high power rf isolator

How a high-power card becomes a quotation row

Select the closest label, then replace it in the requirement box with your frequency range, impedance, forward power rating, and the power the internal termination must absorb. A card titled with a search phrase is a starting point. The factory still has to name a model. For a 2026 amplifier guard, a buyer might type 100 W average forward, 20 W reflected into the load, SMA female, 50 ohm, and 1.8 GHz to 2.2 GHz. Those figures are an example request, not a catalog rating on this page.

Insertion loss and isolation still need a temperature. A 0.5 dB insertion-loss ceiling and a 20 dB isolation floor are buyer thresholds until the S-parameter plot arrives. VSWR at 1.25:1 is another threshold some benches write down; convert it yourself if you also track return loss, and do not treat this sentence as a lab result. Peak power and average power are different cells. A duty cycle of 10 percent changes the heat the load sees.

Keep a high power rf isolator off the same spreadsheet row as an antenna. Polarization and radiation pattern belong to the antenna. Gain and transmit power belong to the amplifier. The isolator row carries attenuation in the reverse direction, connector gender, and mounting if a heat sink is required. Environmental rating might be -20 C to 70 C for an outdoor radio cabinet, or a milder indoor range for a rack. Ingress protection is a cabinet question unless the isolator body itself is exposed.

Connector mating cycle matters when the same SMA pair is torqued every week on a production tester. Ask whether the datasheet states a cycle count. Measurement accuracy of the incoming check depends on calibration traceability of the network analyzer, which the supplier should describe if they offer a plot. Wavelength is not the isolator specification; frequency range is. If the order also contains fiber, optical budget and reach stay on the optical line.

Two commercial limits follow the watts. Freight, duty, and adapter kits change the total even when the unit price looks similar. A quotation in USD per piece cannot be stacked against a quotation in EUR for the whole order until the basis is written. Optional budget on the form needs that same currency and basis. High-end, mid-range, budget, or undecided remains a preference, not a verified factory score.

Three boundaries keep the card honest. The termination rating can be lower than the forward rating, so a 100 W body with a 5 W load is a different part. Isolation outside the band is not the in-band number. This desk does not hold inventory and does not certify FCC status for the radio attached to the isolator. Read the circulator field list if the third port is still open, and use the RFQ form when the row is ready. The buyer note walks the same attributes in checklist order.