US3943450A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency converting device for RF signals
Assignee: Siemens AG
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Filing: 1974-08-19
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Granted: 1976-03-09
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Expires: 1994-08-19
Abstract
Abstract A frequency converting or mixing device for a receiver, particularly employing hollow conductor or micro strip techniques, including signal and oscillator input means, a diode as a non-linear element, an intermediate frequency output and two stub circuits at the signal input side of the diode, at a mutual distance of approximately one-fourth signal input wave length, for effecting a blocking of currents, of the second harmonic of the oscillator frequency and the summation frequency of the signal input frequency and oscillator frequency, at the diode.
Inventors
- 👤 Klaus Otremba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:48
CPC Classifications
F; F16; F16B; F16B7/00; H; H03; H03D; H03D7/00; H03D7/02; H03D9/00; H03D9/06; H03D9/0608; H03D9/0633; H03D9/0641; H03D2200/00; H03D2200/0001; H03D2200/0003; H03D2200/0017; H03D2200/0023; H03D7/14; H03D7/1408
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
137 words
In a frequency converting device for a receiver, particularly in hollow conductor, strip line and micro strip techniques, including signal and oscillator input means, a diode as a non-linear element, an input line connecting said input means and said diode, an intermediate frequency output, and blocking circuits in the proximity of the diode for oscillations of the second harmonic of the oscillator frequency as well as the summation frequency of the oscillator frequency and the signal frequency, said blocking circuits comprising a pair of filter elements, each having a length of approximately (λ/4) connected to the input line, said elements being spaced a distance of approximately (λ/4) apart, for effecting a current blockage of currents of the second harmonic of the oscillator frequency and the summation frequency of the signal frequency and oscillator frequency, at the diode.
Claim 2
Dependent Claim
137 words
In a frequency converting device for a receiver, particularly in hollow conductor, strip line and micro strip techniques, including signal and oscillator input means, a diode as a non-linear element, an input line connecting said input means and said diode, an intermediate frequency output, and blocking circuits in the proximity of the diode for oscillations of the second harmonic of the oscillator frequency as well as the summation frequency of the oscillator frequency and the signal frequency, said blocking circuits comprising a pair of filter elements, each having a length of approximately (λ/4) connected to the input line, said elements being spaced a distance of approximately (λ/4) apart, for effecting a current blockage of currents of the second harmonic of the oscillator frequency and the summation frequency of the signal frequency and oscillator frequency, at the diode.
Claim 3
Dependent Claim
88 words
A frequency converting device according to claim 1, for a receiver fabricated in hollow conductor technique, in which the diode is inserted into a coaxial line section arranged transverse to the hollow conductor, wherein said filter elements are in the form of two radially extending lines disposed on the signal input side of the diode, said lines each having a radial length of approximately (λ/4), one of such lines being disposed directly at the diode and the second at a distance of approximately (λ/4) from the first line.
Claim 4
Dependent Claim
39 words
A frequency converting device according to claim 2, wherein the radial lines comprising the filter circuits have dimensions such that the current interruption resulting from such filter circuits for the respective frequencies is achieved over a greater frequency range.
Claim 5
Dependent Claim
69 words
A frequency converting device according to claim 1, for a receiver in strip line technique, in which the diode is inserted into a laminated circuit board, wherein said filter elements are designed as two stub lines each approximately (λ/4) in length, disposed on the signal input side of the diode at a distance of approximately (λ/4) from the diode and the distance between the two lines being approximately (λ/4).
Claim 6
Dependent Claim
39 words
A frequency converting device according to claim 4, wherein the stub lines comprising the filter circuits have dimensions such that the current interruption resulting from such filter circuits for the respective frequencies is achieved over a greater frequency range.
Claim 7
Dependent Claim
119 words
A frequency converting device according to claim 1, for a receiver, in micro strip technique, comprising a hybrid signal ring as a coupling element, having two oppositely disposed inputs to which the input signal and the oscillator frequency are respectively connected, and having two oppositely disposed outputs to which are connected respective line branches, each branch contains a said diode and a pair of said filter elements, said diodes being connected in parallel at their output sides, wherein the two blocking filters, in the form of stub lines each having a length of approximately (λ/4), are disposed at the signal input side of the respective diodes, in each case at a distance of approximately (λ/4) from the associated diode.
Claim 8
Dependent Claim
32 words
A frequency converting device according to claim 6, wherein, at the circumference of the signal ring, there are connected stub lines whose lengths are short as compared to the operating wave length.
Claim 9
Dependent Claim
39 words
A frequency converting device according to claim 6, wherein the stub lines comprising the filter circuits have dimensions such that the current interruption resulting from such filter circuits for the respective frequencies is achieved over a greater frequency range.
Claim 10
Dependent Claim
33 words
A frequency converting device according to claim 6, wherein, line sections are located adjacent the line brances containing the diodes, which line sections are provided for the ground lamination and are contacted therewith.
Claim 11
Dependent Claim
32 words
A frequency converting device according to claim 9, wherein, at the circumference of the signal ring, there are connected stub lines whose lengths are short as compared to the operating wave length.
Claim 12
Dependent Claim
31 words
A frequency converting device according to claim 9, wherein said line sections are located opposite the portions of the line branches to which the respective pairs of stub lines are connected.
Claim 13
Dependent Claim
32 words
A frequency converting device according to claim 11, wherein, at the circumference of the signal ring, there are connected stub lines whose lengths are short as compared to the operating wave length.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-09 | 1979-09-08 | 1980-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-09 | 1983-09-08 | 1984-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-09 | 1987-09-08 | 1988-03-09 | $7700.00 | Window Closed / Lapsed |