KR930022781A - On-site wireless telephone system - Google Patents

On-site wireless telephone system

Info

Publication number
KR930022781A
KR930022781A KR1019920006986A KR920006986A KR930022781A KR 930022781 A KR930022781 A KR 930022781A KR 1019920006986 A KR1019920006986 A KR 1019920006986A KR 920006986 A KR920006986 A KR 920006986A KR 930022781 A KR930022781 A KR 930022781A
Authority
KR
South Korea
Prior art keywords
telephone system
wireless telephone
transmitting
control circuit
transceiver
Prior art date
Application number
KR1019920006986A
Other languages
Korean (ko)
Inventor
최귀환
Original Assignee
정장호
금성정보통신 주식회사
Filing date
Publication date
Application filed by 정장호, 금성정보통신 주식회사 filed Critical 정장호
Publication of KR930022781A publication Critical patent/KR930022781A/en

Links

Abstract

수신 전계감도에 따라 제어회로에서 송신 및 수신증폭레벨을 제어하여 상호 고주파회로에 서로 간섭을 일으키지않도록 하는 구내 무선전화시스템에 관한 것으로서 제어회로 및 송수신 증폭기 사이에 연결되어 제어회로의 출력신호에 따라 송수신 증폭기의 바이어스전류를 제어하는 바이어스 조절부를 구비하여 주변 고주파회로와의 상호간섭을 억제시킬 뿐만 아니라 송수신부로 입력되는 신호레벨을 낮추게되어 근접된 송수신시 소비전류를 감소시키고, 혼선 및 오동작을 발생을 줄일 수 있도록 한 것이다.A wireless telephone system in a premises that controls transmission and reception amplification levels in a control circuit according to a received electric field sensitivity so that mutual high frequency circuits do not interfere with each other. A bias control unit for controlling the bias current of the amplifier not only suppresses mutual interference with neighboring high frequency circuits, but also lowers the signal level input to the transmitter / receiver, reducing current consumption during close transmission and reception, and reducing crosstalk and malfunction. I would have to.

Description

국내 무선전화 시스템Domestic wireless telephone system

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제4도는 본 발명에 따른 고주파회로의 블럭도.4 is a block diagram of a high frequency circuit according to the present invention.

제5도는 본 발명에 따른 고주파회로의 상세도.5 is a detailed view of a high frequency circuit according to the present invention.

Claims (2)

휴대장치와 주파수를 송수신하는 송수신부와, 상기 수신부의 주파수 세기를 감지하여 제어회로에 전송하는 수신 전계감도 검출기와, 제어회로의 신호를 합성하느 신서사이저와, 상기 신서사이저의 출력을 증폭시켜 송수신부로 전송하는 송수신증폭기로 이루어진 고주파회로를 포함하는 구내 무선전화 시스템에 있어서, 상기 제어회로 및 송수신 증폭기 사이에 연결되어 제어회로의 출력신호에 따라 송수신 증폭기의 바이어스전류를 제어하는 바이어스 조절부를 구비하고, 상기 휴대장치와 고정장치간의 송수신거리가 근접할 경우 송수신 증폭기의 증폭도를 조정하여 주변 고주파회로와의 간섭현상을 억제시키도록 하는 구내 무선전화 시스템.A transceiver for transmitting and receiving a frequency with a portable device, a receiving field sensitivity detector for sensing the frequency intensity of the receiver and transmitting it to a control circuit, a synthesizer for synthesizing a signal of the control circuit, and amplifying the output of the synthesizer and transmitting the signal to the transceiver. A premises wireless telephone system including a high frequency circuit comprising a transceiver for transmitting and receiving, comprising: a bias control unit connected between the control circuit and the transceiver amplifier to control a bias current of the transceiver amplifier according to an output signal of the control circuit, Wireless telephone system in the premises to control the amplification degree of the transmitting and receiving amplifier when the transmission and reception distance between the device and the fixed device is close to suppress interference with the surrounding high frequency circuit. 제1항에 있어서, 상기 제어회로는 수신 전계감도에 따라 출력신호를 달리하여 바이어스 조절부의 합성저항이 변화되도록 한 것을 특징으로 하는 구내 무선전화 시스템.The premises wireless telephone system according to claim 1, wherein the control circuit changes the combined resistance of the bias control unit by varying the output signal according to the received electric field sensitivity. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920006986A 1992-04-24 On-site wireless telephone system KR930022781A (en)

Publications (1)

Publication Number Publication Date
KR930022781A true KR930022781A (en) 1993-11-24

Family

ID=

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010016135A (en) * 2000-11-10 2001-03-05 송형선 Power Control Method for Long-Run Data Transmission Through Phoneline

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010016135A (en) * 2000-11-10 2001-03-05 송형선 Power Control Method for Long-Run Data Transmission Through Phoneline

Similar Documents

Publication Publication Date Title
SE9702272D0 (en) Device in a radio unit
ATE463086T1 (en) FULL DUPLEX TRANSMITTER/RECEIVER WITH DISTRIBUTED DUPLEX FUNCTION
CA2074115A1 (en) Output level control circuit for use in rf transmitter
KR950007323A (en) Wireless communication device
KR890003170A (en) Cordless Telephone Device
ATE505850T1 (en) INTERFERENCE IMMUNITY CONTROL OF A RECEIVER THROUGH LINEARITY CONTROL
KR920001866A (en) Sensitivity switching circuit for radio
KR940020711A (en) ARRANGEMENT FOR DUPLEX TRANSMISSION
CA2220393A1 (en) Data transmission system with a low peak-to-average power ratio based on distorting small amplitude signals
KR910010899A (en) Receiver unit that can respond quickly to multi-path reflection disturbances
US4234959A (en) Dual threshold repeater squelch circuit
KR950022041A (en) Pulse noise canceller in FM tuner
KR930022781A (en) On-site wireless telephone system
KR910019357A (en) Portable Transceiver with Low Voltage Operation Integrated Circuit
KR940701605A (en) Optimal base station selector
KR980006979A (en) Received signal strength detection circuit of mobile communication system
SE9602768L (en) The transmitter-receiver pair
KR0144202B1 (en) Transmitting power control
JPS55161430A (en) Radio communicating system
JPS5784628A (en) Mobile radio device
KR950013423A (en) Blind road guide
JPH0983443A (en) Automatic transmission output controller for infrared ray transmitter-receiver
KR940012996A (en) Wireless telephone system and reception parameter setting method
JPH0244276A (en) Transmission pulse variable type underground impulse radar apparatus
KR970049925A (en) Wireless alarm system and its method according to location