Abstract: The present application discloses various implementations of an antenna configured for use in a wireless transmitter, receiver, or transceiver. In one exemplary implementation, a wireless transmitter includes the antenna configured to be connected to the wireless transmitter. The antenna includes first and second substantially concentric pluralities of antenna elements, the second plurality of antenna elements being rotated with respect to the first plurality of antenna elements. The antenna is configured to enable the wireless transmitter to transmit a communication signal.

Abstract: The present application discloses various implementations of an antenna configured for use in a wireless transmitter, receiver, or transceiver. In one exemplary implementation, a wireless transmitter includes the antenna configured to be connected to the wireless transmitter. The antenna includes first and second substantially concentric pluralities of antenna elements, the second plurality of antenna elements being rotated with respect to the first plurality of antenna elements. The antenna is configured to enable the wireless transmitter to transmit a communication signal.

Abstract: According to one exemplary embodiment, a method for producing an up-converted and amplified transmission signal comprises performing a logarithmic transformation of an input transmission signal to form a logarithmically transformed transmission signal, adding the logarithmically transformed transmission signal to a logarithmic local oscillator signal to form a sum signal, and performing an antilogarithmic transformation of the sum signal to produce the up-converted and amplified transmission signal. In one embodiment, a log-antilog circuit for producing an up-converted and an amplified transmission signal comprises a transmission log block configured to receive an input transmission signal and to provide a logarithmically transformed transmission signal as a transmission log block output, and an antilog block coupled to the transmission log block. The antilog block is configured to receive a sum signal of the transmission log block output and a logarithmic local oscillator signal.

Abstract: Multiple input, multiple output (MIMO) communication systems and a method using multimode media are provided. A MIMO communication system includes an array of emitters that receives a data signal and outputs a plurality of signals (e.g., modulated light, or other signal types) representative of the data signal, a multimode medium (e.g., a multimode fiber, a fiber bundle, a bundle of cables) that receives the plurality of signals from the array of emitters and carries the plurality of signals in a plurality of modes, and an array of detectors that receives the plurality of signals carried by the multimode medium and outputs the data signal. The system can include a demultiplexer that demultiplexes a single high-speed data stream into the array of emitters as the data signal. The system can also include a multiplexer that multiplexes the data signal from the array of detectors back into the single high-speed data stream.

Abstract: According to one exemplary embodiment, a method for producing an up-converted and amplified transmission signal comprises performing a logarithmic transformation of an input transmission signal to form a logarithmically transformed transmission signal, adding the logarithmically transformed transmission signal to a logarithmic local oscillator signal to form a sum signal, and performing an antilogarithmic transformation of the sum signal to produce the up-converted and amplified transmission signal. In one embodiment, a log-antilog circuit for producing an up-converted and an amplified transmission signal comprises a transmission log block configured to receive an input transmission signal and to provide a logarithmically transformed transmission signal as a transmission log block output, and an antilog block coupled to the transmission log block. The antilog block is configured to receive a sum signal of the transmission log block output and a logarithmic local oscillator signal.

Abstract: According to one exemplary embodiment, a method for producing an up-converted and amplified transmission signal comprises performing a logarithmic transformation of an input transmission signal to form a logarithmically transformed transmission signal, adding the logarithmically transformed transmission signal to a logarithmic local oscillator signal to form a sum signal, and performing an antilogarithmic transformation of the sum signal to produce the up-converted and amplified transmission signal. In one embodiment, a log-antilog circuit for producing an up-converted and an amplified transmission signal comprises a transmission log block configured to receive an input transmission signal and to provide a logarithmically transformed transmission signal as a transmission log block output, and an antilog block coupled to the transmission log block. The antilog block is configured to receive a sum signal of the transmission log block output and a logarithmic local oscillator signal.

Abstract: According to one exemplary embodiment, a method for producing frequency conversion of a communication signal comprises performing a logarithmic transformation of the communication signal to form a logarithmically transformed communication signal, adding the logarithmically transformed communication signal to a logarithmic local oscillator signal, to form a sum signal, and performing an anti-logarithmic transformation of the sum signal. In one embodiment, the method may be used to down-convert a reception signal to baseband. In one embodiment, a log-antilog mixer circuit for producing frequency conversion of a communication signal comprises a signal log block configured to receive the communication signal as an input and to provide a logarithmically transformed communication signal as an output, and an antilog block configured to receive a sum signal of the logarithmically transformed communication signal and a logarithmic local oscillator signal.

Abstract: Multiple input, multiple output (MIMO) communication systems and a method using multimode media are provided. A MIMO communication system includes an array of emitters that receives a data signal and outputs a plurality of signals (e.g., modulated light, or other signal types) representative of the data signal, a multimode medium (e.g., a multimode fiber, a fiber bundle, a bundle of cables) that receives the plurality of signals from the array of emitters and carries the plurality of signals in a plurality of modes, and an array of detectors that receives the plurality of signals carried by the multimode medium and outputs the data signal. The system can include a demultiplexer that demultiplexes a single high-speed data stream into the array of emitters as the data signal. The system can also include a multiplexer that multiplexes the data signal from the array of detectors back into the single high-speed data stream.

Abstract: According to one exemplary embodiment, a method for producing an up-converted and amplified transmission signal comprises performing a logarithmic transformation of an input transmission signal to form a logarithmically transformed transmission signal, adding the logarithmically transformed transmission signal to a logarithmic local oscillator signal to form a sum signal, and performing an antilogarithmic transformation of the sum signal to produce the up-converted and amplified transmission signal. In one embodiment, a log-antilog circuit for producing an up-converted and an amplified transmission signal comprises a transmission log block configured to receive an input transmission signal and to provide a logarithmically transformed transmission signal as a transmission log block output, and an antilog block coupled to the transmission log block. The antilog block is configured to receive a sum signal of the transmission log block output and a logarithmic local oscillator signal.

Abstract: According to one exemplary embodiment, a method for producing frequency conversion of a communication signal comprises performing a logarithmic transformation of the communication signal to form a logarithmically transformed communication signal, adding the logarithmically transformed communication signal to a logarithmic local oscillator signal, to form a sum signal, and performing an anti-logarithmic transformation of the sum signal. In one embodiment, the method may be used to down-convert a reception signal to baseband. In one embodiment, a log-antilog mixer circuit for producing frequency conversion of a communication signal comprises a signal log block configured to receive the communication signal as an input and to provide a logarithmically transformed communication signal as an output, and an antilog block configured to receive a sum signal of the logarithmically transformed communication signal and a logarithmic local oscillator signal.

Abstract: A cellular pleated shade material is provided for cellular pleated shades. Each pleat thereof is formed from a single strip of shade material which is folded longitudinally in half, and the edges thereof are glued together to form a fin. The side of one cell is affixed to the side of the next adjacent cell adjacent the centerline of the sides. The ratio of cell height to cell width may be varied, without affecting the overall aesthetic presentation of the shade, by varying the size of the fin.

Abstract: A cellular pleated shade material is provided for cellular pleated shades. Each pleat thereof is formed from a single strip of shade material which is folded longitudinally in half, and the edges thereof are glued together to form a fin. The side of one cell is affixed to the side of the next adjacent cell adjacent the centerline of the sides. The ratio of cell height to cell width may be varied, without affecting the overall aesthetic presentation of the shade, by varying the size of the fin.