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| Smoke and heat detector alarm |
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| Door alarm system |
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| Armour-piercing high-explosive projectile with cartridge |
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| Contoured dental posts |
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| Process and apparatus for treating teeth |
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| High performance acoustical cleaning apparatus for teeth |
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| Dental prosthesis |
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| Externally synchronized timebase |
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Antenna system and method thereof
| Details |
Inventors: van der Plas, Jaap;
Assignee: Lucent Technologies, Inc. (Holmdel, NJ)
Primary Examiner: Hunter; Daniel S.
Assistant Examiner: Armstrong; Darnell R.
Attorney, Agent or Firm:
The improved antenna system provides significant cost reduction and improves the modularity of the antenna system by combining the power supply lines and the control lines on a single line. Control circuitry is responsive to a power supply signal which acts as the power supply for the antenna system to control the operation of the antenna system. In certain embodiments, the improved antenna system is connected to a single line which carries communication signals and the power supply signal. As such, the antenna system combines the communication lines, the power supply lines and control lines to provide a modular antenna system at a reduced cost. In controlling the antenna system, the control circuitry can control the operation of signal circuitry, which handles the communication signals, in response to the control information provided by the power supply signal. The control circuitry can control other features of the antenna system, such as antenna diversity circuitry, in response to the power supply signal. The control information can be provided by the power supply signal in a variety of forms, such as power supply bias voltage levels and/or interruptions in the power supply signal. The control circuitry responds to the control information to control the operation of the antenna system in a desired manner. |
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DETAILED DESCRIPTION The improved antenna system provides significant cost reduction and improves the modularity of the antenna system by combining the power supply lines and the control lines on a single line.
Control circuitry is responsive to a power supply signal which acts as the power supply for the antenna system to control the operation of the antenna system.
In certain embodiments, the improved antenna system is connected to a single line which carries communication signals and the power supply signal.
As such, the antenna system combines the communication lines, the power supply lines and control lines to provide a modular antenna system at a reduced cost.
In controlling the antenna system, the control circuitry can control the operation of signal circuitry, which handles the communication signals, in response to the control information provided by the power supply signal.
The control circuitry can control other features of the antenna system, such as antenna diversity circuitry, in response to the power supply signal.
The control information can be provided by the power supply signal in a variety of forms, such as power supply bias voltage levels and/or interruptions in the power supply signal.
The control circuitry responds to the control information to control the operation of the antenna system in a desired manner.
In accordance with certain embodiments of the present invention, the signal circuitry can include transmit circuitry and/or receive circuitry, and depending on the embodiment, the improved antenna system can provide antenna diversity.
In certain embodiments combining an active antenna system with antenna diversity, the active diversity antenna system includes control circuitry which is responsive to the power supply bias voltage on the line to control the active antenna system and also to provide antenna diversity.
In one such embodiment, the active diversity control circuitry accomplishes this by controlling the operation of the signal circuitry (transmit circuitry and/or receive circuitry) and the switching between antennas in response to the bias voltage on the line
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Telecommunications 
