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IMS2011: Agilent demonstrates instruments and software

After focusing on LTE at a Tuesday June 7 press conference , Agilent Technologies highlighted a variety of products and applications on the exhibit floor at IMS2011 .

For example, the company debuted its Model 8990B peak power analyzer, which comes equipped with a 15-in. XGA color touch screen that can simultaneously display two RF channels and two analog channels. Complementing the 8990B are the new N1923A and N1924A wideband power sensors, which cover a frequency range of 50 MHz to 18 GHz and 50 MHz to 40 GHz, respectively. When combined with either sensor, the 8990B peak power analyzer achieves 5-ns rise time/fall time, making it suitable for RF pulse measurement and analysis in military/aerospace and wireless industry segments.

New PNA vector network analyzers

In addition, Agilent introduced five new PNA microwave vector network analyzer models operating up to 67 GHz. The new PNA Series is based on Agilent's PNA-X architecture and can test a variety of passive and active devices, such as filters, duplexers, amplifiers, and frequency converters. The PNAs are available with two-port internal single-source or four-port internal dual-source configuration in five frequency models (13.5, 26.5, 43.5, 50, and 67 GHz), source output power up to +11 dBm at 67 GHz (for the N5227A 67-GHz model), and a 0.1-dB receiver compression point higher than +10 dBm (for all models).

The PNA Series now offers the majority of advanced measurement options currently available on the PNA-X Series, including noise figure measurements, gain compression, two-tone IMD/spectrum analysis, true-mode stimulus, source phase control, and fast CW mode. The PNA family shares a common software platform making it easy to customize for just the right level of performance to meet specific budget and measurement needs. Software options can also be added later to meet future test requirements. The PNA is also compatible with Agilent's Physical Layer Test System, materials measurement software and multiport test sets. PNA Series prices start at $60,000.

Electromagnetic simulation software

Agilent also announced the release of Electromagnetic Professional 2011.07, an electromagnetic modeling and simulation platform that creates 3-D models and analyzes the electrical performance of packages, connectors, antennas, and other RF components.

Get ready for ARISSat-1

Get ready for ARISSat-1

ARISSat-1 is scheduled to be deployed from the ISS this month.

Here are some reminders to help you get your station ready for ARISSat-1 operation.

145.950 MHz FM Downlink:
FM transmissions will cycle between a voice ID as RS01S, select telemetry values, 24 international greeting messages in 15 languages and SSTV images. One of the messages will be a conversation between Yuri Gagarin and ground control. See the next news item for pointers to get your station ready to receive the SSTV images.

435 MHz - 145 MHz Linear Transponder:
The linear transponder will operate in Mode U/V (70 cm Up, 2m Down).
It is an 16 KHz wide inverting passband and the convention will be to TX LSB on the 435 MHz uplink and RX USB on the 145 MHz downlink. This mode is designed to work with low power transmitters and omni antenna.

145.919 MHz/145.939 MHz CW Beacon:
The CW transmissions will be callsign ID RS01S, select telemetry, and callsigns of people actively involved with the ARISS program.

145.920 MHz SSB BPSK-1000 Telemetry:
The BPSK transmissions will feature a new 1kBPSK protocol developed by Phil Karn, KA9Q to be readable in low signal level conditions. The BPSK data will transmit satellite telemetry.

The ARISSat-1 BPSK-1000 downlink is transmitted in SSB mode on 145.920 MHz. When the CW2 beacon on 145.919 MHz is active this indicates that the BPSK-1000 format is being transmitted. If the CW1 beacon on 145.939 MHz is active this indicates the backup of BPSK-400 format is being transmitted.

Transmitting at 100 mW, both BPSK rates include Forward Error Correction (FEC) and it is expected that modest quarter-wave antennas with low-loss coaxial cable will provide sufficient signal strength for decoding and display by the ARISSatTLM software.

An audio feed from an SSB receiver to the computer's soundcard input is needed. An initial "Receive Only" configuration is easily done consisting of an audio patch cable between your radio and the soundcard. Take the speaker or headphone output from the radio and run it into the line (or mic) input on your PC sound card.

BPSK-1000 sounds like a "shusssch" with a higher pitch than the 400 bps growl. It is difficult to tune by ear. The CW2 beacon is used as a tuning signal for BPSK-1000. The PC and Mac ARISSatTLM software display contains a dotted line that you use to tune your receiver until the CW signal bumps lines up with the dotted line on your PC screen. This will allow you to decode the BPSK-1000 signal and you will also be able to copy the CW2 beacon.

Introduction to radar systems

Thus, at the lower range of frequencies (audio or video region), where the doppler frequencies usually are found, the detector of the CW receiver can ...

Electricity and electronics fundamentals

Figure 7-12 shows the input tuner of a CW receiver. In this circuit, L2 is the secondary winding of the antenna transformer; C1, is a variable capacitor. ...

Radar design principles, signal processing and the environment

Since the CW receiver responds to echoes from all ranges, it is generally necessary to separate the leakage or spillover from the transmitter and signals ...

CW and Doppler radar

The second reason why the cw receiver tends to have a working noise figure larger than that of the pulse receiver is bound up with the comparative range ...

Radar signals

10.6 MIXER IMPLEMENTATION OF AN FM CW RADAR RECEIVER The results in preceding sections apply to a matched filter implementation of the receiver. ...

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