An efficient Schottky-varactor frequency multiplier at millimeter waves. Part III. Quadrupler

Tolmunen, Timo J.; R�is�nen, Antti V.

doi:10.1007/bf01013410

Cited by 6 publications

(3 citation statements)

References 8 publications

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“…Emphasis was placed on the study of optimum idlers at the 2nd and 3rd harmonics. While the highest efficiency obtained prior to this experimentally from quadruplers at mm-waves was only a few percent [3], our analyses [4] show that theoretically over 50 % efficiency is obtainable when a commercially available varactor is used (VD010 Farran Technology).…”

Section: Experimental Multipliers Quadrupler For 140-150 Ghzmentioning

confidence: 70%

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Comparison of Higher-Order Multipliers to Cascaded Doublers and Triplers in Submillimeter Signal Generation

Sironen¹,

Tolmunen²,

Räisänen³

1989

19th European Microwave Conference, 1989

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A theoretical study using a full nonlinear analysis has been carried out on the feasibility of producing local oscillator power at frequencies 300-600 GHz by using Schottky-diode frequency multipliers. Solid state local oscillators are needed for space born radiotelescopes planned for operation in the beginning of the next century. A comparison has been made between the efficiencies of higher-order multipliers anrd cascaded doublers and triplers. In order to get experimental background for those theoretical studies a quadrupler for 140 GHz, a quintupler for 170 GHz and a doubler for 180 GHz were analyzed both theoretically and experimentally.

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Section: Experimental Multipliers Quadrupler For 140-150 Ghzmentioning

confidence: 70%

“…This quadrupler has been tested with different output configurations [4]. As shown in the Figure 1 the highest efficiency obtained was 11.3 % at 148 GHz with an input power level of 10 mW.…”

Section: Experimental Multipliers Quadrupler For 140-150 Ghzmentioning

confidence: 99%

Comparison of Higher-Order Multipliers to Cascaded Doublers and Triplers in Submillimeter Signal Generation

Sironen¹,

Tolmunen²,

Räisänen³

1989

19th European Microwave Conference, 1989

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show abstract

“…A simplified equivalent circuit of a QW diode oscillator is shown in Figure 2. When the oscillator starts oscillating, the voltage amplitude AV,,,, will increase and the effective negative conductance lGdl will decrease until the requirements of the oscillator are satisfied, i.e., AVO,, will adjust itself so that (see [6] and Figure 2 ) (1 -Vl -(2(R, + R,) (0 C,,]').…”

Section: Device Properties and Oscillator Analysismentioning

confidence: 99%

Capability of schottky‐diode multipliers as local oscillators at 1 THz

Räisänen¹,

Sironen²

1991

Micro & Optical Tech Letters

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Extensive studies on the theoretical performance of Schonky‐varactors and varistors as multipliers of a frequency around 100 GHz to the submillimeter region (400‐1200 GHz) in various direct and cascaded configurations have been carried out using harmonic balance analysis. Because of high circuit losses (≥10 dB) in a multiplier chain producing 1 THz, the output power seems to stay at or below 100 μW even in the best multiplier configurations when the available input power at 100 GHz is 50 mW.

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An efficient Schottky-varactor frequency multiplier at millimeter waves. Part IV. Quintupler

Tolmunen¹,

R�is�nen²

1989

Int J Infrared Milli Waves

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An efficient Schottky-varactor frequency multiplier at millimeter waves. Part III. Quadrupler

Cited by 6 publications

References 8 publications

Comparison of Higher-Order Multipliers to Cascaded Doublers and Triplers in Submillimeter Signal Generation

Comparison of Higher-Order Multipliers to Cascaded Doublers and Triplers in Submillimeter Signal Generation

Capability of schottky‐diode multipliers as local oscillators at 1 THz

An efficient Schottky-varactor frequency multiplier at millimeter waves. Part IV. Quintupler

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