ZAX Gunn Oscillators utilize the bulk negative conductance properties
of Gallium Arsenide (GaAs) and Indium Phosphide (InP) Gunn diodes
to convert direct current (dc) into power at millimeter wave frequencies.
Circuits incorporating the Gunn diodes are designed to provide
state-of-the-art performance at frequencies from 18 GHz to above
120 GHz. InP Gunn Oscillators yield higher output power, higher
efficiency, and lower AM noise than their GaAs counterparts. Tunable
models feature high power-bandwidth products. Custom units are
available to meet special customer requirements. ZAX is continuously
advancing the state-of-the-art with new models to meet the highest
- ZAX Fixed Frequency Oscillators (ZFF
series) provide high output power and excellent frequency
and power stability. Bias tuning of Fixed Frequency Gunns permits
precise frequency adjustment over relatively narrow bands.
- ZAX Fixed Frequency Oscillators (ZCSO series) provide
moderate output power with high Q resonant cavity to yield very
low phase noise and high temperature stability.
- ZAX Mechanically Tuned Oscillators
(ZMT series) feature a single micrometer tuner which
allows precise control of the frequency of oscillation with high
output power and monotonic operation across wide frequency bands.
- ZAX Varactor Tuned Oscillators
(ZVT series) permit voltage control of the frequency
of oscillation. These Voltage Controlled Oscillators (VCO's)
are available in narrow and wideband models which makes them
ideally suited for phase locked and swept frequency applications.
- ZAX Injection Locked Oscillators (ZILO
series) permit output powers greater than that available
from single diode oscillators.
Each Gunn diode requires a specified dc voltage for optimal operation.
The current required to turn-on a Gunn oscillator (the threshold
current) normally exceeds the operating current as illustrated
in Figure 1. The power supply should have low ripple to minimize
AM and FM noise.
ZAX Millimeter Wave Corporation, 1558 Howard Access
Rd, Upland, CA 91786
Tel: (909) 985-9299 e-Mail:
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