201238302 六、發明說明： 【發明所屬之技術領域】 [0001] 本發明係有關於一種直接轉頻發射機，特別係有關 於一種可有效抑制非固定波包調制干擾本地振盪源牽引 效應之雙點調制直接轉頻發射機設計。 [先前技術] [0002] 在無線通訊系統中，對本地振盪源（Local osci 1-lat or)而言最常見的干擾源為—乃是經功率放大器 (Power Amplifier)放大後之發射機輸出調制訊號，透 過電磁場輻射或基板耦合方式回授干擾本地振盪訊號， 造成本地振盪訊號之頻譜純淨度與相位雜訊發生惡化， 嚴重影響整體通訊系統之調制品質》 請參閱第6圖，習知直接轉頻發^機2〇〇係包含一訊 波放大Is 210、一本地振盡源電路2 2 0、一電性連接該訊 號放大器210及該本地振盧源電路220之射頻混波器230 、一電性連接該射頻混波器2 3 〇之正交調制器2 4 0及一電 性連接該正交調制器之功率氣大器250，該本地振盪源電 路210係能輸出一本地振盪訊號，當該本地振盈訊號未經 由適當的訊號調制時，該本地振盪源電路210極易因外來 訊號的注入干擾而令本地振盪訊號無法符合預期的訊號 品質與頻率鎖定功能；因此當該直接轉頻發射機2〇〇之調 制訊號經過射頻混波Is 2 3 0並與該本地振盪訊號混合，再 經由該功率放大器250放大並予以發射，該直接轉頻發射 機200之通訊品質將會發生嚴重劣化；換言之，設計者必 須相對提升既有對各子電路元件之線性度需求，才能滿 足通訊系統之嚴格規範。 100107458 表軍編號 AQ101 第 4 頁/共 17 頁 1002012634-0 201238302 [發明内容】 [0003] 本發明之主要目的係在於提供一種具有抗干擾之雙201238302 VI. Description of the Invention: [Technical Field] [0001] The present invention relates to a direct frequency transmitter, and particularly relates to a double point which can effectively suppress the traction effect of a non-fixed wave packet modulation interference local oscillation source Modulated direct-transfer transmitter design. [Prior Art] [0002] In a wireless communication system, the most common source of interference for a local oscillator source (Local osci 1-lat or) is a transmitter output modulation amplified by a power amplifier (Power Amplifier). The signal is transmitted through the electromagnetic field radiation or the substrate coupling method to feedback the local oscillation signal, which causes the spectral purity and phase noise of the local oscillation signal to deteriorate, which seriously affects the modulation quality of the overall communication system. Please refer to Figure 6, the conventional direct conversion The frequency converter 2 includes a signal amplification Is 210, a local vibration source circuit 2 2 0, a radio frequency mixer 230 electrically connected to the signal amplifier 210 and the local oscillation source circuit 220, and a radio frequency mixer 230 The power amplifier 250 is electrically connected to the RF modulator 2 3 正交 and the power oscillating device 250 electrically connected to the quadrature modulator, and the local oscillator circuit 210 can output a local oscillation signal. When the local oscillating signal is not modulated by an appropriate signal, the local oscillating source circuit 210 is highly susceptible to interference due to external signals, so that the local oscillating signal cannot meet the expected signal quality and frequency lock. Function; therefore, when the modulation signal of the direct-transmission transmitter 2 is subjected to radio frequency mixing Is 2 3 0 and mixed with the local oscillation signal, and then amplified and transmitted via the power amplifier 250, the direct-transmission transmitter 200 The quality of communication will be seriously degraded; in other words, the designer must relatively increase the linearity requirements of the various sub-circuit components to meet the strict specifications of the communication system. 100107458 军军号 AQ101 Page 4 of 17 1002012634-0 201238302 [Summary of the Invention] [0003] The main object of the present invention is to provide a double with anti-interference
點調制直接轉頻發射機，其係包含一本地振盪源電路、 一正交調制器、一功率放大器、一可調式類比延遲元件 、一可調式類比衰減器及一雙點電壓調制迴路，該本地 振盪源電路係具有一雙點壓控振盪器及一電性連接雙點 壓控振盪器之鎖相迴路，該雙點壓控振盪器係可輸出一 本地振盪訊號且具有一注入端、一電性連接該注入端之 匹配電路、一電壓調制端、一電性連接該電壓調制端之 RC電路、一電壓調整端、一電性連接該匹配電路、該RC 電路及該電壓調整端之LC諧振器、一電性連接該LC諧振 器之考畢茲電容單元以及一電性連接該LC諧振器及該考 畢茲電容單元之主動電路，該正交調制器係電性連接該 本地振盪源電路，該功率放大器係電性連接該正交調制 器，該可調式類比延遲元件係電性連接該功率放大器， 該可調式類比衰減器係電性連接該可調式類比延遲元件 ，該雙點電壓調制迴路係電性連接該雙點壓控振盪器， 該雙點電壓調制迴路係具有一相位位移器、一電性連接 該相位位移器之可調式增益放大器、一電性連接該可調 式增益放大器之射頻混波器及一電性連接該射頻混波器 之低通濾波器，該雙點電壓調制迴路係輸出一基頻抵銷 信號至該雙點壓控振盪器之該電壓調制端。本發明係藉 由該雙點電壓調制迴路的電路設計，其係輸出該基頻抵 銷信號至壓控振盪器之電壓調制端進行即時的頻率調制 補償，令牽引效應對本地振盪訊號之振幅調制轉頻率調A point modulated direct frequency transmitter comprising a local oscillator source circuit, a quadrature modulator, a power amplifier, an adjustable analog delay element, a tunable analog attenuator, and a dual point voltage modulation loop, the local The oscillating source circuit has a dual-point voltage-controlled oscillator and a phase-locked loop electrically connected to the double-point voltage-controlled oscillator. The dual-point voltage-controlled oscillator can output a local oscillation signal and has an injection end and an electric a matching circuit of the injection terminal, a voltage modulation terminal, an RC circuit electrically connected to the voltage modulation terminal, a voltage adjustment terminal, an electrical connection of the matching circuit, the RC circuit and the LC resonance of the voltage adjustment terminal , a Cobbs capacitor unit electrically connected to the LC resonator, and an active circuit electrically connected to the LC resonator and the Colpitts capacitor unit, the orthogonal modulator is electrically connected to the local oscillator source circuit The power amplifier is electrically connected to the quadrature modulator, and the adjustable analog delay element is electrically connected to the power amplifier, and the adjustable analog attenuator is electrically connected to the adjustable amplifier. The double-point voltage modulation circuit is electrically connected to the two-point voltage-controlled oscillator, and the two-point voltage modulation circuit has a phase shifter, an adjustable gain amplifier electrically connected to the phase shifter, and a An RF mixer electrically connected to the adjustable gain amplifier and a low pass filter electrically connected to the RF mixer, the dual point voltage modulation circuit outputs a fundamental frequency offset signal to the double point voltage controlled oscillation The voltage modulation terminal of the device. The invention adopts the circuit design of the double-point voltage modulation loop, which outputs the fundamental frequency cancellation signal to the voltage modulation end of the voltage controlled oscillator for instantaneous frequency modulation compensation, so that the traction effect on the amplitude modulation of the local oscillation signal Frequency adjustment
制（AM-FM convers ion)與相位調制轉頻率調制（PM-FM 100107458 表單編號A0101 第5頁/共17頁 1002012634-0 201238302 conversion)失真現象獲得抑制。 【實施方式】 請參閱第1及2圖，其係本發明之一較佳實施例，一 種具有抗干擾之雙點調制直接轉頻發射機1〇〇，係包含一 本地振盪源電路110、一正交調制器12〇、一功率放大器 130、一可調式類比延遲元件14()、一可調式類比衰減器 150及一雙點電壓調制迴路16〇 ,在本實施例中，該本地 振盪源電路11 0係具有一雙點壓控振盪器丨丨丨及一電性連 接該雙點壓控振盪器之鎖相迴路（phase L〇ck(AM-FM convers ion) and phase modulation to frequency modulation (PM-FM 100107458 Form No. A0101 Page 5 of 17 1002012634-0 201238302 conversion) distortion is suppressed. [Embodiment] Please refer to Figures 1 and 2, which are a preferred embodiment of the present invention, a dual-point modulation direct-transmission transmitter with interference rejection, comprising a local oscillator source circuit 110, a quadrature modulator 12A, a power amplifier 130, an adjustable analog delay element 14(), an adjustable analog attenuator 150, and a dual point voltage modulation loop 16A. In this embodiment, the local oscillator source circuit The 11 0 series has a dual-point voltage controlled oscillator and a phase-locked loop electrically connected to the two-point voltage controlled oscillator (phase L〇ck
Loop，PLL)112 ’其中該雙點壓控振盪器lu係具有一 注入端111a、一電性連接該注入端1Ua之匹配電路mb 、一電壓調制端111c、一電性連接該電壓調制端丨llc之 RC電路11 Id、一電壓調整端llle、一電性連接該匹配電 路111b、該RC電路111(1及該電壓調整端1116之[^諧振 器lllf、一電性連接該LC諧振器1Uf2考畢茲 (c〇ibitts)電容單元nig、一電性連接該LC諧振器 lllf及該考畢茲電容單元m g之主動電路〗丨丨h以及一電 性連接該主動電路lllh之壓控^盡輪出端11118 ’該雙點 壓控振盪器111之該壓控振盪輸出端11111}係可輸出一本地 振盪訊號，該正交調制器120係電性連接該本地振盪源電 路110之該雙點壓控振盪器lu且接收該本地振盪訊號以 輸出一調制訊號，該功率放大器130係電性連接該正交調 制器120且接收該調制訊號以產生一發射機輸出訊號該 可調式類比延遲元件14 〇係電性連接該功率放大器i 3 〇且 接收s亥輸出訊號以產生一延遲訊號，該可調式類比衰減 100107458 器150係電性連接該可調式類比延遲元件14〇且接收該延 表單編號A0101 第6頁/共17頁 1002012634-0 201238302 遲訊號以產生一調變訊號’在本實施例中’該雙點電壓 調制迴路160係具有一相位位移器161、一可調式增益放 大器162、一射頻混波器163及一低通濾波器164，該本 地振盪訊號係可輸送至該雙點電壓調制迴路16〇之該相位 位移器161以產生一位移訊號，該可調式增益放大器1&2 係電性連接該相位位移器161且接收該位移訊號以產生一 放大訊號，該射頻混波器163係電性連接該可調式增益放 大器162且接收該放大訊號及該發射機輸出訊號以產生一Loop, PLL) 112 ' wherein the dual-point voltage controlled oscillator has an injection terminal 111a, a matching circuit mb electrically connected to the injection terminal 1Ua, a voltage modulation terminal 111c, and an electrical connection terminal. The RC circuit 11 Id of the llc, the voltage adjustment terminal 11le, the electrical connection of the matching circuit 111b, the RC circuit 111 (1 and the voltage adjustment terminal 1116 [^ resonator lllf, an electrical connection of the LC resonator 1Uf2 a c〇ibitts capacitor unit nig, an active circuit 电h electrically connected to the LC resonator lllf and the Cobbits capacitor unit mg, and a voltage control system electrically connected to the active circuit lllh The voltage output oscillating output 11111} of the dual-point voltage controlled oscillator 111 can output a local oscillation signal, and the orthogonal modulator 120 is electrically connected to the double point of the local oscillation source circuit 110. The voltage controlled oscillator lu receives the local oscillation signal to output a modulated signal, and the power amplifier 130 is electrically connected to the orthogonal modulator 120 and receives the modulated signal to generate a transmitter output signal. The adjustable analog delay element 14 〇 is electrically connected to the power The illuminator i 3 receives the s-out output signal to generate a delay signal, and the tunable analog attenuation 100107 458 is electrically connected to the tunable analog delay element 14 接收 and receives the extended form number A0101. Page 1002012634-0 201238302 The delay signal is used to generate a modulation signal. In the present embodiment, the two-point voltage modulation circuit 160 has a phase shifter 161, an adjustable gain amplifier 162, a radio frequency mixer 163 and a a low-pass filter 164, the local oscillation signal can be sent to the phase shifter 161 of the two-point voltage modulation circuit 16 to generate a displacement signal, and the adjustable gain amplifier 1& 2 is electrically connected to the phase shifter 161 and receiving the displacement signal to generate an amplification signal, the RF mixer 163 is electrically connected to the adjustable gain amplifier 162 and receives the amplified signal and the transmitter output signal to generate a
Ο 100107458 混合訊號，該低通濾波器164係電性連接該射頻混波器 163且接收該混合訊號以輸出一基頻抵銷訊號，在本實施 ，该可調式類比衰減器150所產生之調變訊號及該雙 電壓調制迴路16G所產生之基頻抵鎖訊號係分別注入該 點壓控振盪器U1之該注入端及該1113電壓調制端 U 1 c，此外 由於該鎖相迴路112係電性連接該雙點壓控 振盈器1 生之 電廢調整端llle，故該鎖相迴路112所產 ^電墨調整訊號係注入該雙點屢控振# 屋調整端1Π „ 勺（ e，虽該本地振盪释.電路110面臨一非固定波 藉由/ constant envelope)調制訊號之注入干擾時， 兮趟Λ雙點電壓調制迴路160所產生之基頻抵銷訊號注入 5亥雙點壓拍ί # & 盈盗111，係可使得該本地振盪源電路110 可有效抵枋* & 訊號、A 自該直接轉頻發射機100輸出之發射機輸出 '迢成之干擾，因此可有效抵銷振幅調制轉頻率調 制（AM~FM rΟ 100107458 mixed signal, the low pass filter 164 is electrically connected to the RF mixer 163 and receives the mixed signal to output a fundamental offset signal. In the present embodiment, the adjustable analog attenuator 150 generates a tone. The variable frequency signal and the fundamental frequency offset signal generated by the dual voltage modulation circuit 16G are respectively injected into the injection end of the voltage controlled oscillator U1 and the voltage modulation terminal U 1 c of the 1113, and further, the phase locked loop 112 is electrically connected. The connection between the two-point voltage-controlled vibrator 1 and the electric waste adjustment terminal llle is connected, so that the electro-optic adjustment signal generated by the phase-locked loop 112 is injected into the double-point repeatedly controlled vibration # 调整 调 Π „ 勺 scoop (e, When the local oscillation release circuit 110 is faced with interference injection of a non-fixed wave modulated signal, the fundamental frequency offset signal generated by the dual-point voltage modulation circuit 160 is injected into the 5H double-point pressure clamp. ί # & 盈 111 111, can make the local oscillator source circuit 110 can effectively resist the interference of the * & signal, A transmitter output from the direct-transfer transmitter 100, so it can effectively Pin amplitude modulation to frequency modulation (AM~FM r
conversion)與相位調制轉頻率調制（pM_FM C〇n:Si〇n)之失真現象。 請再參閱第卜2及3圖，該雙點壓控振堡器⑴之該 RC電路Hid值a a 表革城 〇係包含一第一偏壓電阻ill i及一耦合電容 第7頁/共17頁 1002012634-0 201238302 1 1 1 j ’该電壓調制端1 1 1 c係電性連接該第一偏壓電阻 11Η及該耦合電容111 j，此外，該雙點壓控振盪器ill 係另具有—電性連接該電壓調整端llle之第二偏壓電阻 Ulk及該—可變電容丨丨丨丨，該可變電容1U1之一端係電 性連接該第二偏壓電阻lllk、該匹配電路丨llb及該LC諧 振器111 f，該可變電容1111之另一端係電性連接該第一 偏壓電阻111 i及該耦合電容U1j，另外，該直接轉頻發 射機另具有一功率分配器170 ’該功率分配器170之 一端係電性連接該功率放大器130，該功率分配器17〇之 另一端係電性連接該可調式類比延遲元件140。 請參閱第4及5圖，其係該直接轉頻發射機1〇〇經由該 雙點電壓調制迴路16〇改善前後之輸出頻譜及輸出訊號調 制品質之量測曲線圖，由第4圖所未曲線厨可知，該雙點 電壓調制迴路160可有效抑制調制訊號干擾對該直接轉頻 發射機100所造成之鄰近通道功率比值惡化現象；此外， 該發射機輸出訊號品質（決定品質的指標參數為誤差向量 幅度）在一定的注入干擾功率準位範圍中，皆能有效遵守 cdma2000 1χ通訊系統之最低規範，如第5圖所示。 本發明係藉由該直接轉頻發射機1〇〇之該内部自我注 入鎖定迴路160之電路設計，係可有效抑制本地振盪源牽 引效應之惡化現象，毋需耗費龐大的電路成本或數位處 理技術，便能具體提升本地振盪源之抗干擾能力。 本發明之保護範圍當視後附之申請專利範圍所界定 者為準，任何熟知此項技藝者，在不脫離本發明之精神 和範圍内所作之任何變化與修改，均屬於本發明之保護 範圍。 100107458 表單編號A0101 第8頁/共17頁 1002012634-0 201238302 【圖式簡單說明】 [0005]Conversion) and phase modulation to frequency modulation (pM_FM C〇n: Si〇n) distortion phenomenon. Please refer to the figures 2 and 3 again. The RC circuit of the two-point voltage-controlled vibrating device (1) has a Hid value aa. The eccentricity of the RC circuit includes a first bias resistor ill i and a coupling capacitor. Page 1002012634-0 201238302 1 1 1 j ' The voltage modulation terminal 1 1 1 c is electrically connected to the first bias resistor 11 Η and the coupling capacitor 111 j , and further, the dual-point voltage controlled oscillator ill has another The second bias resistor Ulk and the variable capacitor 丨丨丨丨 are electrically connected to one end of the variable capacitor 1U1, and one end of the variable capacitor 1U1 is electrically connected to the second bias resistor 11lk, and the matching circuit 丨llb And the LC resonator 111 f, the other end of the variable capacitor 1111 is electrically connected to the first bias resistor 111 i and the coupling capacitor U1j, and the direct transponder has another power divider 170 ' One end of the power splitter 170 is electrically connected to the power amplifier 130, and the other end of the power splitter 17 is electrically connected to the adjustable analog delay element 140. Please refer to Figures 4 and 5, which are the measurement curves of the output spectrum and the output signal modulation quality of the direct-transfer transmitter 1 through the two-point voltage modulation circuit 16〇, which is shown in Figure 4 According to the curve kitchen, the dual-point voltage modulation circuit 160 can effectively suppress the deterioration of the adjacent channel power ratio caused by the modulation signal interference to the direct-transmission transmitter 100. In addition, the transmitter outputs signal quality (the quality parameter is determined as The error vector magnitude can effectively comply with the minimum specification of the cdma2000 1χ communication system in a certain range of injected interference power levels, as shown in Figure 5. The invention is designed by the circuit of the internal self-injection locking loop 160 of the direct frequency transmitter transmitter, which can effectively suppress the deterioration of the traction effect of the local oscillation source, and requires a huge circuit cost or digital processing technology. The specific anti-interference ability of the local oscillation source can be specifically improved. The scope of the present invention is defined by the scope of the appended claims, and any changes and modifications made by those skilled in the art without departing from the spirit and scope of the invention are within the scope of the present invention. . 100107458 Form No. A0101 Page 8 of 17 1002012634-0 201238302 [Simple Description] [0005]
第圖依據本發明之一較佳實施例，一種具有抗干擾之 雙點調制直接轉頻發射機之之電路圖。 第2圖.依縣發明之—㈣實施例，該具有抗干擾之雙 點調制直接轉頻發射機之雙㈣控振盡器之示意圖。 第3圖&據本發明之一較佳實施例，該具有抗干擾之雙 點調制直接轉頻發射機之雙點屋控振I器之電路圖。 第4圖.依據本發明之一較佳實施例，該具有抗干擾之雙 點調制直接轉頻發射機之輪出頻譜量測圖。 第5圖：依據本發明之一較佳實施例，該具有抗干擾之雙 點調制直接轉頻發射機之輪出調制品質量蜊圖。 第6圖：習知直接轉頻發射機之示意圖》 【主要元件符號說明】 第9頁/共η頁 [0006] 100直接轉頻發射機 111雙點壓控振盪器 111b匹配電路 llld RC電路 丨 lllf LC諧振器 lllh主動電路 lllj柄合電容 1111可變電容 120正交調制器 140可調式類比延遲元件 160雙點電壓調制迴路 162可調式增益放大器 164低通濾波器 100107458 表單編號 A0101 110本地振盪源電路 111a注入蠕 111c電壓調制端 llle電壓調整端 lllg考畢茲電容單元 llli第一偏壓電阻 111k第二偏墨電阻 112鎖相迴路 130功率放大器 150可調式類比衰減器 161相位位移器 163射頻混波器 170功率分配器 1002012634-0 201238302 200 直接轉頻發射機 210 訊號放大器 220 本地振盪源電路 230 射頻混波益 240 正交調制器 250 功率放大器 100107458 表單編號A0101 第10頁/共17頁 1002012634-0BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a circuit diagram of a two-point modulated direct-transmission transmitter with interference rejection in accordance with a preferred embodiment of the present invention. Fig. 2 is a schematic diagram of the dual (four) controlled oscillator of the double-point modulation direct-transmission transmitter with anti-jamming. Figure 3 is a circuit diagram of a dual-point house controllable I-device with an anti-jamming two-point modulation direct-transmission transmitter in accordance with a preferred embodiment of the present invention. Figure 4 is a diagram showing the round-trip spectrum of a two-point modulated direct-transmission transmitter with interference rejection in accordance with a preferred embodiment of the present invention. Figure 5 is a diagram showing the quality of the wheel-out product of the two-point modulation direct-transmission transmitter with anti-interference according to a preferred embodiment of the present invention. Fig. 6: Schematic diagram of a conventional direct-transmission transmitter" [Description of main component symbols] Page 9/total n page [0006] 100 direct-transfer transmitter 111 double-point voltage-controlled oscillator 111b matching circuit llld RC circuit Lllf LC resonator lllh active circuit lllj shank capacitor 1111 variable capacitor 120 quadrature modulator 140 adjustable analog delay element 160 double-point voltage modulation loop 162 adjustable gain amplifier 164 low-pass filter 100107458 form number A0101 110 local oscillator source Circuit 111a injection creep 111c voltage modulation terminal llle voltage adjustment terminal lllg cockpit capacitance unit llli first bias resistor 111k second offset ink resistor 112 phase-locked loop 130 power amplifier 150 adjustable analog attenuator 161 phase shifter 163 radio frequency mixing Waves 170 Power Splitter 1002012634-0 201238302 200 Direct Transmitter Transmitter 210 Signal Amplifier 220 Local Oscillator Source Circuit 230 RF Mixing 240 Quadrature Modulator 250 Power Amplifier 100107458 Form Number A0101 Page 10 of 17 1002012634- 0