DEFINITION OF FUNCTION: This device provides a differential phase shift between the fundamental and harmonically related frequencies.

APPLICATIONS: Optimization and enhancement of traveling wave tubes or amplifiers when a significant amount of power is contained in the harmonic frequency band or emphasis or de-emphasis of harmonic levels is required.

HOW TO SPECIFY

Certain parameters must be defined prior to ordering these phase shifters. The following is a list of those parameters along with a brief definition and a method for determining your specifications.

PHASE SHIFT: The available phase shifts are 200° and 300° configurations, both being adjustable through their entire ranges. This parameter shall be specified in accordance with your particular needs.

FREQUENCY BANDS: Specify both the fundamental frequency range and the portion of the harmonic band where the differential phase shift is required.

INSERTION LOSS: The insertion loss of these devices is attributable to both absorptive and reflective losses, which are measured throughout the frequency of operation including the harmonic band. This parameter is specified as a maximum level. The typical insertion loss of a 200° octave C band harmonic phase shifter is 1.0dB, and 1.25dB for that of a 300° harmonic phase shifter. However, this may vary slightly with higher and lower frequency ranges.
VSWR: This parameter is dependent on many factors such as phase shift, bandwidth, operating frequency range, size and configuration. However, input and output VSWR under most circumstances should not exceed a 1.5:1 for 200° phase shift and 2.0:1 for 300° phase shift.

ADJUSTABILITY: MICA can provide user-friendly adjustments which will allow you to vary the differential phase shift. This adjustment range is typically specified as 0 to 200° or 0 to 300°.

NOTE: Some phase shift will occur at the zero (0) reference point. However, further adjustment will provide the specified phase shift which shall be relative to this zero point.

SIZE: Design and size critieria for both 0 to 200° and 0 to 300° Harmonic Phase Shifters can only be established after determination of all the applicable specifications. Package sizes can then be quoted, and outline drawings provided, for a detailed mechanical layout.

OPTIONS

FUNDAMENTAL BANDWIDTH: Available in bandwidths from less than 30% to octave plus.

FREQUENCY RANGE: 500 MHz to 26.5 GHz

HARMONIC PHASE SHIFT: Available in 200° or 300° configurations.

FIELD ADJUSTABLE: MICA harmonic phase shifters are made field adjustable which will allow you to optimize your system output while being in full operation.

CONNECTORS: MICA provides SMA Female as standard connectors. Other SMA series connectors can be provided on request. TNC and type "N" connectors are not recommended; however may be made available by special order.