FUNCTIONAL

FREQUENCY

DESCRIPTION

SYNTHESIS

requiring even greater stability, the 100 MHz refer- ence oscillator can be phase locked to an optional 10 MHz reference (internal or external).

RF Outputs Refer to the RF Deck block diagram shown in Fig-

0.01to 65 GHz ure 2-1 (page 2-7) for the following description. The 682XXB/683XXB uses one 2 to 20 GHz YIG-tuned oscillator. All other frequencies output by the signal generator are derived from the fundamental fre- quencies generated by this YIG-tuned oscillator.

0.01 to 2 GHz

RF output frequencies of 0.01 to 2 GHz are gener- ated by down converting the fundamental frequen- cies of 6.51 to 8.5 GHz. This is achieved using a

6.5 GHz local oscillator signal that is phase locked to the 500 MHz output of the Reference Loop. Pre- cise control of the 0.01 to 2 GHz frequencies to

1 kHz (0.1 Hz with Option 11) accuracy is accom- plished by phase-lock control of the 6.51 to 8.5 GHz fundamental frequencies prior to down conversion.

20 to 40 GHz

RF output frequencies of 20 to 40 GHz are produced by doubling the 10 to 20 GHz fundamental frequen- cies. Phase-lock control of the 10 to 20 GHz funda- mental frequencies—accomplished prior to doubling —ensures precise control of the 20 to 40 GHz fre- quencies to 1 kHz (0.1 Hz with Option 11) resolu- tion.

40 to 65 GHz

RF output frequencies of 40 to 65 GHz are devel- oped by quadrupling the 10 to 16.25 GHz fundamen- tal frequencies (refer to Figure 2-5, page 2-22). Precise control of the 40 to 65 GHz to 1 kHz (0.1 Hz with Option 11) resolution is achieved by phase-lock control of the 10 to 16.25 GHz fundamental frequen- cies prior to quadrupling.

0.5 to 2.2 GHz

RF output frequencies of 0.5 to 2.2 GHz for the 682X5B/683X5B models are developed by down con- verting the fundamental frequencies of 2 to 4.4 GHz (refer to Figure 2-6, page 2-27). Phase-lock control of the 2 to 4.4 GHz fundamental frequencies, achieved prior to down converting, ensures precise control of the 0.5 to 2.2 GHz frequencies to 1 kHz (0.1 Hz with Option 11) resolution.

682XXB/683XXB MM

2-13

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Anritsu 683XXB, 682XXB manual 01 to 2 GHz, 20 to 40 GHz, 40 to 65 GHz, To 2.2 GHz
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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.
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