GB776098A - Improvements in or relating to frequency mixers - Google Patents
Improvements in or relating to frequency mixersInfo
- Publication number
- GB776098A GB776098A GB13958/55A GB1395855A GB776098A GB 776098 A GB776098 A GB 776098A GB 13958/55 A GB13958/55 A GB 13958/55A GB 1395855 A GB1395855 A GB 1395855A GB 776098 A GB776098 A GB 776098A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fed
- diodes
- line
- guide
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D9/00—Demodulation or transference of modulation of modulated electromagnetic waves
- H03D9/06—Transference of modulation using distributed inductance and capacitance
- H03D9/0608—Transference of modulation using distributed inductance and capacitance by means of diodes
- H03D9/0616—Transference of modulation using distributed inductance and capacitance by means of diodes mounted in a hollow waveguide
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Radar Systems Or Details Thereof (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
776,098. Frequency charging circuits. TELEFONAKTIEBOLAGET L. M. ERICSSON. May 13, 1955 [May 4, 1954], No. 13958/55. Class 40(6) In a frequency changer having two non-linear elements fed with signal and local oscillations, a phase shifting device carrying both oscillations is arranged to connect the two elements so that signals fed to one element are phase shifted by 90 degrees with respect to the signal applied to the other. A signal is fed over line 5, Fig. 6 and local oscillations over line 7 to a diode 1 both oscillations also being fed down line 9 to a second diode 2. The output from the diodes 1, 2 are combined and fed to LF. discharge tube 17. The length of the line between the diodes 1, 2 is chosen to be one-quarter of a wavelength at the signal frequency and the line 9 is continued in a quarter-wave length stub. In a modification Fig. 7 (not shown) the local oscillation is applied to the diode 2 so that the output from diodes 1, 2 differ in phase by 180 degrees, and are combined in a transformer and fed to tube 17. In a modification, Fig. 8 the diodes 1, 2 are arranged in series, the D.C. path from diode 1 being completed over a stub 22 and the output from line 9 being taken through a further stub 21. A wave guide 23 may be employed, Fig. 9 matched by a stub 24 into a guide 9 having an admittance half that of the guide 23. The diodes 1, 2 may be arranged in series, Figs 10a (not shown). The signal and local oscillations are fed in through guide 23 but in a modification Fig. 11, local oscillation is fed in through guide 26, the outputs from diodes 1, 2 being out of phase and combined in transformer 19. For operation at lower frequencies, the signals are fed in over input 5, Fig. 15, filters 29, 30 producing a net phase shift of 90 degrees to the diodes 1, 2. In a modification Fig. 14 (not shown) only one filter is employed.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE776098X | 1954-05-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB776098A true GB776098A (en) | 1957-06-05 |
Family
ID=20333474
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB13958/55A Expired GB776098A (en) | 1954-05-04 | 1955-05-13 | Improvements in or relating to frequency mixers |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB776098A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2417119A1 (en) * | 1978-02-09 | 1979-09-07 | Philips Nv | RADAR DEVICE OPERATING BY DOPPLER EFFECT |
-
1955
- 1955-05-13 GB GB13958/55A patent/GB776098A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2417119A1 (en) * | 1978-02-09 | 1979-09-07 | Philips Nv | RADAR DEVICE OPERATING BY DOPPLER EFFECT |
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