antenna are combined with the signals received by the first antenna.
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Citations
24 Claims
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1. A radio frequency antenna system (1e) capable of operating in a transmission mode and a reception mode, said system comprising:
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a first antenna (12) optimally tuned for receiving signals in a first frequency band;
a second antenna (10) optimally tuned for transmitting signals in a second frequency band different from the first frequency band when the system is operating in the transmission mode; and
means (20), operatively connected to the second antenna (10), for tuning the second antenna (10) to a third frequency band substantially equal to the first frequency band when the system is operating in the reception mode so that the second antenna (10) also receives the signals in the first frequency band. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of transmitting and receiving radio frequency signals in a telecommunications device (150), said device having
a first antenna (12) optimally tuned for receiving signals in a first frequency band; - and
a second antenna (10) operable in a transmission mode and a reception mode, wherein the second antenna is optimally tuned for transmitting signals in a second frequency band different from the first frequency band when the second antenna is operating in the transmission mode, said method comprising the step of tuning the second antenna to a third frequency band substantially equal to the first frequency band when the second antenna is operating in the reception mode so that the second antenna also receives the signals in the first frequency band. - View Dependent Claims (9, 10)
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11. A radio receiver system (1d) operable at a first mode and a second mode, the system having a first subsystem (134) and a second subsystem (124), wherein the first subsystem (134) includes a first receiver (62) and a first antenna (13) capable of receiving signals in the first mode in a first frequency range for providing the received signals to the first receiver (62), and the second subsystem (124) includes a second receiver (50) and a second antenna capable of receiving signals in the second mode in a second frequency range different from the first frequency range for providing the received signals to the second receiver (50), said system comprising:
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a first means (22), operatively connected to the first antenna (13), for tuning the first antenna to a reception frequency in the second frequency range when the system is operating in the second mode, such that the first antenna (13) also receives the signals in the second mode in the second frequency range; and
a second means (32), operatively connected to the first antenna (13) and the second receiver (50), for routing the signals received by the first antenna (13) in the second mode to the second receiver (50). - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A radio communication system (1e) including a first subsystem (150) and a second subsystem (140), wherein the first subsystem (150) includes a receiver (54) operating at a first frequency range, and the second subsystem (140) includes a transmitter (44) operating at a second frequency range different from the first frequency range, said system comprising:
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a first antenna (12) operatively connected to the receiver (54) and optimally tuned for receiving signals in the first frequency range and conveying the received signals to the receiver (54) when the system is used for reception;
a second antenna (10) operatively connected to the transmitter (44) and optimally tuned to the second frequency for transmitting signals from the transmitter (44) when the system is used for transmission;
a tuning mechanism (20), operatively connected to the second antenna (10) for tuning the second antenna (10) to a third frequency range substantially equal to the first frequency range when the system is used for reception, so that the second antenna also receives signals in the first frequency range; and
means (30, 34), operatively connected to the second antenna (10) and the receiver (54), for conveying the signals in the first frequency range received by the second antenna (10) to the receiver when the system is used for reception. - View Dependent Claims (20, 21, 22)
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23. A method of radio telecommunications in a telecommunications device (1f) operable in a first mode (G850) in a first frequency range and a second mode (G19) in a second frequency range different from the first frequency range, the device (1f) including:
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a first antenna (12) capable of receiving signals in the first frequency range and conveying the received signals in the first frequency range to a first receiver (53), when the device is operating in the first mode (G850); and
a second antenna (13) capable of receiving signals in the second frequency range and conveying the received signals in the second frequency range to a second receiver (56), when the device is operating in the second mode (G19), said method comprising the steps of;
tuning the first antenna to a reception frequency in the second frequency range (1900) when the device is operating in the second mode (G19), such that the first antenna (12) also receives the signals in the second frequency range; and
providing the signals received in the second frequency range by the first antenna (12) to the second receiver (56). - View Dependent Claims (24)
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Specification