PCS CELL SITE SYSTEM FOR ALLOWING A PLURALITY OF PCS PROVIDERS TO SHARE CELL SITE ANTENNAS

• US 20010012788A1
• Filed: 06/12/1998
• Published: 08/09/2001
• Est. Priority Date: 06/12/1998
• Status: Abandoned Application

• Current Assignee: Gammon R. Keith
• Original Assignee: Gammon R. Keith
• Inventors: GAMMON, R. KEITH
• Application Number:
  US09/096,756
• Publication Number:
  US 20010012788A1
• Time in Patent Office: Days
• US Class Current: 455/562.1
• CPC Class Codes: H01Q 1/246 specially adapted for base stations
• CPC Class Codes: H01Q 21/30 Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
• CPC Class Codes: H04B 1/52 Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
• CPC Class Codes: H04W 16/00 Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
• CPC Class Codes: H04W 16/24 Cell structures

Abstract

A new system for allowing PCS Providers to share cell sites, and more particularly multi-sector antennas, is provided. The present invention utilizes primarily passive, linear components to combine the transmit signals of PCS Providers which reside in non-adjacent frequency bands over a multi-sector antenna and to distribute from a multi-sector antenna the receive signals in all frequency bands of the PCS Providers.

Claims

1. A transceiver system for allowing the communication of a plurality of frequency bands at a Personal Communication Services (PCS) cell site, said transceiver system comprising:

(a) a transmitter system comprising;

(i) a first transmitter adapted to transmit signals in a first transmit frequency band;

(ii) a second transmitter adapted to transmit signals in a second transmit frequency band which is non-adjacent to said first transmit frequency band; and

(iii) a first transmitter network coupled to said first and second transmitters, wherein said transmitter network is adapted to filter said first and second non-adjacent transmit frequency bands;

(b) a receiver system comprising;

(i) a first receiver adapted to receive signals in a first receive frequency band;

(ii) a second receiver adapted to receive signals in a second receive frequency band; and

(iii) a first receiver network coupled to said first and second receivers, wherein said receiver network is adapted to pass said first and second receive frequency bands to said first and second receivers; and

(c) a first transmit/receive antenna coupled to said first transmitter network and said first receiver network, wherein said first transmit/receive antenna is adapted to transmit said first and second non-adjacent transmit frequency bands in a particular direction at a certain beamwidth and receive said first and second receive frequency bands from the same particular direction and beamwidth.

2. The transceiver system of

claim 1

, wherein:

said transmitter system (a) further comprises;

(i) a second transmitter network coupled to said first and second transmitters, wherein said second transmitter network is adapted to filter said first and second non-adjacent transmit frequency bands;

said receiver system (b) further comprises;

(iv) a second receiver network coupled to said first and second receivers, wherein said second receiver network is adapted to pass said first and second receive frequency bands to said first and second receivers; and

the transceiver system further comprises (d) a second transmit/receive antenna coupled to said second transmitter and receiver networks, wherein said second transmit antenna is adapted to transmit said first and second non-adjacent transmit frequency bands and receive said first and second receive frequency bands in a direction different than that of said first transmit/receive antenna.

3. The transceiver system of

claim 1

, wherein said first transmitter network includes a first bandpass filter for filtering signals in said first frequency band and a second bandpass filter for filtering signals in said second frequency band.

4. The transceiver system of

claim 1

, wherein said first transmitter network is adapted to filter signals in said first and second non-adjacent frequency bands selected from the group consisting of:

1930-1945 MHz, 1945-1950 MHz, 1950-1965 MHz, 1965-1970 MHz, 1970-1975 MHz and 1975-1990 MHz; and

wherein said first receiver network is adapted to filter signals in said first and second frequency bands selected from the group consisting of;

1850-1865 MHz, 1865-1870 MHz, 1870-1885 MHz, 1885-1890 MHz, 1890-1895 MHz and 1895-1910 MHz.

5. The transceiver system of

claim 1

, wherein said first antenna is adapted to transmit and receive said first and second non-adjacent frequency bands in the particular direction with a certain beamwidth selected from the group consisting of:

32 degrees, 65 degrees, 90 degrees, 105 degrees and 120 degrees.

6. A transmitter system for allowing the transmission of a plurality of frequency bands at a PCS cell site, said transmitter system comprising:

(a) a first transmitter adapted to transmit signals in a first frequency band;

(b) a second transmitter adapted to transmit signals in a second frequency band which is non-adjacent to said first frequency band;

(c) a first transmitter network coupled to said first and second transmitters, wherein said first transmitter network is adapted to filter said first and second non-adjacent frequency bands; and

(d) a first transmit antenna coupled to said first transmitter network, wherein said first transmit antenna is adapted to transmit said first and second non-adjacent frequency bands in a particular direction at a certain beamwidth.

7. The transmitter system of

claim 6

, further comprising:

(e) a second transmitter network coupled to said first and second transmitters, wherein said second transmitter network is adapted to filter said first and second non-adjacent frequency bands; and

(f) a second transmit antenna coupled to said second transmitter network, wherein said second transmit antenna is adapted to transmit said first and second non-adjacent frequency bands in a direction different than that of said first transmit antenna.

8. The transmitter system of

claim 6

, wherein said first transmitter network includes a first bandpass filter for filtering signals in said first frequency band and a second bandpass filter for filtering signals in said second frequency band.

9. The transmitter network of

claim 6

, wherein said first transmitter network is adapted to filter signals in said first and second non-adjacent frequency bands selected from the group consisting of:

1930-1945 MHz, 1945-1950 MHz, 1950-1965 MHz, 1965-1970 MHz, 1970-1975 MHz and 1975-1990 MHz.

10. The transmitter system of

claim 6

, wherein said first transmit antenna is adapted to transmit said first and second non-adjacent frequency bands in the particular direction with a certain beamwidth selected from the group consisting of:

32 degrees, 65 degrees, 90 degrees, 105 degrees and 120 degrees.

11. A transceiver system for allowing the communication of a plurality of frequency bands at a PCS cell site using one or more transmit and receive multi-sector antennas, said transceiver system comprising:

(a) at least one transmitter network including;

(i) a plurality of bandpass filters, each of said plurality of bandpass filters adapted to pass a frequency band which is non-adjacent to the frequency band which any other bandpass filter is adapted to pass,

(ii) an output line coupled to said plurality of bandpass filters and connectable to a transmit and receive multi-sector antenna, and

(iii) a plurality of input lines each connectable to a transmission equipment adapted to transmit in one of the non-adjacent frequency bands, said plurality of input lines coupled to said plurality of bandpass filters; and

(b) at least one receiver network including;

(i) a bandpass filter adapted to pass signals in a receiver frequency band which includes a plurality of selected non-adjacent frequency bands,

(ii) an amplifier coupled to said bandpass filter,

(iii) a splitter coupled to said amplifier,

(iv) an input line coupled to said bandpass filter and connectable to a transmit and receive multi-sector antenna, and

(v) a plurality of output lines each connectable to a receiver equipment adapted to receive signals in one of said selected frequency bands, said plurality of output lines coupled to said splitter.

12. The transceiver system of

claim 11

, wherein said plurality of bandpass filters of said at least one transmitter network are adapted to filter signals of two or more of said non-adjacent frequency bands selected from the group consisting of:

1930-1945 MHz, 1945-1950 MHz, 1950-1965 MHz, 1965-1970 MHz, 1970-1975 MHz and 1975-1990 MHz; and

wherein said bandpass filter of said at least one receiver network is adapted to filter signals of the receiver frequency band including two or more of said frequency bands selected from the group consisting of;

1850-1865 MHz, 1865-1870 MHz, 1870-1885 MHz, 1885-1890 MHz, 1890-1895 MHz and 1895-1910 MHz.

13. The transceiver system of

claim 11

, wherein said plurality of bandpass filters of said at least one transmitter and receiver network include one or more characteristics selected from the group consisting of:

a maximum insertion loss characteristic of 1.0 dB over each frequency band, a maximum VSWR characteristic of 1.5;

1 over each frequency band, a gain variation characteristic of less than 0.5 dB peak-to-peak over each frequency band, a group delay variation characteristic of less than 90 nsec. over each frequency band, an average power capacity characteristic of 200 Watts, a peak power capacity characteristic of 5000 Watts, a steep roll-off characteristic and a characteristic for handling all modulation types.

14. The transceiver system of

claim 11

, wherein said plurality of input lines of said at least one transmitter network and said plurality of output lines of said at least one receiver network include connectors for connecting to transmission and receiver equipment, respectively.

15. The transceiver system of

claim 11

, wherein said output line of said at least one transmitter network and said input line of said at least one receiver network includes a connector for connecting to the transmit and receive multi-sector antenna.

16. The transceiver system of

claim 11

, wherein said at least one transmitter network include means for built-in-test monitoring.

17. The transceiver system of

claim 11

, where said at least one receiver network include means for built-in-test monitoring.

18. A transmitter network for allowing the transmission of a plurality of frequency bands at a PCS cell site using one or more transmit multi-sector antennas, said transmitter network comprising:

(a) a plurality of bandpass filters, each of said plurality of bandpass filters adapted to pass a frequency band which is non-adjacent to the frequency band which any other bandpass filter is adapted to pass,

(b) an output line coupled to said plurality of bandpass filters and connectable to a transmit multi-sector antenna, and

(c) a plurality of input lines connectable to transmission equipment, said plurality of input lines coupled to said plurality of bandpass filters.

19. The transmitter network of

claim 18

, wherein said plurality of bandpass filters are adapted to filter signals of two or more of said non-adjacent frequency bands selected from the group consisting of:

1930-1945 MHz, 1945-1950 MHz, 1950-1965 MHz, 1965-1970 MHz, 1970-1975 MHz and 1975-1990 MHz.

20. The transmitter network of

claim 18

, wherein first plurality of bandpass filters include one or more characteristics selected from the group consisting of:

a maximum insertion loss characteristic of 1.0 dB over each frequency band, a maximum VSWR characteristic of 1.5;

1 over each frequency band, a gain variation characteristic of less than 0.5 dB peak-to-peak over each frequency band, a group delay variation characteristic of less than 90 nsec. over each frequency band, an average power capacity characteristic of 200 Watts, a peak power capacity characteristic of 5000 Watts, a steep roll-off characteristic and a characteristic for handling all modulation types.

21. The transmitter network of

claim 18

, wherein said plurality of input lines include connectors for connecting to the transmission equipment.

22. The transmitter network of

claim 18

, wherein said output line includes a connector for connecting to the transmit multi-sector antenna.

23. The transmitter network of

claim 18

, further comprising means for built-in-test monitoring.