ŲŻɱ˽װֻźŷŴ
2010-12-13 23:21йֻԭ
ֻźŷŴҪ֮֡ǰйز˶δɰװֻͺŷŴ豸ĽֹΥʹ߽⡢û豸5000Ԫķ
ֻźŷŴ˴ܱû档ڰװֻźŷŴڰװ߱˵ǽϺõʹЧǶڰװ豸50-300ҵĵ2ǽ20-100ڵĵֻûȴһӰ졣
ΪЩֻûԴźţһƶ/ͨĻվźţһֻŴͺţлڣֻźŷŴŴźſܻͨʵźŲǿͻһԶлٽֻźŷŴĵضͨ
ֻźŷŴѧСֱվҪĿΪƶͨźäźͨ豸
һ棬ڰװֻźŷŴҪעλúͷףеûװܵ°ȫ
Ŀǰ϶ֻźŷŴҲϣҪ·棺
װֱֻվûDZȰװΪ˭ҲԸⱻֻ֡Ϊֻź̫ûźŲűȰװֹװôƶͨŹ˾ȴܽͨŸ⣬ôûѹ
ֱվͰװվ⡣еĽСҵֹƶͨŹ˾Լ¥ϰװվֱվļͷ䣬վûΪֹ˽װֱվƶͨŹ˾װվֺΧĽ䡰Ϸԡ
˽ֱվȻйزŵĹ涨ǵŹ˾ΪûҪǵλҵûװ豸ҪôȶûĽǶѽУҪôйػȡ˸߶շѣŹ˾װĴ豸Ƿͬڴֵ˼йػĸ߶շѵĺԺͺϷֵȶ
ֻźŷŴ
۸200-350Ԫ
һ̨
Դ1
һ֧װʱֻյϣ
һ֧ӷŴ
ƶ绰źŷŴһֲƶ绰лվǷΧ㣬վǷΧ串ǷΧäһּЧ豸ƫԶɽסլС̳ͣСƵꡢݼ䡢ͥд¥ҵƶ绰źŷŴɽ赲δźʱͨԵĸãǽƶ绰źšäáЧķƶ绰ͨͨ衣
1.ä㡱
ֻźŷŴ˴ܱû档ڰװֻźŷŴڰװ߱˵ǽϺõʹЧǶڰװ豸50-300ҵĵ2ǽ20-100ڵĵֻûȴһӰ졣
ΪЩֻûԴźţһƶ/ͨĻվźţһֻŴͺţлڣֻźŷŴŴźſܻͨʵźŲǿͻһԶлٽֻźŷŴĵضͨ
ֻźŷŴѧСֱվҪĿΪƶͨźäźͨ豸
һ棬ڰװֻźŷŴҪעλúͷףеûװܵ°ȫ
Ŀǰ϶ֻźŷŴҲϣҪ·棺
װֱֻվûDZȰװΪ˭ҲԸⱻֻ֡Ϊֻź̫ûźŲűȰװֹװôƶͨŹ˾ȴܽͨŸ⣬ôûѹ
ֱվͰװվ⡣еĽСҵֹƶͨŹ˾Լ¥ϰװվֱվļͷ䣬վûΪֹ˽װֱվƶͨŹ˾װվֺΧĽ䡰Ϸԡ
˽ֱվȻйزŵĹ涨ǵŹ˾ΪûҪǵλҵûװ豸ҪôȶûĽǶѽУҪôйػȡ˸߶շѣŹ˾װĴ豸Ƿͬڴֵ˼йػĸ߶շѵĺԺͺϷֵȶ
ֻźŷŴ
۸200-350Ԫ
һ̨
Դ1
һ֧װʱֻյϣ
һ֧ӷŴ
ƶ绰źŷŴһֲƶ绰лվǷΧ㣬վǷΧ串ǷΧäһּЧ豸ƫԶɽסլС̳ͣСƵꡢݼ䡢ͥд¥ҵƶ绰źŷŴɽ赲δźʱͨԵĸãǽƶ绰źšäáЧķƶ绰ͨͨ衣
1.ä㡱
ܵɽн赲Σʹֻźű˥γɡäӰֻͨţװֻźŷŴܽ⣬ֻźšУǿǽźäáЧķ
2.ֹ롱
ֻźŲ÷˫ֻͣźʱӰֻźŵȷ루ͨ϶룩װֻźŷŴǿֻźţҪʧ
3.
Щߵֻͽֻź׳ִ룬ʱͻ֮ijЩߵ粨ţԣֻźŷŴźŵȣʹͨ
4.ǿźŽ
Ҫźžĺֻ,ֻͨ.
5.١ͻź
Ǹ߲㽨źԶС,ҶΪ桢ǽIJȶźţƵлƹЧӦӰֻͨš
Ͳ
ƵʷΧ 890MHz915MHz() 935MHz960MHz()
棺 63dB
زģ -18dB
ϵ 5dB
פ ȣ 1.5(V.S.W.R)
豸ʱӣ 1s
ɢ䣺 -36dBm
տ200ƽףڸ100ƽ
ĵַ:http://www.cnonline.org/2010/article/11582.html