X-Beam Antenna

|paG§A-n?s§@ HF ao Beam Antenna?A§ú·Q¤U-±ao¤T￥ó¨?±?¤@?w￥O§A??3z?￡μ??G

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￥H¤U¤?2Dao X-Beam Antenna ¨???aG¤??ó¤T¤?￥ó¨ì¨a¤?￥óao3?àW?q Yagi ¤§???A ?o¨S|3￥H¤W¤T-ó￥O¤H???￡μ?ao°Y?D?A?O§ú¨?￥?1Lμ2oc3ì?23??B?s§@3ì?e??|ó??aG??·í￥O ¤Ho?·Nao HF Beam Antenna?C

|3?? X-Beam ao¤?31μoaí?ó The ARRL Antenna Compendium Volume 1?A§@aì?° Brice Anderson / W9PNE?A￥|aoμ2oc|p¤U1??A°ò￥?¤W?O￥??a￠??¨§?ao?éai¤?￥ó?M?¨￠??¨ §?ao???g¤?￥ó?ò2?|¨ao 2 ¤?￥ó Yagi?A?·?·?Y￥h￥uˉà2M·??Y¨ì￥??ToT°μ|¨ao Arm §?|¨ ￠?ao§?a??A?ò￥Hoù?° X-Beam?C

X-Beam ao¤?¤o

￥H¤Uao-poa¤?|??O￥H?ToTaoa??|?°aia?ao 1/200?BTail ¨?￥??u?|?° 1mm ￥~-±|3?ì?|μ′ ?t￥?ao1q?u¨ó-poa?C|paG§A￥?ao?ToT¤???2ó?A?h Tail aoa??×à3?ó·|¤?¤?|?-poa￥X¨óao ??-èáù-na??F|paG§A￥???2êao1q?u???ToT?A?h Tail aoa??×à3?ó¤?|?-poa￥X¨óao??-è¨ó aoμu?C

|1￥~ Arm aoa??ר?¤￡?O¤@-ó?T?w-è?A§A￥i￥H|b¤@-ó?d3ò¤o???w Arm aoa??×?A￥u-n Arm ?P Tail 2?|X¤U-±ao???Y§Y￥i?G

Total Driven Element Lengh (ft)=2*( Arm + TE ) = 603/f(MHz)

Total Director Element Length (ft)= 2*( Arm + TD ) = 575/f(MHz)

3]-p X-Beam 2?¤@¨B?O￥y¨M?w Arm aoa??×?AμM?á|Aoa￥X Tail aoa??×?C Arm aoa??×￥2?·¤??ó Full Size (Maximum Size) ?P Minimum Size ¤§???A-Y Arm aoa??פ? Full Size X-Beam ao Arm áùa??A?h¨?ai??·|¤àμ??°￥|-óai?¤?A|ó¤￡?O3?¤@ ?ü|V?ê?C??2óao¤?¤o (ft) |p¤U?G

Min Size

?@???@

Item

?@???@

?@Full Size

177/f

?@???@

Arm

?@???@

?@195/f

125/f

?@???@

TE

?@???@

?@106.5/f

110.5/f

?@???@

TD

?@???@

?@92.5/f

¨?￥? Full Size ao|n3B?OàW?e¤????e?A￥Bay§ü?ü±μa? 50￡[?A|ó Min Size aoàW?e¤? ??ˉ??AVSWR ¤j?ù?° 1.4 ￥a￥k?A|]?° Min Size ?P Full Size ao Arm Length ???t¤￡ ·|¤ó¤j?A?ò￥H???3±záù?O?s§@ Full Size X-Beam?C

¤Uaí?° 5 -ó￥D-nàW?qao Full Size ?P Min Size X-Beam ao¤?¤o?]3?|ì?°¤?¤à?^?A¨? |U|ì°μ°?|ò?G

FREQ Min Size Full Size   Arm TE TD Arm TE TD 7.050

843.8

461.3

400.3

766.3

541.4

480.4 10.125

587.1

320.3

278.3

533.8

376.2

333.0 14.100

421.9

230.0

199.5

382.5

269.4

238.9 21.100

255.4

180.5

160.1

282.1

153.8

133.4 28.200

211.0

115.6

100.4

191.9

134.7

119.5

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1. -n±N￥|?ú?ToT?[3]|b°¨1F¤W¨?¤￡§x???A?D¤j?a|U??ˉ?3q?C
2. ±N￥|?ú?ToTao§àoY￥?2ó?·¤l3ò|¨¤è§??A?ToTao§àoY-n?M?·¤l?T?w?A|p|1§?|¨￥|-ó?-?Tao ¤T¨¤§??A¨í-·ao?é-??ToT¤~¤￡·|￥?¨ó￥?￥h?C
3. ±N Tail 3s±μ|b?ToT¤WμM?á?K|b2ó?·¤l¤W?A-nˉS§Oa`·N Director Element ?? Driven Element ao Tail ¤￡-n±μ?ù|a¤è?C
4. Tail aoa??×à3?ó¤?¤?|?-poa￥X¨óaoa??×|h 10 ¤?¤à￥a￥k￥H§Q?????A¨C??|h1wˉdaoa??× à3?ó-n¤@??a??C
5. ±μ¤W?naiaí?q′ú VSWR?C-Y?ó??àW2v°?§C?A′N§a Tail °?±?¤@¨??F-Y?ó??àW2v°?°a?h§a Tail aoa??×?W￥[¤@¨??C-??I?O¨C?ú Tail ?ò°?μu???Wa?ao?qà3?ó¤@???C
6. -??D¨B?J 5 ?A±N?ó??àW2v??|ü?ò?Y-nao¤¤¤?àW2v?C
7. |paG????|n|A§a¤??u?[°a?A?h-è-è??¨ìao?ó??àW2v·|?1¤W°?2??A?ò￥H|b¨B?J 6 ?é|?¤v -n1wˉd?A·íao?e?m?q?C

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|b HF ¤W￥??¨§ú′??g￥?1L3oo?¤??u3qáp¨ì¨où??a3oo?á?ak¨ó???ú¤??uao??ˉà?O¨S|3·N?q ao?A|]?°????a?ap|nao?é-?§Y¨?￥?¨T¨?¤??u¤]￥i￥H3qáp¨ì|a2yao￥t¤@oY?A?ò￥H|b|1¤￡￥? 3oo?¤è￥ü¨ó???ú X-Beam ao??ˉà?C

§úao|naB¤í Daniel ′?¨?￥? 14MHz ao3?àW?q X-Beam?A￥?°_¨óao·P?±?M 4 Element Tribander ao Yagi ?t¤￡|h?C|bà? Pile UP ao?é-??A§ú¤￡′±?? X-Beam ¤@?w ˉàà°§ú±t￥X¤@±?|????A|y|ü¤?￥i￥H?y§ú3o-ó 100W ao Barefoot ?P Big Gun ￥-°_￥-§¤ ?B¤@???va§?A|óμ2aG3q±`¤￡·|￥O¤H￥￠±??C

来源：BV3FG / Robert Suen，https://www.qsl.net/bv3fg