amplifiers in amplifier array 104 receive a low level radio frequency signal and amplify such a signal to produce a high level output signal which should substantially match the input signal amplifier array 104 may be implemented with amplifiers sold under part number 34 mhw927b 34 by motorola inc of shaumburg ill 60196 for best performance amplifiers in amplifier array 104 should be matched in both gain and phase delay inputs to amplifier array 104 are coupled to outputs of radio frequency rf modulators 106 radio frequency modulated signals produced by rf modulators 106 may include signals modulated according to a code division multiple access cdma modulation scheme as described in a specification entitled wideband spread spectrum cellular system standard eia tia is 95 this modulated radio frequency signal may also be in the form of phase shift keying psk or amplitude phase keying such as quadature amplitude modulation qam modulation according to other air interface standards may also be used examples of other air interfaces include advanced mobile phone serve amps according to the eia 553 standard time division multiple access tdma according to is 54 narrowband amps namps according to is 89 and the air interface used in global system for mobile communication gsm with reference now to fig7 there is depicted a more detailed.