JPH09298496A - Transmitter-receiver for pilot signal - Google Patents

Transmitter-receiver for pilot signal

Info

Publication number
JPH09298496A
JPH09298496A JP11350396A JP11350396A JPH09298496A JP H09298496 A JPH09298496 A JP H09298496A JP 11350396 A JP11350396 A JP 11350396A JP 11350396 A JP11350396 A JP 11350396A JP H09298496 A JPH09298496 A JP H09298496A
Authority
JP
Japan
Prior art keywords
frequency
signal
oscillator
reference signal
output
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP11350396A
Other languages
Japanese (ja)
Inventor
Hiroyuki Miyamoto
裕行 宮本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to JP11350396A priority Critical patent/JPH09298496A/en
Publication of JPH09298496A publication Critical patent/JPH09298496A/en
Pending legal-status Critical Current

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  • Transmitters (AREA)
  • Transceivers (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

PROBLEM TO BE SOLVED: To eliminate spurious radiation of a pilot signal in the transmitter- receiver of the pilot signals using a reference signal in common. SOLUTION: An oscillation output from a PLL circuit consisting of a frequency division ratio setting terminal 20, a programmable counter 6, a prescaler 7, a phase comparator 5, a loop filter 4, and a voltage controlled oscillator 3 is mixed with a signal from a reference signal oscillator 8 and amplified by an amplifier 9 at a mixer 11, and an output signal from the mixer 11 is amplified by an amplifier 2 and a BPF 1 eliminates spurious radiation and a resulting pilot signal is transmitted.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は送受信装置に関し、
特に移動体通信装置に使用されるフィードフォワード回
路の増幅器内部のパイロット信号の送受信装置に関す
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transmitting / receiving apparatus,
In particular, the present invention relates to a pilot signal transmitter / receiver inside an amplifier of a feedforward circuit used in a mobile communication device.

【0002】[0002]

【従来の技術】従来、パイロット信号の送受信装置では
ないが、酷似する一般の送受信装置として、たとえば特
開昭57−193133号公報に示されるように、送受
信を共用する1つの基準発振器を用いて行うことが、装
置の小型軽量、消費電力低減、コスト低減を目的として
実施されている。
2. Description of the Related Art Conventionally, although not a transmitter / receiver for pilot signals, as a general transmitter / receiver that closely resembles, one reference oscillator for sharing transmitter / receiver is used as shown in Japanese Patent Laid-Open No. 193133/1982. What is done is carried out for the purpose of reducing the size and weight of the device, reducing power consumption, and reducing costs.

【0003】図3は従来のPM変調方式による送受信装
置の一例の構成を示すブロック図である。同図におい
て、31は送受信共用器、32は受信混合器、33は帯
域フィルタ、34は振幅制限増幅器(リミッタ)、35
は周波数弁別器、36は演算増幅器、37は周波数逓倍
増幅器、38は受信局発混合器、39は帯域フィルタ、
40は位相振幅等価器、41は水晶基準発振器、42は
分周器、43は送信周波数増幅器、44は位相比較器、
45は積分器、46は電圧制御発振器、47は可変分周
器、48は周波数変調器、49は瞬時振幅制限器であ
る。
FIG. 3 is a block diagram showing the configuration of an example of a conventional transmission / reception apparatus using the PM modulation method. In the figure, 31 is a transmission / reception duplexer, 32 is a reception mixer, 33 is a band filter, 34 is an amplitude limiting amplifier (limiter), and 35 is
Is a frequency discriminator, 36 is an operational amplifier, 37 is a frequency multiplication amplifier, 38 is a receiving station mixer, 39 is a band filter,
40 is a phase amplitude equalizer, 41 is a crystal reference oscillator, 42 is a frequency divider, 43 is a transmission frequency amplifier, 44 is a phase comparator,
Reference numeral 45 is an integrator, 46 is a voltage controlled oscillator, 47 is a variable frequency divider, 48 is a frequency modulator, and 49 is an instantaneous amplitude limiter.

【0004】従来の回路で、送信波は、水晶基準発振器
41で発振された基準周波数fr を分周する分周器42
の出力によって制御される電圧制御発振器46の出力で
ある発振波fVCO を、送信変調入力Ti をリミッタ49
に通した後、周波数変調器48に入力させて周波数変調
を行い、これによって得られた被変調波ftmを増幅器4
3→共用器31を通じて送信出力Pとして送信してい
る。
In the conventional circuit, the transmitted wave divides the reference frequency f r oscillated by the crystal reference oscillator 41 into a frequency divider 42.
The oscillation wave f VCO is the output of the voltage controlled oscillator 46 which is controlled by the output of the transmission modulation input T i limiter 49
Then, it is input to the frequency modulator 48 to perform frequency modulation, and the modulated wave f tm obtained by this is modulated by the amplifier 4
3 → Transmitted as a transmission output P through the duplexer 31.

【0005】又、特開昭60−146532号公報にお
いても、同様に電圧制御発振器の出力を増幅器→共用器
を通じて送信出力している。
In Japanese Patent Laid-Open No. 60-146532, the output of the voltage controlled oscillator is also transmitted and output through the amplifier → shared device.

【0006】[0006]

【発明が解決しようとする課題】上記従来技術の問題点
は次のようなものである。
The problems of the above-mentioned prior art are as follows.

【0007】第1の問題点は、従来の技術において送
信、受信の周波数が異なる2波を用いる場合、共用器を
必要としているために共用器において高調波を除去する
ことが出来るが、本発明と同じように送信、受信の周波
数が同一の場合、共用器を用いることが出来ない為、従
来の技術における共用器が不要となる。この為、送信信
号に電圧制御発振器出力のスプリアスが含まれてしまう
ことである。
The first problem is that when two waves with different transmission and reception frequencies are used in the prior art, a duplexer is required and therefore harmonics can be removed in the duplexer. Similarly, when the transmission and reception frequencies are the same, since the duplexer cannot be used, the duplexer in the conventional technique is unnecessary. Therefore, the transmission signal includes spurious output from the voltage controlled oscillator.

【0008】その理由は、従来技術において共用器を使
用出来ず、電圧制御発振器の出力を直接、送信信号とし
て使用しなくてはならない為である。
The reason is that the duplexer cannot be used in the prior art, and the output of the voltage controlled oscillator must be directly used as the transmission signal.

【0009】本発明の目的は、上記従来技術の問題点に
鑑み、送受信周波数が同一周波数で、共用器を使用出来
ないパイロット信号の送受信装置において、共用器がな
い為に発生する送信時のパイロット信号のスプリアスを
除去する回路を組み込んだ送受信装置を提供することに
ある。
In view of the above-mentioned problems of the prior art, an object of the present invention is to provide a pilot signal transmitting / receiving apparatus which has the same transmission / reception frequency and cannot use a duplexer because there is no duplexer at the time of transmission. It is an object of the present invention to provide a transmitter / receiver incorporating a circuit for removing spurious signals.

【0010】[0010]

【課題を解決するための手段】本発明は、上記目的を達
成するために、送受信に同一周波数を用い、基準信号発
振器を共有するパイロット信号の送受信装置において、
基準周波数の信号を出力する基準信号発振器と、前記基
準信号発振器からの基準信号出力を分周し設定周波数に
ロックして出力する電圧制御発振器を含むPLL回路
と、前記電圧制御発振器からの設定周波数の出力と前記
基準信号発振器からの基準信号出力との混合出力を受
け、パイロット信号を出力する帯域フィルタを有するこ
とを特徴とする。
In order to achieve the above object, the present invention provides a pilot signal transmitting / receiving apparatus which uses the same frequency for transmission and reception and shares a reference signal oscillator,
A reference signal oscillator that outputs a signal of a reference frequency, a PLL circuit that includes a voltage control oscillator that divides a reference signal output from the reference signal oscillator and locks and outputs the reference signal at a set frequency, and a set frequency from the voltage controlled oscillator And a reference signal output from the reference signal oscillator, and a bandpass filter for outputting a pilot signal.

【0011】また、受信に際し、前記電圧制御発振器か
らの設定周波数の出力と受信信号とを混合する混合器を
有し、中間周波数信号を出力することを特徴とする。
Further, when receiving, a mixer for mixing the output of the set frequency from the voltage controlled oscillator and the received signal is provided, and the intermediate frequency signal is output.

【0012】本発明では基準信号発振器と電圧制御発振
器出力を混合してパイロット信号を生成する為、基準信
号発振器と電圧制御発振器の出力のスプリアスが混合器
で混合された後、その出力から帯域フィルタを用いてス
プリアス除去を容易に行なえる。
In the present invention, the reference signal oscillator and the voltage controlled oscillator output are mixed to generate the pilot signal. Therefore, after the spurious of the outputs of the reference signal oscillator and the voltage controlled oscillator are mixed by the mixer, the bandpass filter is output from the output. Can be used to easily remove spurious.

【0013】[0013]

【発明の実施の形態】本発明の実施形態について図面を
参照して詳細に説明する。
Embodiments of the present invention will be described in detail with reference to the drawings.

【0014】図1は本発明の実施例の構成を示すブロッ
ク図である。同図において、1は帯域フィルタ(BP
F)、2は増幅器、3は電圧制御発振器(VCO)、4
はループフィルタ、5は位相比較器、6はプログラマブ
ルデバイダ、7はプリスケーラ、8は基準信号発振器、
9、10は増幅器、11、13は混合器、12は分周器、
14、16は増幅器、15は帯域フィルタ、17は検波
器である。
FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. In the figure, 1 is a bandpass filter (BP).
F), 2 is an amplifier, 3 is a voltage controlled oscillator (VCO), 4
Is a loop filter, 5 is a phase comparator, 6 is a programmable divider, 7 is a prescaler, 8 is a reference signal oscillator,
9, 10 are amplifiers, 11 and 13 are mixers, 12 is a frequency divider,
Reference numerals 14 and 16 are amplifiers, 15 is a bandpass filter, and 17 is a wave detector.

【0015】図1を参照すると、基準信号発振器8の出
力信号は増幅器10で増幅され、分周器12を経て位相
比較器5に入力される。又、分周比設定端子20によっ
て設定された、プログラムデバイダ6とプリスケーラ7
で分周された周波数も同時に位相比較器5に入力され、
位相差に比例したパルスを発生し、ループフィルタ4で
積分され電圧制御発振器3に入力される。又、ループフ
ィルタ4で積分された積分電圧はプログラムデバイダ6
の出力周波数と基準信号器8の分周周波数とが同期され
る様に出力される。次にプログラムデバイダ6からの分
周出力周波数と基準信号発振器8の分周周波数とが同一
となってループロックがかかり、電圧制御発振器3の出
力が一定の周波数で安定出力される。その出力は分配さ
れ、増幅器18で増幅して混合器11に入力され、基準
周波数と混合し送信出力が混合器11より出力される。
混合器11の出力は、増幅器2を通り、帯域フィルタ1
にて不要成分を除去してパイロット信号として出力され
る。電圧制御発振器3の分配出力の他方は増幅器19に
て増幅されて混合器13に入力されて、増幅器14で増
幅されて受信信号と混合され中間周波数に変換される。
そして混合器13の出力は帯域フィルタ15を通り増幅
器16を経て検波器17にて受信信号の検波電圧として
取り出される構成である。
Referring to FIG. 1, the output signal of the reference signal oscillator 8 is amplified by the amplifier 10, and is input to the phase comparator 5 via the frequency divider 12. In addition, the program divider 6 and the prescaler 7 set by the division ratio setting terminal 20.
The frequency divided by is also input to the phase comparator 5 at the same time,
A pulse proportional to the phase difference is generated, integrated by the loop filter 4 and input to the voltage controlled oscillator 3. In addition, the integrated voltage integrated by the loop filter 4 is the program divider 6
Of the reference signal 8 and the divided frequency of the reference signal device 8 are output so as to be synchronized with each other. Then, the frequency division output frequency from the program divider 6 and the frequency division frequency of the reference signal oscillator 8 become the same, and the loop is locked, and the output of the voltage controlled oscillator 3 is stably output at a constant frequency. The output is distributed, amplified by the amplifier 18, input to the mixer 11, mixed with the reference frequency, and the transmission output is output from the mixer 11.
The output of mixer 11 passes through amplifier 2 and bandpass filter 1
At, the unnecessary components are removed and output as a pilot signal. The other distributed output of the voltage controlled oscillator 3 is amplified by the amplifier 19 and input to the mixer 13, amplified by the amplifier 14 and mixed with the received signal to be converted into an intermediate frequency.
The output of the mixer 13 passes through the bandpass filter 15, the amplifier 16, and is detected by the wave detector 17 as the detected voltage of the received signal.

【0016】本発明の実施例の作用を図を参照して詳細
に説明する。図2は本発明の実施例の作用を示す図であ
る。
The operation of the embodiment of the present invention will be described in detail with reference to the drawings. FIG. 2 is a diagram showing the operation of the embodiment of the present invention.

【0017】本件の説明を行なうに当り、送信周波数f
T =800MHzと受信周波数fR=800MHzと
し、中間周波数fRΔ=90MHzとなる設計を前提に
説明する。
In explaining the present case, the transmission frequency f
The description will be made on the assumption that T = 800 MHz and the reception frequency f R = 800 MHz, and the intermediate frequency f R Δ = 90 MHz.

【0018】基準信号発振器8から出力された信号は増
幅器10にて増幅され、分周器12で分周し位相比較器
5に入力される。又、分周比設定端子20により設定さ
れた、プログラマブルデバイダ6とプリスケーラ7で分
周された周波数も同時に位相比較器5に入力され、比較
器5はその位相差に比例したパルス幅を有する信号を発
生し、ループフィルタ4で積分され制御電圧として電圧
制御発振器3に与えられる。積分電圧はプログラマブル
デバイダ6の出力周波数と基準信号発振器8の分周周波
数とが同期される様に出力される。そして、プログラム
デバイダ6からの分周出力周波数と基準信号発振器8の
分周周波数が同一となり、ループロックがかかり電圧制
御発振器3の出力が一定の周波数で安定する(本動作は
PLLシンセサイザの基本動作である)。本回路では電
圧制御発振器3の出力がfVO=890MHzになる様、
プログラマブルデバイダ6に入力される分周比設定端子
20によって制御されている。このfVO=890MHz
は分配されて増幅器18で増幅して混合器11に入力さ
れ、基準信号発振器8からの基準周波数f0 =90MH
zと混合され、fT =fVO−f0 =890−90=80
0MHzのパイロット信号を与ている。このfT =80
0MHzは増幅器2で増幅され、帯域フィルタ1を通り
高調波等の不要成分を除去し、クリーンなパイロット信
号として出力される。
The signal output from the reference signal oscillator 8 is amplified by the amplifier 10, divided by the frequency divider 12, and input to the phase comparator 5. Further, the frequency divided by the programmable divider 6 and the prescaler 7 set by the division ratio setting terminal 20 is also input to the phase comparator 5 at the same time, and the comparator 5 outputs a signal having a pulse width proportional to the phase difference. Is generated, integrated by the loop filter 4 and given to the voltage controlled oscillator 3 as a control voltage. The integrated voltage is output so that the output frequency of the programmable divider 6 and the divided frequency of the reference signal oscillator 8 are synchronized. Then, the frequency division output frequency from the program divider 6 and the frequency division frequency of the reference signal oscillator 8 become the same, loop lock is applied, and the output of the voltage controlled oscillator 3 stabilizes at a constant frequency (this operation is the basic operation of the PLL synthesizer. Is). In this circuit, the output of the voltage controlled oscillator 3 becomes f VO = 890MHz,
It is controlled by the frequency division ratio setting terminal 20 input to the programmable divider 6. This f VO = 890MHz
Is distributed, amplified by the amplifier 18, input to the mixer 11, and the reference frequency f 0 = 90 MH from the reference signal oscillator 8.
mixed with z, f T = f VO −f 0 = 890−90 = 80
A 0 MHz pilot signal is applied. This f T = 80
0 MHz is amplified by the amplifier 2, passes through the bandpass filter 1, removes unnecessary components such as harmonics, and is output as a clean pilot signal.

【0019】又、電圧制御発振器3の分配出力のもう一
方は、増幅器19にて増幅されて混合器13に入力され
て、増幅器14で増幅された受信信号fR =800MH
zと混合され、f=fVO−fR =890−800=90
MHzの中間周波数信号が得られる。
The other distributed output of the voltage controlled oscillator 3 is amplified by the amplifier 19 and input to the mixer 13, and the received signal f R = 800 MH amplified by the amplifier 14.
mixed with z, f = f VO −f R = 890−800 = 90
An intermediate frequency signal of MHz is obtained.

【0020】混合器13から出力される中間周波数の信
号は、帯域フィルタ15を通り増幅器16を経て検波器
17にて受信信号の周波数に比例した検波電圧として出
力される。
The intermediate frequency signal output from the mixer 13 is output as a detection voltage proportional to the frequency of the received signal by the detector 17 after passing through the bandpass filter 15 and the amplifier 16.

【0021】[0021]

【発明の効果】本発明の構成によれば、電圧制御発振器
の出力に高調波等の不要成分を除去する帯域フィルタを
入れたことで、送信出力に高調波成分のないパイロット
信号を出力することが出来るという効果を奏する。
According to the structure of the present invention, a band-pass filter for removing unnecessary components such as higher harmonics is inserted in the output of the voltage controlled oscillator, so that a pilot signal having no higher harmonic components is output to the transmission output. There is an effect that can be.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の実施例の構成を示すブロック図FIG. 1 is a block diagram showing a configuration of an embodiment of the present invention.

【図2】本発明の実施例の作用を示す図FIG. 2 is a diagram showing the operation of the embodiment of the present invention.

【図3】従来のPM変調方式による送受信装置の一例の
構成を示すブロック図
FIG. 3 is a block diagram showing a configuration of an example of a transmission / reception device using a conventional PM modulation method.

【符号の説明】[Explanation of symbols]

1 帯域フィルタBPF 2 増幅器 3 電圧制御発振器VCO 4 ループフィルタ 5 位相比較器 6 プログラマブルデバイダ 7 プリスケーラ 8 基準信号発振器 9、10 増幅器 11、13 混合器 12 分周器 14、16 増幅器 15 帯域フィルタ 17 検波器 18、19 増幅器 20 分周比設定端子 31 送受信共用器 32 受信混合器 33 帯域フィルタBPF 34 振幅制限増幅器(リミッタ) 35 周波数弁別器 36 演算増幅器 37 周波数逓倍増幅器 38 受信局発混合器 39 帯域フィルタ 40 位相振幅等価器 41 水晶基準発振器 42 分周器 43 送信周波数増幅器 44 位相比較器 45 積分器 46 電圧制御発振器 47 可変分周器 48 周波数変調器 49 瞬時振幅制限器 1 bandpass filter BPF 2 amplifier 3 voltage control oscillator VCO 4 loop filter 5 phase comparator 6 programmable divider 7 prescaler 8 reference signal oscillator 9, 10 amplifier 11, 13 mixer 12 frequency divider 14, 16 amplifier 15 bandpass filter 17 detector 18, 19 Amplifier 20 Dividing ratio setting terminal 31 Transmission / reception duplexer 32 Reception mixer 33 Band filter BPF 34 Amplitude limiting amplifier (limiter) 35 Frequency discriminator 36 Operational amplifier 37 Frequency multiplication amplifier 38 Receiver station mixer 39 Band filter 40 Phase amplitude equalizer 41 Crystal reference oscillator 42 Frequency divider 43 Transmission frequency amplifier 44 Phase comparator 45 Integrator 46 Voltage controlled oscillator 47 Variable frequency divider 48 Frequency modulator 49 Instantaneous amplitude limiter

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 送受信に同一周波数を用い、基準信号発
振器を共有するパイロット信号の送受信装置において、
基準周波数の信号を出力する基準信号発振器と、前記基
準信号発振器からの基準信号出力を分周し設定周波数に
ロックして出力する電圧制御発振器を含むPLL回路
と、前記電圧制御発振器からの設定周波数の出力と前記
基準信号発振器からの基準信号出力との混合出力を受
け、パイロット信号を出力する帯域フィルタを有するこ
とを特徴とするパイロット信号の送受信装置。
1. A transmitter / receiver for pilot signals that uses the same frequency for transmission and reception and shares a reference signal oscillator,
A reference signal oscillator that outputs a signal of a reference frequency, a PLL circuit that includes a voltage control oscillator that divides a reference signal output from the reference signal oscillator and locks and outputs the reference signal at a set frequency, and a set frequency from the voltage controlled oscillator And a reference signal output from the reference signal oscillator, and a pilot signal transmitting / receiving apparatus having a bandpass filter for outputting a pilot signal.
【請求項2】 送受信に同一周波数を用い、基準信号発
振器を共有するパイロット信号の送受信装置において、
基準周波数の信号を出力する基準信号発振器と、前記基
準信号発振器からの基準信号出力を分周し設定周波数に
ロックして出力する電圧制御発振器を含むPLL回路
と、前記電圧制御発振器からの設定周波数の出力と受信
信号とを混合する混合器を有し、中間周波数信号を出力
することを特徴とするパイロット信号の送受信装置。
2. A transmitter / receiver for pilot signals that uses the same frequency for transmission and reception and shares a reference signal oscillator,
A reference signal oscillator that outputs a signal of a reference frequency, a PLL circuit that includes a voltage control oscillator that divides a reference signal output from the reference signal oscillator and locks and outputs the reference signal at a set frequency, and a set frequency from the voltage controlled oscillator A transmitter / receiver of a pilot signal, which has a mixer for mixing the output of the signal and the received signal and outputs an intermediate frequency signal.
JP11350396A 1996-05-08 1996-05-08 Transmitter-receiver for pilot signal Pending JPH09298496A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11350396A JPH09298496A (en) 1996-05-08 1996-05-08 Transmitter-receiver for pilot signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11350396A JPH09298496A (en) 1996-05-08 1996-05-08 Transmitter-receiver for pilot signal

Publications (1)

Publication Number Publication Date
JPH09298496A true JPH09298496A (en) 1997-11-18

Family

ID=14613984

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11350396A Pending JPH09298496A (en) 1996-05-08 1996-05-08 Transmitter-receiver for pilot signal

Country Status (1)

Country Link
JP (1) JPH09298496A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU716451B2 (en) * 1997-12-02 2000-02-24 Samsung Electro-Mechanics Co., Ltd. Wireless transceiver
JP2016009298A (en) * 2014-06-24 2016-01-18 日本リライアンス株式会社 Information processor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU716451B2 (en) * 1997-12-02 2000-02-24 Samsung Electro-Mechanics Co., Ltd. Wireless transceiver
JP2016009298A (en) * 2014-06-24 2016-01-18 日本リライアンス株式会社 Information processor

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