The following operators can be used to better focus your queries.
( ) , AND, OR, NOT, W/#
? single char wildcard, not at start
* multi char wildcard, not at start
(Cat? OR feline) AND NOT dog?
Cat? W/5 behavior
(Cat? OR feline) AND traits
Cat AND charact*
This guide provides a more detailed description of the syntax that is supported along with examples.
This search box also supports the look-up of an IP.com Digital Signature (also referred to as Fingerprint); enter the 72-, 48-, or 32-character code to retrieve details of the associated file or submission.
Concept Search - What can I type?
For a concept search, you can enter phrases, sentences, or full paragraphs in English. For example, copy and paste the abstract of a patent application or paragraphs from an article.
Concept search eliminates the need for complex Boolean syntax to inform retrieval. Our Semantic Gist engine uses advanced cognitive semantic analysis to extract the meaning of data. This reduces the chances of missing valuable information, that may result from traditional keyword searching.
This article relates to a high performance long-line receiver circuit incorporating Josephson technology which has wider margins than known receiver circuits.
English (United States)
This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately
55% of the total text.
Page 1 of 2
High Performance Long-Line Receiver Circuit
This article relates to a high performance long-line receiver circuit
incorporating Josephson technology which has wider margins than known
Fig. 1 shows a schematic of a high performance receiver circuit 1 which
includes a Josephson device Q1 shunted by a load impedance RL and a
transformer winding 2 disposed in series with impedance RL. Winding 2 is AC
coupled to another winding 3. The latter is disposed in series with a Josephson
device J and a control line portion 4. All of these elements are disposed in
parallel with a resistance R, and the parallel combination is fed with a current Ic
from a transmission line 5 which is itself terminated with an impedance Zo.
Device Q1 is fed with gate current Ig from a source of constant current via an
In operation, as control current Ic rises, it switches device Q1 to the voltage
state. The thus diverted gate current Ig now flows in load RL and winding 2 and
is AC coupled back via winding 3 to induce a current which will switch device J,
dropping control current in control line portion 4 of device Q1 to almost zero. The
loop containing device J and resistance R does not hang up on a resonance
current peak. Any crosstalk generated will preferentially go through resistance R,
making device Q1 immune from switching when its supply current Ig reverses
A direct-coupled version which eliminates the crossing inductance of Fig. 1 is