<i>The AR6A Single-Sideband Microwave Radio System</i>: Microwave Carrier Supply

Gonda, J.; Kiker, J. M.

doi:10.1002/j.1538-7305.1983.tb03479.x

Cited by 2 publications

(2 citation statements)

References 11 publications

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“…The comb generation offered by diode multipliers is often useful in system applications. It offers a compact way to achieve higher order multiplication [11].…”

Section: Frequency Multiplier Topologiesmentioning

confidence: 99%

“…As is apparent from Class J, Class E, and through f0 on the input and Nf0 on the output is always optimal. [11], [25]- [27] Otherwise, optimal terminations may be dependent on biasing [27]. Also, several of these studies were based on FET designs, so conclusions may not directly translate to BJT designs and their unique nonlinear behavior [25], [27].…”

Section: Port Networkmentioning

confidence: 99%

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Very High Frequency Bipolar Junction Transistor Frequency Multiplier Drive Network Design and Analysis

Schaeffer¹

2000

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The function of a frequency multiplier is verbatima frequency multiplier is a circuit that takes a signal of particular frequency at the input and produces harmonic multiples of the input signal's frequency at the output. Their use is widespread throughout history, primarily in the application of frequency synthesis. When implemented as a part of a large system, a chain of multipliers can be used to synthesize multiple reference signals from a single high-performance reference oscillator. Frequency multiplier designs use a variety of nonlinear devices and topologies to achieve excitation of harmonics. This thesis will focus on the design and analysis of single ended bipolar junction transistor frequency multipliers. This topology serves as a relatively simple design that lends itself to analysis of device parasitics and nonlinearities. In addition, design is done in the Very High Frequency (VHF) band of 30-300 MHz to allow for design and measurement freedoms. However, the design methodologies and theory can be frequency scaled as needed. The parasitics and nonlinearities of frequency multipliers are well explored on the output side of circuit design, but literature is lacking in analysis of the drive network. In order to explore device nonlinearities on the drive side of the circuit, this thesis implements novel nonlinear reflectometry systems in both simulations and real-world testing. The simulation nonlinear reflectometry consists of intelligently configured voltage sources, whereas directional couplers allow for real world nonlinear reflectometry measurements. These measurements allow for harmonically rich reflected waveforms to be accurately measured, allowing for waveform engineering to be performed at the drive network. Further, nonlinear reflectometry measurements can be

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“…The comb generation offered by diode multipliers is often useful in system applications. It offers a compact way to achieve higher order multiplication [11].…”

Section: Frequency Multiplier Topologiesmentioning

confidence: 99%

Section: Port Networkmentioning

confidence: 99%

Very High Frequency Bipolar Junction Transistor Frequency Multiplier Drive Network Design and Analysis

Schaeffer¹

2000

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The AR6A Single-Sideband Microwave Radio System: Frequency Control

Kiker

Pirkau

1983

Bell System Technical Journal

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The AR6A Radio System requires precise control of the local oscillator frequency at repeaters and main stations, so that the IF equalizer pilots will be accurately located with respect to the narrowband crystal pick‐off filters. In addition, the accumulated frequency error from each repeater and main station must be limited to a value that can be corrected by the tracking receiver of the multimastergroup terminal. Precise frequency control is maintained along the route by locking local oscillators to a stable and accurate frequency reference provided at each repeater station by the Microwave Carrier Synchronization Supply (MCSS). The MCSS provides a source and a backup for this signal. Extensive monitoring circuitry in the MCSS detects failed conditions. The accuracy of the two oscillators is continuously monitored by making frequency comparisons of their output. These frequency‐monitoring circuits are also used to make yearly adjustments to the oscillators using a rubidium frequency standard as reference. This paper describes the MCSS System that has been developed for the AR6A Radio System.

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The AR6A Single-Sideband Microwave Radio System: Microwave Carrier Supply

Cited by 2 publications

References 11 publications

Very High Frequency Bipolar Junction Transistor Frequency Multiplier Drive Network Design and Analysis

Very High Frequency Bipolar Junction Transistor Frequency Multiplier Drive Network Design and Analysis

The AR6A Single-Sideband Microwave Radio System: Frequency Control

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