http://iet.metastore.ingenta.com
1887

The synthesis of high-purity oscillations suitable for single-sideband receivers

The synthesis of high-purity oscillations suitable for single-sideband receivers

For access to this article, please select a purchase option:

Buy article PDF
$19.95
(plus tax if applicable)
Buy Knowledge Pack
10 articles for $120.00
(plus taxes if applicable)

IET members benefit from discounts to all IET publications and free access to E&T Magazine. If you are an IET member, log in to your account and the discounts will automatically be applied.

Learn more about IET membership 

Recommend Title Publication to library

You must fill out fields marked with: *

Librarian details
Name:*
Email:*
Your details
Name:*
Email:*
Department:*
Why are you recommending this title?
Select reason:
 
 
 
 
 
Journal of the British Institution of Radio Engineers — Recommend this title to your library

Thank you

Your recommendation has been sent to your librarian.

An oscillator is controlled by a phase locked loop, its output frequency being mixed with a selected part of a 100 kc/s spectrum to form an i.f. in the 900–1000 kc/s region. This i.f. feeds one side of a phase detector, the other side being fed by an interpolating signal. The latter may be derived either by another similar stage operating at a lower frequency, or by any other suitable method, the required purity in this signal being only of the order of 40 dB. The a.p.c. loop will lock when the i.f. and the interpolating frequency are the same. In the locked condition an additional filter is switched into the loop by means of a quadrature phase detector, and this filter reduces the amplitude of spurious frequencies and noise in the output. The paper discusses factors affecting the resultant purity.

http://iet.metastore.ingenta.com/content/journals/10.1049/jbire.1961.0030
Loading

Related content

content/journals/10.1049/jbire.1961.0030
pub_keyword,iet_inspecKeyword,pub_concept
6
6
Loading
This is a required field
Please enter a valid email address