P1DBpower at one-dB gain compression--
P1DBINP1dB referenced to the input--
P1DBOUTP1dB referenced to the output--
PApower ampAn amplifier that is capable of applying some real heat to the load.
PAEpower-added efficiencyFor a power amp, the ratio of output power divided by the sum of input RF and DC power.
PAMpulse amplitude modulation--
PAPRpeak to average power ratioRatio of the peak power (peak amplitude squared) to the average power (the square of the root mean square value).
PARpeak average ratio--
PCpersonal computer, or politically correctWe don't care if you think that Microwaves101 is not PC, OK?
PCMpulse code modulation, process control monitor--
PCSpersonal communications systemsWireless stuff, thankfully, everybody's gotta have it.
PDKprocess design kitWhat TriQuint or IBM or other open fabs will provide when you design an IC into their foundries.
PDMpower distribution network--
PDSpersonal digital cellularDigital cell phone standard.
PECperfect electrical conductorSee our page on EM fundamentals.
PECVDplasma-enhanced chemical vapor depositionYet another way to apply films to a semiconductor wafer.
PESApassive electronically steered antennaOften uses MEMS phase shifter technology.
PFpico-FaradA unit of capacitance, 10E-12 Farads.
PHpico-HenryA unit of inductance, 10E-12 Henries.
PHEMTpseudomorphic high electron mobility transistor--
PHSpersonal handy phone systemDigital cordless phone standard.
PIDOOMApulled it directly out of my a$$A widely accepted method for obtaining a speedy quotation or prediction.
PINP-type/intrinsic/N-typeA diode structure often used as an RF control component.
PINDparticle impact noise detectionA way to determine of you have any loose stuff inside your sealed-up module.
PLDpulsed laser depositionA laser is used to blast a plume of material that is transferred to a heated substrate.
PLLphase locked loop--
PMCperfect magetic conductorSee our page on EM fundamentals.
PNAprogrammable network analyzerA PNA is a network analyzer that runs the Windows operating system instead of some proprietary interface written in embedded code. It's "programmable" in that you can install applications, network it like a PC, and use a thumb drive to get your data. Than
POSpiece of s###Like in the following want ad: 1989 Hyundai, POS, $500 or best offer.
PPIplan position indicator--
PPMparts per millionUsed to express ratios that are often very much less than 1%
PRphoto-resistThe material that is used used to pattern printed circuits.
PRFpulse repetition frequency--
PSBpink-slip blizzardIf you stay in microwave engineering long enough you will learn what this means...
PSDphase sensitive detector, power spectral density--
PSIApounds per square inch, absoluteThis is pressure, relative to a vacuum.
PSIGpounds per square inch, gaugeThis is pressure, relative to room pressure.
PSKphase shift keyingA method of transmitting data by modulating the phase of a signal.
PTCpositive temperature coefficientA thermistor with resistance value increasing with temperature.
PTFEpoly tetra-flouro etheleneA dielectric material invented in 1938 by Dr. Roy Plunkett at Dupont, used in most RF coax cables and many soft boards.
PTHplated-through hole--
PWBprinted wiring board--
PWMpulse-width modulation--
Author: Unknown Editor