Combination of steering antennas, CPL antenna(s), and one or more receive logarithmic detector amplifiers for SISO and MIMO applications
First Claim
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1. An antenna system for wireless transmission, comprising:
- an antenna; and
a logarithmic detector amplifier (LDA) connected to the antenna configured to cancel radio interference in transmission data received or transmitted by the antenna, the LDA comprising;
an amplifying circuit having an input port, and configured to receive, at the input port, an input signal having a first frequency and to generate an oscillation based on the input signal;
one or more resonant circuits coupled to the amplifying circuit and configured to establish a frequency of operation of the system and to generate, at a first output port, a first output signal having a second frequency, the second frequency being substantially the same as the first frequency; and
a controller circuit connected to the amplifier input and configured to cyclically terminate oscillation of the input signal each time a pre-determined threshold of voltage is detected, the controller circuit including a low pass filter configured to generate, at a second output port, a second output signal having a repetition frequency at a third frequency,wherein the antenna is coupled to the input port of the amplifying circuit and is configured to transmit a first transmit signal, and wherein the first transmit signal is amplified by the LDA operating in a reverse mode.
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Abstract
Logarithmic Detector Amplifiers (LDAs), multiple antennas, active antennas, and multiple active antennas and receivers are provided in a variety of configurations that are synchronized to reduce or eliminate interference so at to provide, a greater range and bandwidth between wireless routers and their clients in WLAN and WAN environments.
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Citations
48 Claims
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1. An antenna system for wireless transmission, comprising:
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an antenna; and a logarithmic detector amplifier (LDA) connected to the antenna configured to cancel radio interference in transmission data received or transmitted by the antenna, the LDA comprising; an amplifying circuit having an input port, and configured to receive, at the input port, an input signal having a first frequency and to generate an oscillation based on the input signal; one or more resonant circuits coupled to the amplifying circuit and configured to establish a frequency of operation of the system and to generate, at a first output port, a first output signal having a second frequency, the second frequency being substantially the same as the first frequency; and a controller circuit connected to the amplifier input and configured to cyclically terminate oscillation of the input signal each time a pre-determined threshold of voltage is detected, the controller circuit including a low pass filter configured to generate, at a second output port, a second output signal having a repetition frequency at a third frequency, wherein the antenna is coupled to the input port of the amplifying circuit and is configured to transmit a first transmit signal, and wherein the first transmit signal is amplified by the LDA operating in a reverse mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A radio frequency (RF) front end
comprising: -
a logarithmic detector amplifier (LDA) comprising; an amplifying circuit having an input port, and configured to receive, at the input port, an input signal having a first frequency and to generate an oscillation based on the input signal; one or more resonant circuits coupled to the amplifying circuit and configured to establish a frequency of operation of the system and to generate, at a first output port, a first output signal having a second frequency, the second frequency being substantially the same as the first frequency; and a controller circuit connected to the amplifier input and configured to cyclically terminate oscillation of the input signal each time a pre-determined threshold of voltage is detected, the controller circuit including a low pass filter configured to generate, at a second output port, a second output signal having a repetition frequency at a third frequency; and an antenna coupled to the input port of the LDA, wherein the first output port of the LDA is configured to receive a second input signal having a fourth frequency, wherein the LDA is configured to amplify the second input signal to output a first transmit signal having a fifth frequency at the input port along a transmit path, wherein the fifth frequency is substantially the same as the fourth frequency; and wherein the antenna is configured to receive the input signal, and the LDA is configured to amplify the input signal received at the input port to output a first received signal at the second output port along a receive path. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47)
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48. A radio frequency (RF) front end comprising:
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a logarithmic detector amplifier (LDA) comprising; an amplifying circuit having an input port, and configured to receive, at the input port, an input signal having a first frequency and to generate an oscillation based on the input signal; one or more resonant circuits coupled to the amplifying circuit and configured to establish a frequency of operation of the system and to generate, at a first output port, a first output signal having a second frequency, the second frequency being substantially the same as the first frequency; and a controller circuit connected to the amplifier input and configured to cyclically terminate oscillation of the input signal each time a pre-determined threshold of voltage is detected, the controller circuit including a low pass filter configured to generate, at a second output port, a second output signal having a repetition frequency at a third frequency; a first antenna coupled to the first output port of the LDA, wherein the first output port of the LDA is configured to receive a second input signal, wherein the LDA is configured to amplify the second input signal to output a first receive signal at the input port along a first receive path, and wherein the LDA is configured to amplify the input signal to output and transmit the first output signal using the first antenna along a first transmit path; and a second antenna coupled to the second output port of the LDA, wherein the second output port of the LDA is configured to receive a third input signal, wherein the LDA is configured to amplify the third input signal to output a second receive signal at the input port along a second receive path, and wherein the LDA is configured to amplify the input signal to output and transmit the first output signal using the second antenna along a second transmit path.
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Specification