 Piston paint pump filter |
| Referring now to FIGS. 1 and 2, a prior art filter apparatus 10 may be seen. In such a prior art ... |
|
| Method and apparatus of determining location of an unauthorized communication unit |
| OF A PREFERRED EMBODIMENT Generally, the present invention provides a method for detecting the ... |
|
| Brake for manually operable magnetic thickness gauges |
| What is claimed is: 1. An indicator brake for the manually operable actuator of a thickness gauge ... |
|
| Cross polarization compensation system |
| This invention is to provide a cross polarization compensating system which is free from the ... |
|
| Systems for comparing and ranking a plurality of signal inputs |
| A system is provided for comparing the signals from a plurality of sources to a reference signal ... |
|
| Automatic control device for tractor mounted tools |
| A principal object of the present invention is to monitor the position of a tractor mounted tool by ... |
|
| Modified power unit for snow plows |
| The present invention provides a modification applicable to the lift piston-cylinder of a power ... |
|
|
Frequency translator
| Details |
Inventors: Hallford, Ben R.;
Assignee: Rockwell International Corporation (El Segundo, CA)
Primary Examiner: Ng; Jin F.
Assistant Examiner:
Attorney, Agent or Firm: Lutz; Bruce C., Greenberg; Howard R., Hamann; H. Fredrick
A planar balun coupled frequency translator (upconverter or downconverter, is illustrated in various configurations for providing both full-wave and half-wave signal frequency conversion. As illustrated, each of the circuits uses microstrip and strip transmission line construction techniques for cost effective construction. As designed, the carrier and signal frequency baluns are separately interfaced in sets rather than all being connected in series as in the prior art. |
|
DETAILED DESCRIPTION In FIG.
1, a ground plane 10 completely encloses on all four sides a plurality of conductors, balun secondary circuit paths or signal coupling means 12, 14, 16, 18, 20, 22, 24 and 26, each extending from the ground plane 10, connected thereto and in the same planar surface as the ground plane.
Signal coupling means 12 is coupled to a transmission line signal conductor means or balun primary circuit path 28 as are the circuit paths 14, 16 and 18.
Transmission line conductive means 28 receives the signal frequencies (f.
sub.
s) which are supplied to the translator of FIG.
1.
Coupling means 20 is coupled to a carrier frequency (f.
sub.
c) transmission line conductive means or balun primary circuit path 30 as are circuit paths 22, 24 and 26.
The end or terminal of each of the circuit paths 12 through 26 which is furthest from the ground plane connection is additionally labeled with numbers 1 through 8 as illustrated.
As shown, a conductive path 32 connects terminals 1 and 5 of circuit paths 12 and 22 respectively.
At the approximate center of this path is a terminal labeled A to which is connected a D1 diode 34.
The other end of diode 34 is connected to a junction point 36 which receives IF or intermediate frequency signals.
End 4 of circuit path 18 is connected to end 7 of circuit path 20 by a lead or conductive path 38 which has an intermediate terminal labeled D to which a D4 diode 40 is connected whose other lead is connected to junction point 36.
End 2 of circuit path 16 is connected to end 6 of circuit path 26 via a signal conductor 42 which has an intermediate terminal B to which a D2 diode 44 is connected which has its other lead connected to junction point 36.
Finally, a conductive path 46 is used to connect end 3 of circuit path 14 to end 8 of circuit path 24.
An intermediate point C is connected to one end of a diode D3 also designated as 48 which has its other lead connected to junction point 36.
In actual fabrication of the device of FIG.
1, the ground plane 10 along with the signal coupling means would be applied to one side of a substrate or printed circuit board while the transmission line conductive means 28 and 30 would be attached to the opposite side of the substrate
|
| Related patents |
|
|
Carbon electrode, in particular a graphite electrode for producing steel
OF THE PREFERRED EMBODIMENT OF THE PRESENT INVENTION With reference now to FIG. 1, the present invention is thereshown and comprises the electrodes 1, which are held by ...
|
|
|
Stabilizer foot for backhoes and the like
As distinguished from the prior art, this invention provides a foot for the ground-engaging end of a stabilizing support arm in which the pad has a plurality of faces, ...
|
|
|
Knittable yarn and safety apparel made therewith
The present invention provides a high strength, cut resistant, knittable yarn which is superior to prior yarns of the character to which the invention relates. The yarn ...
|
|
|
Emergency medical services system
OF PREFERRED EXAMPLE EMBODIMENTS AND BEST MODE OF THE INVENTION An emergency medical response vest according to the invention is illustrated in FIGS. 1 and 2 with ...
|
|
|
Fingernail protector
The present invention comprises a fingernail protector having a finger support flange, a cylindrical encasement opening by means of a hinge, and a finger support strap ...
|
|
|
Apparatus for discerning the noticeable presence of spatial fluctuations of intensity within a two-dimensional visual field
What is claimed is: 1. In an apparatus comprising signal processing means including detector means for sequentially convolving, with a given kernel function, the ...
|
|
|
Antenna matching system
What is claimed is: 1. In a system for adjusting the impedance of an antenna matching network to match an antenna at a desired carrier frequency in which said system is ...
|
|
|
Intense electron beam microwave switch
OF THE INVENTION Referring to FIG. 1, the switch includes a superconducting resonator 1, such as a lead-plated copper cylindrical resonator, adapted to be pumped to a ...
|
|
|
Single side band multiplex signal radio relay
It is one object of the present invention to provide a radio relay that is free from the aforementioned disadvantages caused by an SSB multiplex signal radio relay ...
|
|
|
Time-period modulation transmission system
In accordance with the present invention, time period modulation (TPM) of a subcarrier is employed, for transmission of a signal on a carrier. This is achieved by ...
|
|
|
Telecommunications 
