Dual frequency band wireless LAN
First Claim
1. A wireless LAN device having a dual band capability comprising:
- a primary transceiver including a first RF communication device; and
a secondary transceiver including a partial RF communication device that utilizes features of the primary transceiver to be able to perform as a second RF communication device,wherein a fine step frequency control is implemented solely on the primary transceiver and a coarse step frequency control is implemented solely on the secondary transceiver.
3 Assignments
0 Petitions
Accused Products
Abstract
A dual band radio is constructed using a primary and secondary transceiver. The primary transceiver is a complete radio that is operational in a stand alone configuration. The secondary transceiver is a not a complete radio and is configured to re-use components such as fine gain control and fine frequency stepping of the primary transceiver to produce operational frequencies of the secondary transceiver. The primary transceiver acts like an intermediate frequency device for the secondary transceiver. Switches are utilized to divert signals to/from the primary transceiver from/to the secondary transceiver. The switches are also configured to act as gain control devices. Antennas are selected using either wideband or narrowband antenna switches that are configured as a diode bridge having high impedance at operational frequencies on control lines that bias the diodes.
88 Citations
94 Claims
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1. A wireless LAN device having a dual band capability comprising:
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a primary transceiver including a first RF communication device; and a secondary transceiver including a partial RF communication device that utilizes features of the primary transceiver to be able to perform as a second RF communication device, wherein a fine step frequency control is implemented solely on the primary transceiver and a coarse step frequency control is implemented solely on the secondary transceiver. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A wireless LAN device having a dual band capability comprising:
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a primary transceiver including a first RF communication device and a fine step frequency control; and a secondary transceiver including a partial RF communication device that utilizes features of the primary transceiver to be able to perform as a second RF communication device, wherein the secondary transceiver uses a fixed frequency signal and a tuned frequency of the primary transceiver to create an operational frequency signal of the secondary transceiver.
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9. A wireless LAN device having a dual band capability comprising:
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a primary transceiver including a first RF communication device; a secondary transceiver including a partial RF communication device that utilizes features of the primary transceiver to be able to perform as a second RF communication device, wherein a fine step gain control mechanism is implemented solely on the primary transceiver and a coarse step gain control mechanism is implemented solely on the secondary transceiver. - View Dependent Claims (10)
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11. A wireless LAN device having a dual band RF capability comprising:
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a primary transceiver including a first RF communication device; and a secondary transceiver including a partial RF communication device that utilizes features of the primary transceiver to be able to perform as a second RF communication device; at least two antennas and an antenna switch configured to select at least one of the antennas to operate with a currently active one of the primary transceiver and the secondary transceiver; a tunable Hi/Lo filter coupled between the antennas and a front end of the primary transceiver; and a control device that recognizes a channel currently tuned to by the primary transceiver and sends a signal to the tunable Hi/Lo filter to tune it to a pass band such that the channel of the primary transceiver is passed by the tunable filter. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A device, comprising:
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a wireless LAN device; a primary transceiver coupled to the wireless LAN device; and a secondary transceiver coupled to the wireless LAN device, wherein the primary transceiver includes a first RF communication device and a fine step frequency control mechanism implemented solely on the primary transceiver, wherein the secondary transceiver includes a partial RF communication device that utilizes features of the primary transceiver to be able to perform as a second RF communication device and a coarse step frequency control mechanism implemented solely on the secondary transceiver. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94)
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70. The device according 69, further comprising a detection selection switch configured to select the primary signal strength detector for detecting transmit signal strength when the primary transceiver is transmitting and to select the secondary signal strength detector for detecting transmit signal power when the secondary transceiver is transmitting.
Specification