Archive for July 15, 2018

Five Interesting Things! July 2018

In this episode Shahriar presents 5 interesting things from around the lab! The topics range from optics to microwave components. The video is organized at follows:

00:38 – Pasternak 12GHz-14GHz continuously tuneable 20dB attenuator. How does it work?
11:02 – Ultra-high efficiency triple jacket glass distillation dewar.
14:59 – AWG PLC 8-way WDM splitter on 50GHz channels.
24:15 – PCB embedded D-Band waveguide with Vivaldi launch end-points.
28:45 – Hidden security features of the Canadian currency.

International Microwave Symposium 2018 – Industry Trade Show Overview

In this episode Shahriar presents an overview of a small portion of the vendors present on the exhibition floor at the International Microwave Symposium 2018.

The IEEE MTT International Microwave Symposium (IMS) is the premier annual international meeting for technologists involved in all aspects of microwave theory and practice. It consists of a full week of events, including technical paper presentations, workshops, and tutorials, as well as numerous social events and networking opportunities. The symposium also hosts a large commercial exhibition. Co-located with IMS are the IEEE RFIC, IMBioC and ARFTG conferences.

The video is organized as follows:

00:00:08 – Introductions
00:02:21 – Keysight Technologies (
00:12:25 – Rohde & Schwarz (
00:21:12 – X-Microwave (
00:26:49 – MPI-Corporation (
00:33:34 – Siglent Technologies (
00:36:56 – Signal Hound (
00:40:34 – Mini-Circuits (
00:44:39 – Pico Technology (
00:48:11 – Virginia Diodes Inc. (
00:50:21 – SAF Tehnika (
00:52:28 – LPFK (
00:55:45 – Teledyne Technologies (
00:56:55 – Maury-Microwave (
00:58:20 – Noisecom & Boonton (
01:00:00 – Guzik Technical Enterprises (
01:03:00 – Connectronics Inc. (
01:03:43 – A.J. Tuck Company (
01:04:51 – HyperLabs Inc. (
01:07:15 – Holzworth Instruments (

Teardown & Repair of an Agilent E4440A 3Hz – 26.5GHz PSA Spectrum Analyzer

In this episode Shahriar takes a close look at a defective Agilent E4440A spectrum analyzer. Initial analysis reveals that the startup errors are caused by a defective pre-amplifier module. During initial alignment and calibration, the defective microwave relays inside the pre-amplifier module fail insertion loss specifications and cause alignment failures.

Unfortunately, the relays are not repairable and must be replaced. Two new relays are purchased and replacement clears all alignment issues. The main motherboard battery has also failed; a replacement battery corrects any time and date keeping errors. The repaired instrument is cycled through several alignment procedures without any problems. The performance of the unit is verified by examining the DANL of the instrument with and without the pre-amplifier activated.

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