Patent US4098651A successfully refreshed from Google Patents.
Patent EP0470786A2 successfully refreshed from Google Patents.
EP0470786A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Electronic rotatable polarization antenna feed apparatus
Assignee: Individual
•
Filing: 1991-08-05
•
Granted: —
•
Expires: 2011-08-05
Abstract
Abstract Electronically rotatable polarization antenna feed apparatus includes a pair of probes oriented in an orthogonal relationship to each other (90 degrees apart) and the probes extend through the rear wall of a waveguide. The probes are connected through low noise amplifiers to variable resistors or variable gain amplifiers. The signal to noise ratio of the desirable polarization signal from the two probes is maximized and the undesirable polarization signal from the two probes is cancelled. If desired, polarization components from the two probes may be combined so that both the horizontal and the vertical polarization signals may be used simultaneously. The apparatus may be used with linearly polarized signals and with circularly polarized signals.
Inventors
- 👤 Harry J. Gould
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 07:18
CPC Classifications
H; H04; H04B; H04B7/00; H04B7/002; H01; H01Q; H01Q21/00; H01Q21/24; H01Q21/245
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
209 words
Electronically rotatable polarization antenna feed apparatus for receiving polarized radio signals having first components and second components, comprising, in combination: first probe means for receiving the first components of the polarized radio signals; second probe means oriented substantially orthogonal to the first probe means for receiving the second components of the polarized radio signals; first amplifier means connected to the first probe means for amplifying the first components of the polarized radio signals; first variable attenuating means connected to the first amplifier means for attenuating the amplified first components of the polarized radio signals; second amplifier means connected to the second probe means for amplifying the second components of the polarized radio signals; second variable attenuating means connected to the second amplifier means for attenuating the amplified second components of the polarized radio signals; means for adjusting the first and second variable attenuating means to provide the desired amplitude of the amplified first and the second components of the polarized radio signals; delta phase means for providing a desired phase relationship between the first and second components of the polarized radio signals; and power combiner means for combining desired portions of the amplified first and second components to provide a maximum signal to noise ratio of a desired polarization.
Claim 2
Dependent Claim
109 words
Apparatus for receiving polarized radio signal components, including, in combination: first means for receiving first vertical and horizontal components of a polarized radio signal; second means for receiving second vertical and horizontal components of the polarized radio signal; means for amplifying the received first and second vertical and horizontal components; and means for combining the amplified first vertical components from the first means to the amplified second vertical components of the second means to provide a combined vertical output signal and for combining the amplified first horizontal component from the first means to the amplified second horizontal component of the second means to provide a combined horizontal output signal.
Claim 3
Dependent Claim
84 words
Apparatus for receiving polarized radio signals, having first and second components, including, in combination: first means for receiving and amplifying the first components of the polarized radio signals; second means for receiving and amplifying the second components of the polarized radio signals; means for adjusting the amplitude of the amplified first and second components; and means for summing the amplified and amplitude adjusted first and second components to maximize the signal to noise ratio of a desired polarization of the first and second components.
Claim 4
Dependent Claim
152 words
Electronically rotatable polarization antenna feed apparatus for receiving polarized radio signals having first and second components and for maximizing the signal to noise ratio in the signals, comprising, in combination: probe means for receiving the polarized radio signals, including a first probe for receiving the first components of the polarized radio signals, and a second probe for receiving the second components of the polarized radio signals, both first and second components having desired and undesired portions; amplifier means for amplifying the received radio signals, including first amplifier means for amplifying the first components, and second amplifier means for amplifying the second components; delta phase means for providing a desired phase relationship between the first and second components; and combiner means for combining the desired portions of the amplified first and second components having the desired phase relationship to provide a maximum signal to noise ratio of the received and amplified radio signals.
Claim 5
Dependent Claim
29 words
The apparatus of claim 1 or claim 4 in which the delta phase means comprises a minus ninety and a plus ninety degree delta phase section for circular polarization.
Claim 6
Dependent Claim
33 words
The apparatus of claim 1 or claim 4 in which the delta phase means includes a zero and ninety degree delta phase section for selecting a desired one of linear and circular polarization.
Claim 7
Dependent Claim
29 words
The apparatus of claim 1 or claim 4 in which the delta phase means includes a zero and one hundred and eighty degree delta phase section for linear polarizations.
Claim 8
Independent Claim
45 words
The apparatus of any of claims 1,4,5,6 or 7 in which the delta phase means includes a first state and a second state, and switching means for selecting a desired state for receiving the maximum signal to noise ratio of a desired polarized radio signal.
Claim 9
Dependent Claim
207 words
Electronically rotatable polarization antenna feed apparatus for receiving a polarized radio signal having a first component and a second component, comprising, in combination: first probe means for receiving the first component of the polarized radio signal; second probe means oriented substantially orthogonal to the first probe means for receiving the second component of the polarized radio signal; first amplifier means connected to the first probe means for amplifying the first component of the polarized radio signal; first variable attenuating means connected to the first amplifier means for attenuating the amplified first component of the polarized radio signal; second amplifier means connected to the second probe means for amplifying the second component of the polarized radio signal' second variable attenuating means connected to the second amplifier means for attenuating the amplified second component of the polarized radio signal; delta phase means having two states for providing a desired phase relationship between the first and second components; power combining means for combining the first and second amplified and attenuated components; and means for selecting the desired state of the delta phase means and for adjusting the first and second variable attenuating means to provide a maximum signal to noise ratio for the combined components of the polarized radio signal.
Claim 10
Dependent Claim
149 words
Apparatus for receiving a first polarized radio signal and a second polarized radio signal which is substantially orthogonal to the first polarized radio signal, each of which signals have first and second components, comprising, in combination: first means for receiving the first components of the two polarized radio signals; second means for receiving the second components of the two polarized radio signals; means for amplifying the received first and second components of the two radio signals; first means for combining the amplified first and second components of the first radio signal; second means for combining the amplified first and second components of the second radio signal; delta phase means for providing a desired phase relationship between the first and second components; and means for switching the state of the delta phase means to provide a maximum signal to noise ratio of the combined components of the two radio signals.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.