路
1
路
鐢ㄤ簬鏈鸿浇
SAR
鐨?/p>
UHF
娉㈡瀹藉甫鍙屾瀬鍖栧井甯﹀ぉ绾?/p>
鍗㈡檽楣?/p>
楂?/p>
鍒?/p>
鏉?/p>
闆?/p>
锛堜腑鍥界數瀛愮鎶�闆嗗洟鍏徃绗笁鍗佸叓鐮旂┒鎵�锛屽悎鑲?/p>
230031
锛?/p>
鎽?/p>
瑕侊細
鏈枃鎻愬嚭浜嗕竴绉嶇粨鏋勭畝鍗曞彲鐢ㄤ簬鏈鸿浇
SAR
鐨?/p>
UHF
娉㈡瀹藉甫鍙屾瀬鍖栧ぉ绾裤�傞�氳繃灏嗚儗鑵旀妧鏈�佽繎鑰﹀悎
棣堢數鎶�鏈�佸弻灞傚井甯﹁创鐗囨妧鏈互鍙婂洓鐐归鐢垫妧鏈殑鏈夋晥缁撳悎锛屽疄鐜颁簡浣庡墫闈€�佸甯︺�侀珮闅旂鍜屼綆浜ゅ弶鏋佸寲鐨?/p>
鎬ц兘銆?/p>
瀵瑰绔嬪崟鍏冨強
1
脳
4
灏忛樀鐨勪豢鐪熷強娴嬭瘯缁撴灉琛ㄦ槑锛?/p>
璇ュぉ绾垮湪
36.7%
甯﹀鍐呴┗娉㈡瘮浼樹簬
1.5
銆?/p>
鏋佸寲闅旂浼樹簬
55dB
銆佷氦鍙夋瀬鍖栦綆浜?/p>
-25dB
銆?/p>
鍏抽敭璇嶏細
瀹藉甫锛涘弻鏋佸寲锛涘井甯﹁创鐗囧ぉ绾匡紱
SAR
A UHF Microstrip Antenna with Wide-Bandwidth and Dual-Polarization for
Airborne SAR Application
Lu Xiaopeng
Gao Chu
Li Yan
( No.38 Research Institute of CETC, Hefei 230031)
Abstract:
A
simple
UHF
Microstrip
Antenna
with
Wide-Bandwidth
and
Dual-Polarization
for
airborne
SAR
application is proposed. By a combination of back-cavity, proximity coupling feeding, dual layer microstrip patch,
and
four-point
feeding
techniques,
characteristics
of
low
profile,
broad
bandwidth,
high
isolation
and
low
cross-polarization is realized. From the simulation and experiment results of a single element and a 1 by 4 array, a
VSWR lower than 1.5, a polarization isolation greater than 55dB, a cross polarization lower than -25dB are obtained.
Key words:
Wideband , Dual-Polarization, Microstirp Patch antenna , SAR
1
寮曡█
鏈鸿浇鍚堟垚瀛斿緞闆疯揪
(SAR)
鏈夊叏澶╁�欍�佸叏澶╂椂鐨?
宸ヤ綔鑳藉姏銆傞殢鐫�
SAR
鎶�鏈殑鎴愮啛鍙婂簲鐢ㄦ帹骞匡紝杩戝勾
鏉ヨ鎶�鏈湪鍦板舰娴嬬粯棰嗗煙鎴愪负涓�澶х爺绌剁儹鐐广�傚妞?
琚鐩栬寕瀵嗙殑鍦板尯杩涜娴嬬粯锛屼负鑾峰彇鍑嗙‘鐨勫湴琛ㄤ俊
鎭紝
搴旈�夌敤鍏锋湁鑹ソ妞嶈绌块�忚兘鍔涚殑
UHF
娉㈡
SAR
銆?
鑰屽甯︺�佸弻鏋佸寲鐨勫ぉ绾垮彲鎻愰珮
SAR
鍥惧儚鐨勫垎杈ㄧ巼鍙?
娓呮櫚搴︺�傚洜姝わ紝寮�鍙戦�傜敤浜庢満杞藉伐浣滃钩鍙扮殑
UHF
娉?
娈靛甯︺�佸弻鏋佸寲澶╃嚎鍗佸垎蹇呰銆?/p>
宸茶鎶ラ亾鐨勫甯﹀弻鏋佸寲澶╃嚎褰㈠紡涓昏鏈変笁澶?
绫伙紝绗竴绫绘槸鍙屾瀬鍖栬缂濇尝瀵煎ぉ绾?/p>
[1]
锛岀浜岀被鏄弻
鏋佸寲瀵圭О鎸瓙绫诲ぉ绾?/p>
[2-4]
锛岀涓夌被鏄弻鏋佸寲寰甫璐?
鐗囧ぉ绾?/p>
[5-6]
銆傝缂濇尝瀵煎ぉ绾跨殑浼樼偣鏄晥鐜囬珮锛岀己鐐?
鏄甫瀹界獎锛屾渶澶у甫瀹戒笉浼氳秴杩?/p>
15%
銆傚悓鏃剁敱浜庢尝瀵?
灏哄闄愬埗锛屽畠涓嶉�傜敤浜?/p>
UHF
浠ヤ笅鐨勪綆棰戝ぉ绾胯璁°�?
瀵逛簬鍙屾瀬鍖栧绉版尟瀛愮被澶╃嚎锛屽叾浼樼偣鏄甫瀹藉锛岀己
鐐规槸澶╃嚎鍓栭潰灏哄澶э紝涓ょ鏋佸寲澶╃嚎鍗曞厓鐨勬尝鐡ｄ竴
鑷存�у樊銆傜壒鍒槸褰撳ぉ绾垮伐浣滃湪
UHF
浠ヤ笅鐨勬尝娈垫椂锛?
鐢变簬杞芥満骞冲彴闄愬埗锛屽ぉ绾垮崟鍏冩暟杈冨皯锛岄�犳垚浜嗕袱绉?
鏋佸寲鐘舵�佷笅澶╃嚎鐨勬尝鐡ｅ搴︺�佽儗鐡ｅ強澧炵泭宸紓寰堝ぇ锛?
涓嶅埄浜?/p>
SAR
鐨勬垚鍍忓鐞嗐�傝�屽弻鏋佸寲寰甫璐寸墖澶╃嚎闄?
浜嗗叿鏈夐噸閲忚交銆佸姞宸ョ畝鍗曠瓑浼樼偣锛岃繕鍏锋湁涓ゆ瀬鍖栭潰
娉㈢摚涓�鑷存�уソ鐨勭壒鐐癸紝閫傚悎浜庡弻鏋佸寲鏈鸿浇
SAR
澶╃嚎
鐨勮璁°�備絾瀵逛簬杈冧綆宸ヤ綔娉㈡锛岀敱浜庡井甯︽澘鍘氬害鐨?
闄愬埗锛屼娇寰楀父瑙勫井甯﹁创鐗囧ぉ绾跨殑宸ヤ綔甯﹀杈冪獎銆備负
瑙ｅ喅璇ラ棶棰橈紝鏂囩尞
[5]
閲囩敤浜嗚儗鑵旂粨鏋勪笌閿ュ舰鑰﹀悎鎺?
閽堥鐢电浉缁撳悎鐨勬妧鏈紝鍦ㄥ崟灞傚井甯︾粨鏋勪笂瀹炵幇浜?
46%
鐨勫伐浣滃甫瀹斤紱鏂囩尞
[6]
閲囩敤鍘氭场娌粙璐ㄣ�佷笌鐢靛
琛ュ伩鎺㈤拡棣堢數鐩哥粨鍚堢殑鎶�鏈紝瀹炵幇浜?/p>
30%
鐨勫伐浣滃甫