Full Band RF Booster
First Claim
1. A radio repeater, comprising:
- a transmit antenna having an elongated shape with a longitudinal axis and disposed on a first planar substrate;
a receive antenna subassembly disposed on a second planar substrate, wherein the receive antenna subassembly is comprised of two elongated antennas spaced apart from each other such that longitudinal axis of the two elongated antennas are parallel to each other but perpendicular to longitudinal axis of the transmit antenna and the first planar substrate is arranged substantially parallel with the second planar substrate; and
an amplifier circuit electrically coupled between the receive antenna subassembly and the transmit antenna.
1 Assignment
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Accused Products
Abstract
A directional repeater system is presented with a simple architecture composed of wideband receive and transmit antennas, a high gain low-power amplifier and a bandpass filter suitable for use in the 2450 MHz ISM band. Close to 70 dB of isolation between transmit and receive antennas over the entire band is achieved for a compact structure. The isolation between the transmit and receive antennas is achieved using polarization mismatch between orthogonal double-stack patch antennas and a two-element receive antenna whose elements are appropriately located with respect to the edge of the substrate ground plane and the transmit antenna to cancel the signal leakage from the transmit antenna to the individual receive antennas. A major advantage of this invention is that the entire bandwidth can be used going through a chain of repeaters whereas for conventional repeaters the available bandwidth is halved for every repeater in the chain.
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Citations
15 Claims
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1. A radio repeater, comprising:
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a transmit antenna having an elongated shape with a longitudinal axis and disposed on a first planar substrate; a receive antenna subassembly disposed on a second planar substrate, wherein the receive antenna subassembly is comprised of two elongated antennas spaced apart from each other such that longitudinal axis of the two elongated antennas are parallel to each other but perpendicular to longitudinal axis of the transmit antenna and the first planar substrate is arranged substantially parallel with the second planar substrate; and an amplifier circuit electrically coupled between the receive antenna subassembly and the transmit antenna. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A radio repeater, comprising:
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a transmit patch antenna having a rectangular shape and disposed on a first planar substrate; a receive antenna assembly disposed on a second planar substrate, wherein the receive antenna assembly is comprised of two rectangular patch antennas spaced apart from each other whose inputs are connected by a microstrip line such that longitudinal axis of the two rectangular patch antennas are parallel to each other but perpendicular to longitudinal axis of the transmit patch antenna and the first planar substrate is arranged substantially parallel with the second planar substrate; and an amplifier circuit electrically coupled between the receive antenna assembly and the transmit patch antenna. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Specification