FUNCTIONAL

RF DECK

DESCRIPTION

ASSEMBLIES

RF Deck Con- All 682XXB/683XXB RF deck assemblies contain a 2

figurations to 20 GHz YIG-tuned oscillator, a switched filter as- sembly, and a directional coupler. Beyond that, the configuration of the RF deck assembly varies accord- ing to the particular instrument model. Block dia- grams of the various RF deck configurations are shown in the following figures:

Figure 2-4, page 2-21, is a block diagram of the RF deck assembly for all ￿40 GHz models ex- cept for 682X5B/683X5B models.

Figure 2-5, page 2-22, is a block diagram of the RF deck assembly for all >40 GHz models ex- cept for 682X5B/683X5B models.

Figure 2-6, page 2-27, is a block diagram of the RF deck assembly for all ￿40 GHz 682X5B/

q683X5B models.

Figure 2-7, page 2-28, is a block diagram of the RF deck assembly for all >40 GHz 682X5B/ 683X5B models.

The block diagram of the RF deck shown in Figure 2-4 (page 2-21) includes all of the common RF com- ponents found in the 682XXB/683XXB RF deck as- semblies. Refer to this block diagram during the descriptions of RF deck operation presented in the following paragraphs.

YIG-tunedThe 2 to 20 GHz YIG-tuned oscillator actually con-

Oscillator tains two oscillators—one covering the frequency range of 2 to 8.4 GHz and one covering the fre- quency range of 8.4 to 20 GHz. Both oscillators use a common internal amplifier.

The YIG-tuned oscillator generates RF output sig- nals that have low broadband noise and low spuri- ous content. It is driven by the Main tuning coil current and bias voltages from the A13 YIG Driver PCB and the FM tuning coil current from the A11 FM PCB. During CW mode, the main tuning coil current tunes the oscillator to within a few mega- hertz of the final output frequency. The phase-lock circuitry of the YIG loop then fine adjusts the oscil- lator’s FM tuning coil current to make the output frequency exact. Frequency modulation of the RF output is also accomplished by summing the modu- lating signal into the oscillator’s FM tuning coil con- trol path.

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682XXB/683XXB MM

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Anritsu manual RF Deck Con- All 682XXB/683XXB RF deck assemblies contain a

682XXB, 683XXB specifications

The Anritsu 683XXB and 682XXB series are advanced vector network analyzers (VNAs) renowned for their precision and versatility in characterizing RF and microwave components. Designed for engineers and technicians involved in the development, manufacturing, and testing of high-frequency devices, these analyzers offer state-of-the-art technology that ensures optimal performance in various applications.

One of the hallmark features of the Anritsu 683XXB and 682XXB is their high dynamic range, which allows for accurate measurements of small reflection and transmission coefficients, essential for assessing the performance of complex RF structures. With frequency coverage extending from DC to 70 GHz, these analyzers cater to a broad spectrum of applications, making them suitable for industries such as telecommunications, aerospace, and automotive.

The user-friendly interface of the Anritsu VNAs is complemented by a high-resolution display, which facilitates easy navigation through measurement setups and results. The analyzers feature multiple measurement modes, including S-parameter measurements, time-domain analysis, and noise figure measurements, providing engineers with comprehensive tools for device characterization.

Both the 683XXB and 682XXB implement advanced calibration techniques, including automated calibration and error correction methods, to enhance measurement accuracy. These methods significantly reduce the uncertainties associated with test setups, enabling reliable performance evaluations of components like filters, amplifiers, and antennas.

Anritsu’s proprietary technologies, such as the VectorStar and ShockLine series integration, further empower the 683XXB and 682XXB models. These technologies enable high-throughput testing and improved measurement stability, addressing the needs of modern production environments that demand rapid turnaround times without sacrificing precision.

Additionally, the analyzers come equipped with various connectivity options, including USB, LAN, and GPIB, ensuring seamless integration into automated test systems. This adaptability enhances the analyzers' utility in both laboratory settings and field operations.

In conclusion, the Anritsu 683XXB and 682XXB series vector network analyzers represent the pinnacle of RF and microwave testing technology. With their unmatched precision, comprehensive measurement capabilities, and advanced calibration techniques, these instruments are indispensable tools for professionals striving to push the boundaries of high-frequency device performance and reliability.