A high-speed direct frequency synthesizer

Author

Saul, Peter H. ; Taylor, David G.

Author_Institution

Plessey Res. & Technol., Towcester, UK

Volume

25

Issue

1

fYear

1990

fDate

2/1/1990 12:00:00 AM

Firstpage

215

Lastpage

219

Abstract

A UHF direct frequency synthesizer, which is primarily intended for radar and electronic warfare applications, is described. The device generates square-, sine-, and triangle-wave outputs, true and complement, in-phase and quadrature, over the range 1 Hz to 500 MHz. It is a fully integrated design, including two digital-to-analog converters (DACs), each of which has a faster operating specification than any DAC currently available. The circuit is composed of a number of structured circuit blocks, each of which can be tested independently on the chip. This approach has benefits both during device evaluation and as an aid to minimizing production test times. The chip is implemented in a 1 μm silicon bipolar process

Keywords

bipolar integrated circuits; digital integrated circuits; frequency synthesizers; function generators; 1 micron; 1 to 500 MHz; DAC; EW; Plessey Process HE; Si; UHF; bipolar IC; digital implementation; direct frequency synthesizer; electronic warfare applications; fully integrated design; function generation; high-speed; monolithic type; radar; sinewave output; square-wave output; triangle-wave outputs; Channel spacing; Circuit synthesis; Circuit testing; Clocks; Digital-analog conversion; Electronic warfare; Frequency synthesizers; Phase locked loops; Radar applications; Transistors;

fLanguage

English

Journal_Title

Solid-State Circuits, IEEE Journal of

Publisher

ieee

ISSN

0018-9200

Type

jour

DOI

10.1109/4.50306

Filename

50306