| 摘要 |
<p>A wideband communication system and method for wideband communication that provide plural signals to a single transmitting antenna (28). Each signal is independently modulated (16) and amplified (40), and then combined (42) with other signals for transmission on the antenna. The independent amplification, that is, amplification without prior combination with other signals, reduces the number of intermodulation products (IP), thereby reducing the need for complicated IP cancellation techniques. A distribution circuit (22) provides that when the number of signals exceeds the number of amplifiers, two signals may be combined before amplification. The amplified signals may be combined before amplification. The amplified signals may be combined before transmission in combiners that include transformers that reduce IP caused by RF interference. The transformers are formed by enclosing the transmission line within a cavity in a block of ferrite material.</p> |
