Millimeter Wave Source Module Interface
A major design consi derail or for HP's millimeter-wave source modules was the user Interface In operation the modules are to be functionally transparent to the user. Frequency, power, and modulation control oi the modules via the front panel of the source driver was a primary design requirement. As many of these features as possible are made available to owners of existing HP microwave sources, yet the Interface architecture is sufficiently general to support future expansion of the remote...
Adapting UNIX Logon Mechanisms to Automation Applications
Although originally intended for software development and document preparation, the utilities provided by the UNIX operating system can be adapted in various ways for use by novice operators in an automated environment. THE CURRENT TRENDS toward computer-enriched environments and standardized computer systems invite the use of the UNIX* operating system in the service, office, and manufacturing automation domains. Applications such as telemarketing, data base management, and integrated...
Millimeter Wave Detectors Extend Range of Scalar Network Analyzer
HEWLETT-PACKARD'S new family of millimeter-wave detectors designed specifically for use with the HP 8757A Scalar Network Analyzer1 extends the capabilities of this instrument for miIlimeter-wave system measurements. These detectors operate in both modulated ac) and unmodulated dc) modes for optimum performance in various measurement configurations. The unmodulated mode is particularly beneficial in millimeter-wave measurements, because the source does not need to include an accurate modulator....
HztoGHz Amplifier
HP's millimeter-wave source program relies upon an interface to a high-power 2-to-20-GHz source A hybrid microwave amplifier provides this power as the outpul amplifier in the HP 83550A RF Plug-in and is also available as the stand-alone HP 8349B Microwave Amplifier For those users who want to upgrade their existing sources with millimeter-wave capability, the HP 8349B Amplifier provides RF and dc power to HP's millimeter-wave source modules. Power can be leveled at either the output of the...
A MHz Bit Digitalto Analog Converter System
Advanced IC DAC technology and a system design approach were needed to achieve the performance of the HP 8770A Arbitrary Waveform Synthesizer. by Wrlfredo T. Sagun, Fred H. Ives, Gary L. Baldwin, and Thomas Hornak THE FINAL HIGH-SPEED CONVERSION of digital data to the analog output signal in the HP 8770A Arbitrary Waveform Synthesizer is done in a custom ceramic microcircuit followed by a filter and amplifiers. The underlying design goal for these circuits was to achieve precision and...
High Power Microwave Source for Millimeter Wave Generation
This plug-in can serve directly as a high-power 8-to-20-GHz source or as a driver for a family of millimeter-wave sources. by Alan R. Bloom, Roger R. Graeber, Kenneth A. Rrchter, Andrew N. Smith, and Ronald T. Yamada THE HP 83550 A RF PLUG-IN for the HP 83511B Sweep Oscillator was conceived as a low-cost microwave driver for the HP 8355x family of millimeter-wave source modules. The HP 83550A also functions well as a stand-alone high-power 8-to-20-GHz source. Incorporating this dual personality...
Wi
W- and source HP 85 WOW performance 8510 millimeter-wave system cover the frequency range up to t gt 0 GHz. However, to cover the V and IV bands, new source modules had to be developed. A constraint on these V and IV-band multipliers is that the available input frequency is less than 20 GHz. Thus a quintupler circuit is required. Since no directional detector is required for the HP 0510 millimeter-wave system, the UP B510GV W Source Modules deliver unleveled output power to the HP 8510...
Design and Performance of Millimeter Wave Thermocouple Sensors
WITH THE INCREASE in design activity in the 33-to-50-GHz frequency range, Hewlett-Packard wanted to extend HP's power measurements into this millimeter-wave frequency range. The HP Q848GA and HP R8486A Power Sensors shown in Fig. 1 incorporate a special method that inserts a 50-MHz calibrating signal into the waveguide. The HP Q.R8486A sensors have the same 50-ohm thermocouple used by HP's lower-frequency coaxial power mounts and share the same one-microwatt-to-100-milliwatt power range, low...
Improvement is possible if scheduling is regarded as a process subject to continuous measurement
PRODUCT DEVELOPMENT TEAMS at Hewlett-Packard typically commit to a project completion date at the conclusion of requirements definition, just before implementation. Meeting the commitment date has been a perennial challenge, particularly for software engineering teams. Last year, the Roseville Networks Division R amp D laboratory began a major campaign to improve the accuracy of project schedules. Key to the effort is view of scheduling as an ongoing process subject to continuous, objective...
Info
HP 11970 1 HP 365A fit I P 36 Fig. 1. Millimeter-wave vector network analyzer system block diagram. insertion of the device under test. A low-pass filter with a cutoff frequency just above the upper band edge can be used in front of the mixer if desired and will help reduce the unwanted harmonics generated by the harmonic mixer. It has been found, however, that good performance can be obtained in the bands above 40 GHz without the filter. The HP 8510B provides the user interface for the system,...
An Arbitrary Waveform Synthesizer for DC to MHz
Precision, flexibility, and repeatability of signals are ensured by a digital architecture. Two or more synthesizers can be synchronized to provide several sources of complex signals with an identical time reference. by Roland Hassun and Albert W. Kovalick ANALOG SIGNAL SYNTHESIZERS have been used for years in commurtication radar, and generalpurpose testing. The output of these synthesizers is usually a carrier with simple amplitude, frequency, or phase modulation. This is adequate for many...
