Orion-I Microwave PLL Support Page

Orion-I, revC

This page provides support information for the Orion-I PLL Synthesizer Project:

35-4400 MHz, +15 dBm, P/N better than -95 dBc/Hz (Fc = 500 MHz, Measured at Fc+10KHz).

The Orion-I PLL is based on the Analog Devices ADF-4351 PLL with integrated VCO. This device has a number of control options that are accessed via an SPI serial interface. While very flexible, it requires some research on the part of the user to fully exploit all of the features. The information presented herein is intended to provide basic support for frequency and output level selection.

While software skills and tools are not required, the Software link below provides instructions to obtain the source code for this project. Links to the tools needed to compile and program the 8051 microcontroller used to control the PLL chip are provided below.

Orion Availability

The Orion-I revision C is now shipping as a partial kit*.

Here is a description of the Orion kit deliverables. Note: Rev B is a prototype run and will not be offered to the general public.

* - Partial Kit means that the top-side SMD parts are all pre-assembled. The kit-builder places and solders the bottom-side SMD parts (of which there are 8 or so) and the top-side thru-hole parts and edge-launch SMA connectors.

2016 Austin Summerfest Presentation Info

(Yet Another) Universal Phase Locked Loop

Gives an overview and history of the Orion-I design.

Design and Build Info


Software Source/Object Code

SiLabs compiler downloads can be found at http://www.silabs.com/products/mcu/Pages/8-bit-microcontroller-software.aspx
Follow SiLabs instructions to download and install Keil compiler, ConfigWizard, and debug adapter drivers.
USB debug adapter part number: DEBUGADPTR1-USB (about $35, availabile from Mouser and DigiKey).

Manuals and Workbooks

Orion revision history

Orion Assembly and Operation Manual

Channel Programming Spreadsheet, V1.3 (Microsoft Excel, 2013 or later)

Operating Manual for the Morse ID Beacon software

Beacon Message Programming Spreadsheet, V1.1 (Microsoft Excel, 2013 or later)

Orion-I, Rev C Project Results Slideshow (7/1/17)

Updated 07/14/2017 Copyright © 2017 by Joe Haas (KE0FF), all rights reserved.

Orion-I Previous Revision Info

Orion-I, revB

Orion-I, revA

Legacy Operating Manual