Title :
A mixer computer-aided design tool based in the time domain
Author :
Estabrook, P. ; Lusignan, B.B.
Author_Institution :
Stanford Univ., CA, USA
Abstract :
A time-domain-based technique for computer-aided mixer analysis and design is presented. The design tool uses SPICE to arrive at the steady-state solution of the network equations in the mixer circuit. These nonsinusoidal waveforms are studied to understand the interaction of diode, circuit, and drive conditions. Graphically derived criteria are developed to optimize mixer performance. Circuit characteristics such as conversion loss, input and output impedances at small-signal frequencies are rapidly calculated by using a fast Hartley transform (FHT) to generate the Fourier transform of the required waveforms. This technique can be used to analyze mixers that can be described in terms of transmission lines, lumped components or any other element blocks available with SPICE.<>
Keywords :
circuit CAD; mixers (circuits); solid-state microwave circuits; time-domain synthesis; FHT; Fourier transform; SPICE; computer-aided mixer analysis; conversion loss; drive conditions; fast Hartley transform; graphically derived criteria; interaction of diode; mixer circuit; mixer computer-aided design tool; mixer performance optimisation; network equations; nonsinusoidal waveforms; output impedances; small-signal frequencies; steady-state solution; time-domain-based technique; Circuits; Design automation; Diodes; Equations; Frequency conversion; Impedance; Mixers; SPICE; Steady-state; Time domain analysis;
Conference_Titel :
Microwave Symposium Digest, 1988., IEEE MTT-S International
Conference_Location :
New York, NY, USA
DOI :
10.1109/MWSYM.1988.22224
